LESSON 3 Flashcards
(171 cards)
1
Q
What is the circulatory system responsible for? (6)
A
(1) it is responsible for transporting throughout the body oxygenated blood from the heart and lungs via the arteries. Then the oxygen-depleted blood is returned to its origin through the veins.
(2) it delivers the oxygen and nutrients to all cells in the human body.
(3) transports carbon dioxide and other wastes to the other organs of the body and away from the cells
(4) it helps in the coagulation process
(5) regulates body temperature
(6) assists the body in fighting diseases.
2
Q
The circulatory system is made up of two main components:
A
(1) the cardiovascular system
(2) the lymphatic system
3
Q
The cardiovascular system is composed of (3)
A
(1) the heart
(2) blood vessels
(3) blood
4
Q
The lymphatic system is made up of the:
A
(1) lymph
(2) lymph nodes
(3) vessels
5
Q
The heart is a hollow muscular organ that has four chambers:
A
(1) left atrium
(2) right atrium
(3) left ventricle
(4) right ventricle
6
Q
The heart is surrounded by a thin, fluid-filled sac called:
A
pericardium
7
Q
A human heart is about the same size as that of a:
A
Person’s clenched fist.
8
Q
Layers of the Heart (3)
A
- Epicardium
- Myocardium
- Endocardium
9
Q
DESCRIPTION: thin, watery membrane on the outer layer of the heart
A
Epicardium
10
Q
DESCRIPTION: thick layer of cardiac muscles in the middle layer of the heart
A
Myocardium
11
Q
DESCRIPTION: thin layer of epithelial cells in the inner layer of the heart
A
Endocardium
12
Q
FUNCTION: covers the heart and is attached to the pericardium
A
Epicardium
13
Q
FUNCTION: pumps blood into the arteries by contracting
A
Myocardium
14
Q
FUNCTION: lines the valves and interior chambers
A
Endocardium
15
Q
Chambers of the Heart (4)
A
- Right Atrium
- Right Ventricle
- Left Atrium
- Left Ventricle
16
Q
DESCRIPTION: upper right chamber
A
Right Atrium
17
Q
DESCRIPTION: lower right chamber
A
Right Ventricle
18
Q
DESCRIPTION: upper left chamber
A
Left Atrium
19
Q
DEFINITION: lower left chamber
A
Left Ventricle
20
Q
Function: receives deoxygenated blood from the body
A
Right atrium
21
Q
Function: receives the blood from the right atrium and pumps it into the pulmonary artery
A
Right ventricle
22
Q
Function: receives oxygenated blood from the lungs and pumps it into the left ventricle
A
Left atrium
23
Q
Function: receives blood from the left atrium and pumps it into the aorta
A
Left ventricle
24
Q
Valves of the Heart (4)
A
Right AV valve
Left AV valve
Right semilunar valve
Left semilunar valve
25
DESCRIPTION: tricuspid valve located between the right atrium and the right ventricle
Right AV valve
26
DESCRIPTION: bicuspid or mitral valve located between the lef atrium and the left ventricle
Left AV valve
27
DESCRIPTION: pulmonary or pulmonic valve located at the entrance of the pulmonary artery
Right semilunar valve
28
DESCRIPTION: aortic valve located at the entrance of the aorta
Left semilunar valve
29
Function: closes as the right ventricle contracts preventing blood from flowing back to the right atrium
Right AV Valve
30
Function: closes as the left ventricle contracts preventing blood from flowing back to the left atrium
Left AV Valve
31
Function: closes when the right ventricle relaxes preventing blood from flowing back to the right ventricle
Right semilunar valve
32
Function: closes when the left ventricle relaxes preventing blood from flowing back to the left ventricle
Left semilunar valve
33
What are the Septa (2)
1. Interatrial septum
2. Interventicular septum
34
DESCRIPTION: partition that separates the right from the left
atria
Interatrial septum
35
DESCRIPTION: separates the right and the left ventricles
Interventicular septum
36
What is this called?
The heart receives blood supply through the left and right coronary arteries, and the coronary veins return the oxygen-depleted blood from the heart muscle back to the heart.
The coronary circulation
37
This supplies the blood as well as provides drainage to the tissues.
The coronary circulation
38
The coronary circulation is composed of (3)
left and right coronary arteries and coronary veins.
39
Poor circulation could lead to
ischemia
40
Ischemia is caused by
(1) inadequate supply of oxygen
(2) myocardial infarction or heart attack which may be due to complete obstruction of the coronary artery.
41
DESCRIPTION: Systole (contraction) and diastole (relaxation) which lasts about 0.8 seconds
Cardiac Cycle
42
DESCRIPTION: Sends electric impulses throughout the myocardium which is initiated by the sinoatrial (SA) node (pacemaker)
Electrical Conduction System
43
DESCRIPTION: Provides the graphical representation of the cardiac cycle's activity
Electrocardiogram (ECG)
44
DESCRIPTION: "Lubb" which is the first sound as the ventricles contract or the AV valves close and "dupp" or the second sound which is heard when the semilunar valves close and the ventricles relax.
Origin of Heart Sounds
45
DESCRIPTION: The average heart rate is 72 beats per minute (bpm) and the cardiac output refers to the volume of blood pumped per minute
Heart Rate and Cardiac Output
46
DESCRIPTION: A rhythmic throbbing resulting from the alternating expansion and contraction of the artery
Pulse
47
DESCRIPTION: The force exerted by the blood on the walls of the vessel measured by the sphygmomanometer; the difference between the systolic (pressure during contraction) and diastolic (pressure during relaxation)
Blood Pressure
48
The human heart may have disorders that can be detected and addressed.
(6)
1. Angina pectoris
2. Aortic stenosis
3. Bacterial endocarditis
4. Congestive heart failure
5. Myocardial infarction
6. Pericarditis
49
List of diagnostic tests for heart disorders: (13)
(1) Aspartate aminotransferase (AST) or serum glutamic-oxaloacetic transaminase (SGOT)
(2) Arterial blood gases (ABG)
(3) Cholesterol
(4) Creatine kinase (CK)
(5) Creatine kinase (CK)-MB
(6) Digoxin
(7) Electrocardiogram (ECG or EKG)
(8) Lactate dehydrogenase (LDH) isoenzymes
(9) Microbial cultures
(10) Myoglobin
(11) Potassium (K)
(12) Triglycerides
(13) Troponin T (TnT)
50
The ____ is the loop consisting of a network of blood vessels through which blood is circulated to the rest of the body.
Vascular system
51
What are the two divisions of the vascular system?
the pulmonary circulation and the systemic circulation
52
This moves the blood between the right ventrice of the heart to the lungs.
The pulmonary circulation
53
During the process, oxygen is absorbed and carbon dioxide is released, after which, the oxygenated blood flows back to the left atrium of the heart. Which circulation is this?
The pulmonary circulation
54
This moves the oxygenated blood and nutrients from the left ventricle of the heart to the rest of the body.
The systemic circulation
55
The deoxygenated blood with carbon dioxide and wastes flows back to the right atrium.
Which circulation is this?
The systematic circulation
56
Structure of the Vascular System (5)
a. Arteries
b. Arterioles
c. Veins
d. Venules
e. Capillaries
57
Thick-walled blood vessels that carry oxygen-rich blood from the heart to the tissues of the body
Arteries
58
Small-diameter blood vessels that branch out from the arteries and lead to the capillaries
Arterioles
59
Tubes with thin walls that carry deoxygenated blood from tissues to the heart
Veins
60
Very small veins that collect blood from the capillaries
Venules
61
Fine hair-like blood vessels that connect arterioles and veins
Capillaries
62
Blood Vessel Structure (3)
a. Layers
b. Lumen
c. Valves
63
the blood vessels have three layers:
(1) tunica adventitia (outer connective tissue)
(2) tunica media (middle, muscle and elastic fiber)
(3) tunica intima (inner, endothelial cell).
64
The space inside the blood vessel where the blood flows.
Lumen
65
Found in the veins, these are thin membranous leaflets that prevent the backflow of blood.
Valves
66
The pathway for the blood flow of the human body consists of (3)
(1) arteries
(2) veins
(3) capillaries
67
These allow the transport of oxygen and nutrients to the cells of the body and also make it possible to remove carbon dioxide and other waste materials of metabolism.
(1) arteries
(2) veins
(3) capillaries
68
Disorders of the Vascular System(10)
1. Aneurysm
2. Arteriosclerosis
3. Atherosclerosis
4. Embolism
5. Embolus
6. Hemorrhoids
7. Phlebitis
8. Thrombophlebitis
9. Thrombus
10. Varicose veins
69
Diagnostic Tests in Vascular System (6)
(1) D-dimer
(2) Fibrin degradation products (FDP)
(3) Lipoproteins
(4) Prothrombin time (PT)
(5) Partial thromboplastin time (PTT/APTT)
(6) Triglycerides
70
DISORDER: enlargement of the artery due to the weakening of the artery wall
Aneurysm
71
DISORDER: hardening of the artery wall due to aging
Arteriosclerosis
72
DISORDER: formation of plaques in the inner walls
Atherosclerosis
73
DISORDER: clot or bubble that causes obstruction of an artery
Embolism
74
DISORDER: obstruction that is carried and lodged in a vessel
Embolus
75
DISORDER: swollen veins in the area of the anus
Hemorrhoids
76
DISORDER: inflammation of the veins particularly the wall
Phlebitis
77
DISORDER: swelling of the veins of the legs that usually occurs during pregnancy
Thrombophlebitis
78
DISORDER: blood clot that impedes blood flow
Thrombus
79
DISORDER: usually found in the legs, these are veins that have been twisted and enlarged
Varicose veins
80
It is the red fluid that is transported throughout the body via the circulatory system.
Blood
81
What are the two types of blood?
(1) Arterial blood
(2) Venous blood
82
BLOOD: oxygen and nutrients are carried to the tissues
(1) Arterial blood
83
BLOOD: carbon dioxide and metabolic by-products are carried to the lungs and kidneys for removal from the body.
Venous blood
84
It is a clear, straw-colored liquid portion of the blood which is 90% water.
Plasma
85
Plasma contains gases:
(O2, CO2, N), minerals (Na, K, Ca, Mg), carbs and lipids, proteins, etc.
86
The human blood is composed of:
(1) plasma
(2) other formed elements.
87
The formed elements are:
(1) cells
(2) cell remnants
(3) cell fragments found in the human blood.
88
In the human blood, there are three types of cells:
1. Erythrocytes (red blood cells)
2. Leukocytes (white blood cells)
3. Thrombocytes (platelets)
89
This carry O2 and CO2 and are produced in the bone marrow.
Erythrocytes (red blood cells)
90
Is formed in the marrow and the lymphatic tissue. They neutralize pathogens. The two types are granulocytes and agranulocytes.
Leukocytes (white blood cells)
91
Are pieces of very large cells in the bone marrow that help form blood clots.
Thrombocytes (platelets)
92
The human blood type is inherited and determined by the ____ on the surface of the red blood cells.
antigens
93
The blood contains or can develop _____ directed at the opposite blood type.
Antibodies
94
Blood type match is important especially during blood transfusion because the wrong type could _____ the red blood cells.
Agglutinate
95
When a doctor mentions blood type, he/she is referring to a person's—
ABO blood group system or Rhesus (Rh) factor
96
This is a system of classifying human blood by the presence of antigens A and B and based on the antigenic components found on the surface of the red blood cells.
ABO Blood Group System
97
ABO Blood Group system of classification is of primary importance in obstetrics because of the?
Hemolytic disease of the newborn (HDN).
98
This is necessary to determine the compatibility of the donor’s blood with the recipient’s blood because an individual who does not produce the D antigen will produce anti-D which could be fatal if it encounters the D antigen.
Cross matching
99
There are three blood specimens that are collected for testing purposes:
(1) serum
(2) plasma
(3) whole blood.
100
It is the fluid part of the blood that is left after clotting because it does not have fibrinogen. This can be separated by centrifugation.
Serum
101
This refers to the fluid portion that is separated by centrifugation from the red blood cells, white blood cells, and platelets. It has fibrinogen and could be collected using an anticoagulant tube. It is also collected in cases where serum could not be used.
Plasma
102
It is the same as blood in the bloodstream and it should neither clot nor separate. Just like plasma, it could be collected using the anticoagulant tube and must be mixed for a minimum of 2 minutes prior to testing.
The whole blood
103
Blood Disorders (8)
1. Anemia
2. Leukemia
3. Urinary tract infection
4. Leukocytosis
5. Leukopenia
6. Polycythemia
7. Thrombocytosis
8. Thrombocytopenia
104
BLOOD DISORDERS: caused by not having enough healthy red blood cells or hemoglobin
Anemia
105
BLOOD DISORDERS: cancer of the blood; the formation of abnormal tissues or cells in the bone marrow or the lymphatic system
Leukemia
106
BLOOD DISORDERS: shown by high number of leukocytes
Urinary tract infection
107
BLOOD DISORDERS: increased number of white blood cells in the blood
due to illness or infection
Leukocytosis
108
BLOOD DISORDERS: reduced number of white cells in the blood
Leukopenia
109
BLOOD DISORDERS: the marrow produces too many red blood cells resulting in the thickening of blood
Polycythemia
110
BLOOD DISORDERS: the body produces too many platelets (thrombocytes) which affect the blood clotting
Thrombocytosis
111
BLOOD DISORDERS: characterized by low platelet count
Thrombocytopenia
112
Diagnostic Tests for Blood (15)
• ABO and RH type
• Bone marrow examination
. Complete blood count (CBC)
. Cross-matching
• Differential (diff) count
• Eosinophil (Eos) count
•Erythrocyte sedimentation rate (ESR)
• Ferritin
• Hematocrit (Hct)
• Hemoglobin (Hb or Hgb)
• Hemogram
• Indices (MCH, MCV, MCHC)
• Iron (Fe)
• Reticulocyte (retic) count
• Total iron-binding capacity (TIBC)
113
It is a network of tissues and organs responsible for the removal of toxins and waste in the human body.
The lymphatic system
114
What is the primary function of the lymphatic system?
Its primary function is to transport the white blood cells to and from the lymph nodes throughout the body
115
The lymphatic system is composed of?
fluids or lymph which is similar to plasma but is composed of 95% water.
116
The lymph is transported throughout the system through the (3)
lymphatic vessels, ducts, and masses of lymph tissue called nodes.
117
The body's excess tissue fluid filters into ____ which join larger lymphatic vessels until they empty into either the right lymphatic duct or the thoracic duct.
lymphatic capillaries
118
The ___ moves through the vessels with the help of skeletal muscle contraction. It passes through the lymph nodes, which produce _____, before it reaches the duct.
lymph
lymphocytes
119
The lymphatic system has other functions: (4)
1. It transports the tissue fluids back into the bloodstream.
2. It removes impurities.
3. It processes lymphocytes.
4. It transports the fats absorbed from the small intestine into the bloodstream.
120
It is an excess tissue fluid that filters through the lymphatic capillaries.
The lymph
121
The lymph is moved as a result of ______.
skeletal muscle contraction
122
Disorders of the Lymphatic System
1. Lymphangitis
2. Lymphadenitis
3. Lymphadenopathy
4. Splenomegaly
5. Hodgkin's disease
6. Lymphosarcoma
7. Lymphoma
123
It is an inflammation of lymphatic channels resulting from an infection at a site distal to the channel
Lymphangitis
124
It refers to the inflammation of the lymph nodes
Lymphadenitis
125
It is also called adenopathy, a disease in which there is abnormality in the size or number of lymph nodes
Lymphadenopathy
126
It is the enlargement of the spleen
Splenomegaly
127
It is the cancer that affects the immune system and is characterized by enlarged lymph nodes
Hodgkin's disease
128
It is a type of cancer that develops from lymphocytes
Lymphosarcoma
129
It is the cancer of the lymphatic system that begins in the lymphocytes
Lymphoma
130
[Lymphocytes] Diagnostic Tests
• Bone marrow biopsy
• Complete blood count
• Culture and sensitivity
• Lymph node biopsy
• Mononucleosis test
131
It is the stoppage of bleeding as a response to an injury whether it be normal vasoconstriction where the vessel walls close temporarily, abnormal obstruction like plaque, or coagulation such as litigation.
Hemostasis
132
A type of response to an injury where the vessel walls close temporarily
Normal vasoconstriction
133
It is a type of response to an injury like plaque, or coagulation such as litigation.
Abnormal obstruction
134
It requires coordination between the endothelial cells lining the blood vessels, platelets, and other blood cells, and the plasma proteins.
Hemostasis
135
HEMOSTASIS:
There are four interrelated responses:
1. Vasoconstriction
2. Formation of the primary platelet plug
3. Progression to the stable blood clot
4. Fibrinolysis or dissolving of clot
136
It is when the vessel walls are constricted after an injury, which results in reduced flow of blood in the site of injury
Vasoconstriction
137
It is when platelets stick together on the site of the injury forming a plug
Formation of the primary platelet plug
138
It is the process in which the blood change from a liquid state into a gel that forms the blood clot
Coagulation or clotting
139
It refers to the proteins that are needed in the coagulation.
The coagulation factors
140
(COAGULATION FACTORS) There are three types:
1. enzyme precursors that turn into enzymes when activated
2. cofactors that accelerate enzymatic reactions
3. and substrates which are the substances that are acted on and changed by the enzymes.
141
The clotting cascade has two separate but interacting pathways which are?
1. the extrinsic pathway which is activated by external trauma (initiates coagulation)
2. the intrinsic pathway which is activated by trauma inside the bloodstream (produces thrombin).
142
(Clotting cascade) It has three cell-based coagulation phases.
1. initiation
2. amplification
3. propagation
143
It is an enzyme that plays an important role in coagulation.
Thrombin
144
Thrombin is produced at—
The site of injury from the prothrombin.
145
It amplifies coagulation and converts fibrinogen into soluble fibrin.
Thrombin
146
This support the platelet plug formation by activating factor XIII to cross-link fibrin and also to control the formation and coagulation process by activating protein C.
Thrombin
147
It is the process in which the fibrin is dissolved.
Fibrinolysis
148
(Fibrinolysis) It has two main activities:
1. reopens intact vessels by dissolving clots
2. removes hemostatic clots from the tissue as part of the healing process
149
The liver's role in hemostasis is to:
synthesize coagulation factors
1. V
2. VIII
3. prothrombin
4. fibrinogen
150
This organ produces heparin and bile salts needed for synthesis. It is also responsible for the production of bile salts needed for vitamin K absorption.
Liver
151
Hemostatic Disorders: (4)
1. Deep venous thrombosis (DVT)
2. Disseminated intravascular coagulation
3. Hemophilia
4. Thrombocytopenia
152
It happens when blood clot forms in one or more deep veins, usually in the legs.
Deep venous thrombosis (DVT)
153
It occurs when the formation of small clots blocks the small blood vessels.
Disseminated intravascular coagulation
154
It is a disorder involving the lack of sufficient blood-clotting proteins.
Hemophilia
155
It is a condition characterized by abnormally low levels of platelets in the blood.
Thrombocytopenia
156
HEMOSTATIC: Diagnostic Tests (7)
1. Bleeding time
2. D-dimer
3. Factor assays
4. Fibrin degradation products
(FDP)
5. Platelet function assay (PFA)
6. Prothrombin time (PT)
7. Partial thromboplastin time
(PTT or APTT)
157
It is the triangular area on the anterior of the elbow, which is a site of major veins.
Antecubital fossa, also called the elbow pit.
158
This is the first choice for routine venipuncture because there are several major arm veins called antecubital veins which are close to the surface which makes them easy to locate and penetrate.
Antecubital fossa, also called the elbow pit.
159
It refers to a vein arrangement that occurs in about 70% of the population.
H-shaped antecubital veins
160
It is the preferred venipuncture site. It is the easiest to access and least painful for the patient.
Median cubital vein
161
It is the second choice for venipuncture. It is harder to palpate but is usually better when drawing blood from an obese patient.
Cephalic vein
162
It is last choice-vein for venipuncture as it is not well anchored and punctures on this vein are more painful.
Basilic vein
163
These are the intermediate antebrachial veins, which include the median, median cephalic, and median basilic veins.
M-shaped antecubital veins
164
It is intermediate antebrachial vein; first-choice vein safest and less painful
Median vein
165
It is the intermediate cephalic vein; second choi. for venipuncture; less likely to roll
Median cephalic vein
166
It is the intermediate basilic vein; last choice veil because it is more painful
Median basilic vein
167
It is used if the antecubital veins are not accessible.
Other arm and hand veins are used
168
The veins at the back of the hand that can be used are smaller, so using them may be—
very painful
169
Take note that the _____ is never used as a venipuncture sile.
under side of the wrist
170
Leg, ankle, and foot veins must not be used in venipuncture without the permission of a physician due to complications such as—
thrombosis
171
Arteries are not used for routine blood collection and are limited to the collection of_______. Special training is needed and the procedure is risky for the patient.
arterial blood gas
