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Exam 3 BIO > Exam 3 > Flashcards

Exam 3 Flashcards

(69 cards)

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1
Q

The primary source of red blood cells in the adult human being is the yellow bone marrow?

True or False

A

False

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2
Q

The human heart lies posterior to the verbal column and anterior to the sternum.

True or False

A

False

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3
Q

The sinoatrial node depolarizes only when it receives a signal from the
atrioventricular node.

True or False

A

False

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4
Q

The process of fibrinolysis breaking up blood clots when healing has occurred.

True or False

A

True

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5
Q

Bicarbonate ion in the blood is formed from waste CO2 dissolved in the blood plasma.
True or False

A

True

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6
Q

Depolarization of the SA node by the sympathetic nervous system will decrease heat rate?

True or False

A

False

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7
Q

The ventricles are the first chambers to receive blood returning to the heart?

True or False

A

False

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8
Q

Pulmonary veins carry oxygenated blood

True or False

A

True

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9
Q

The blood leaves the heart via arteries

True or False

A

True

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10
Q

Hyperpolarization of the SA node by the parasympathetic NS will decrease heat rate

True or False

A

True

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11
Q

When the pressure in the left ventricular is greater than the aortic pressure, the aortic semilunar valve open

True or False

A

True

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12
Q

The left subclavian artery branches off the aorta

True or False

A

True

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13
Q

The muscular layer of a blood vessel is the tunica media

True or False

A

True

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14
Q

The erythrocyte graveyard is the appendix

True or False

A

False

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15
Q

Venous valves are similar in structure to the atrioventricular valves of the heart

True or False

A

False

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16
Q

All four of the valves of the heart are connected to chordae tendineae

True or False

A

False

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17
Q

Hemoglobin binds oxygen most efficiently when the partial pressure (concentration) of oxygen is low

A

False

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18
Q

The normal hematocrit will show a higher percentage of erythrocytes than plasma.

True or False

A

False

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19
Q

Platelets can form plugs that seal small breaks in blood vessels

True or False

A

True

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20
Q

Small muscle masses attached to the chordae tendineae are the

papillary muscles
trabecular carneae
tunica musclularis
pectinate muscles

A

A. papillary muscles

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21
Q

Autorhythmic myocardial cells can generate action potentials spontaneously because they have if channels in their cell membrane

A

Cause a net influx of Na+

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22
Q

Blood is carried to capillaries in the myocardium by way of:
the coronary sinus
coronary veins
the fossa ovals
coronary arteries

A

Coronary arteries

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23
Q

The EDV will always be greater than ESV because

A

The EDV is the volume before contraction and the ESV is the volume after contraction

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24
Q

The tricuspid valve is closed

when the ventricle is in systole
while the atrium is in systole
by movement of blood from the atrium to ventricle
while the ventricle is in diastole

A

when the ventricle is in systole

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25
Which of the following are involved in pulmonary circulation?
right ventricle, pulmonary artery, and left atrium
26
Blood within the pulmonary veins returns to the right ventricle right atrium left ventricle lungs left atrium
Left atrium
27
In order for blood to fill the heart All of the answers are correct the atria must be in diastole the AV valves must open the pressure in the atria must be lower than the veins the ventricles must be in diastole
All of the answers are correct
28
Which of the following veins does not send blood directly to the right atrium? Inferior vena cava superior vena cava pulmonary vein coronary sinus
Pulmonary vein
29
Select the correct statement about the heart valves
The AV valves are supported by the chordae tendinaea so that regurgitation of blood into the atria during ventricular contraction does not occur
30
Permitting the exchange of nutrients and gases between the blood and tissue cells is the primary function of arterioles capillaries venules veins arteries
Capillaries
31
The double walled sac enclosing the heart is the echocardium myocardium endocardium pericardium
Pericardium
32
Which of the following is not part of the conduction system of the heart AV valve Intermodal pathway SA node Purkinje fibers AV node
AV valve
33
Calculate the stroke volume given an EDV of 150 ml and an ESV of 70 ml
80ml
34
Calculate the cardiac output given a stroke volume of 60 ml/beat and a heart rate of 70 beats/minute
4200 ml/minute
35
Match the description to the plasma component Albumin Transferrin Globulins Fibrinogen
Albumin- Responsible for maintaining osmotic pressure Transferrin- Carries iron to the blood Globulins- Produced by humoral immunity Fibrinogen- Required for coagulation
36
Together leukocytes and platelets comprise which percentage of whole blood volume? 45% 55% 10% <1%
<1%
37
The percentage of blood producing tissues that become white blood cells is about___% 25 75 50 10
75
38
The erythrocyte count increases after a while when an individual goes from low to high altitude because:
The concentration of oxygen and/or total atmospheric pressure is lower at high altitudes
39
Hypoxia stimulates_____ to produce____
Kidneys/ erythropoietin
40
_______ regulates the growth and maturation of megakaryocytes. None of the answers are correct Thrombopoietin Interleukin Erythropoietin Colony-stimulating factor
Thrombopoietin
41
No visible cytoplasmic granules are present in eosinophils basophils neutrophils monocytes
Monocytes
42
_____ are a group of diseases characterized by the abnormal growth and development if white blood cells, and _____ are diseases where patients have too few white blood cells.
Leukemias, leukopenias
43
Monocytes leave the circulation to go into the tissues where they are called macrophages neutrophils eosinophils basophils lymphocytes
macrophages
44
The function of red blood cells is
carry oxygen form the lungs to the body cells
45
Match the description to the formed elements Erythrocyte Neutrophil Eosinophil Monocyte Platelets
Erythrocyte- Shaped as a biconcave disc Neutrophil- Most abundant white blood cell Eosinophil-Kills parasitic worms; complex r Monocyte- Large phagocytic cells found in Platelets- Composed of cytoplasmic fragments
46
Which best describes arteries?
all carry blood away from the heart
47
Baroreceptors that monitor MAP are located in the
carotid artery and aorta
48
Venous return of blood to the heart relies heavily upon Diastolic blood pressure Skeletal muscle contraction Systolic blood pressure Venous Valve 2 or 3 of these factors
Two of these factors
49
The circulatory route that runs from the digestive tract to the liver is called pulmonary circulation cereal circulation hepatic portal circulation coronary circulation
Hepatic portal circulation
50
Increase blood volume_______ blood pressure Decreases Has no effect on increases
Increases
51
Which of the choices reflects the balance between the direction and amount of fluid that flows across the capillary walls?
Hydrostatic and osmotic pressure
52
A lack of protein in the diet characteristics of malnutrition would result in a
decrease in colloid osmotic pressure in the capillaries
53
Smooth muscle is present in the walls of arteries only all vessel types veins only muscular arteries only all vessel types except capillaries
All vessel types except capillaries
54
Looking at cross-section of the aorta, you would expect to see
a thin band of dense elastic connective tissue and a thick band of smooth muscle?
55
Which of the following is not true regarding fenestrated capillaries? -Fenestrated capillaries are essential for filtration of blood plasma in the kidney -Fenestrated capillaries in the small intestine receive nutrients from digested food -Fenestrated capillaries in endocrine organs allow hormones rapid entry into the blood -Fenestrated capillaries are more permeable to fluids than continuous capillaries -Fenestrated capillaries form the blood-brain barrier
Fenestrated capillaries form the blood-brain barrier
56
Which of the following is not one of the three main factors influencing blood pressure? Blood volume cardiac output peripheral resistance emotional state
Emotional state
57
When an individual is at rest, most of the blood volume is located in the capillaries systemic veins and venules arteries and arterioles pulmonary veins and venues
systemic veins and venules
58
The pulse pressure is______
systolic pressure minus diastolic presssure
59
The second branch off the aortic arch of the human heart is the Left subclavian artery brachiocephalic artery left common carotid artery pulmonary artery
Left common carotid artery
60
If an individual has a systolic pressure of 140 mm/Hg and a diastolic pressure of 80 mmHg, what is their MAP?
100mmHg
61
Match the lymphoid structure with the description -Primary lymphoid organ, source of all blood cells -Secondary organ, located along lymph vessels -Mucosa associated lymphoid tissue, located in the pharynx -Primarily lymphoid organ, site of T cell maturation -Mucosa associated lymphoid tissue, located in the distal section of the small intestine
-Red bone marrow -Lymph nodes -Tonsils -Thymus -Peyer's patches
62
The correct order for movement of lymph collected from the tissues is
capillaries-collecting vessels-trunks-ducts
63
Compared to veins, lymphatic collecting vessels have More valves Thinner walls All three characteristics listed More branching Two of the characteristics listed
All three characteristics listed
64
Which of the following does not play a role in lymph transport? -Skeletal muscle contractions -Contraction of nearby arteries -Blood pressure -Smooth muscle in the vessel walls -All four contribute to transport
Blood pressure
65
An increase in blood pressure due to water retention would result in a
increase in hydrostatic pressure in the capillaries
66
If channels that allow for a net influx of Na+ are found in the cell membrane of
Autorhythmic myocardial cells
67
If the length of the refractory period in cardiac muscle cells was the same as it is for skeletal muscle cells_____
Tetanic contractions might occur, which would stop the heart's pumping action
68
Which of the following might be used as treatment for a heart or stroke? Thrombin Fibrinogen Calcium Fibrin Tissue plasminogen activator
Tissue plasminogen activator
69
Immobility of bed patients can cause intravascular clotting because of blood stasis in the legs. The condition is called
Femoral thrombosis

Exam 3 BIO (4 decks)

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