Midterm Flashcards

1
Q

Compared to the nervous system, the endocrine system ______.

A

may have a longer lasting effect

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2
Q

A hormone is a ____ and the target cell is ______.

A

Molecule that has a metabolic effect on another cell;

A cell that has receptors for specific hormones.

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3
Q

In an ECG pattern, the P wave is caused by ________.

A

The depolarization of atrial muscle fibers

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4
Q

T/F

The great saphenous vein is the longest vein in the body.

A

True

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5
Q

The type of resistance that is acquired as a result of developing a disease is ______.

A

Naturally acquired active immunity

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6
Q

T/F

Kidneys are part of the lymphatic system

A

False

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7
Q

While looking at a sample of blood in a microscope, you see a cell that is markedly larger than a red blood cell. It has a bi-lobed nucleus and is filled with red granules in the cytoplasm. What type of blood cell is this?

A

An eosinophil

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8
Q

Which of the following characteristics of life and their descriptions is correct?

A

Circulation- the movement of substances in body fluids

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9
Q

A primary immune response ____, and a secondary immune response _____.

A

Produces antibodies within five to ten days of exposure to antigens; produces antibodies within a day or two of a subsequent exposure to the same antigen.

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10
Q

Which artery is incorrectly matched to its location?

A

Thyrocervical arteries; Thymus

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11
Q

The lymph nodes of the auxiliary region receive lymph mainly from the ________.

A

Upper limb and mammary gland

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12
Q

The basic event in formation of blood clot is the change of ________.

A

Fibrinogen to fibrin

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13
Q

Drugs used to reduce the tissue rejection following the transplantation of tissue from one person to another

A

Suppress the immune response in the recipient

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14
Q

Systemic circuit

A

Sends oxygen-rich blood to the tissues

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15
Q

The _______ secretes triiodothyronine.

A

Thyroid gland

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16
Q

Exocrine glands differ from endocrine glands in that exocrine glands __________.

A

Secrete through ducts of tubes to the body’s exterior.

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17
Q

The final step in the formation of a blood clot is ___________.

A

Conversion of fibrinogen to fibrin by thrombin

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18
Q

A person with type AB blood can successfully receive blood from ________.

A

All blood types

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19
Q

The antibodies produced in allergic reactions _________.

A

Belong to the immunoglobulin E group

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20
Q

Hormones that the posterior pituitary secretes are synthesized in the _______.

A

Hypothalamus

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21
Q

A person who is stressed usually will have increased _______.

A

Blood pressure

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22
Q

A newborn is protected against certain digestive and respiratory infections by IgA and received via the mother’s _____.

A

milk

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23
Q

After an infection, many dead and fragmented bacteria cells must be filtered from the body. Which of the following cells will clear out the cell debris?

A

Macrophages

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24
Q

A night shift worked experiences extreme difficulty falling asleep due to being exposed to bright lights during both the night and day. The unusual pattern of light exposure is disturbing their ______, which controls the release of the hormone _____.

A

Cardiac rhythm; melatonin

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25
T/F Capillary walls consist of a single layer of epithelial cells and they exchange substances in the blood for substances in the tissue fluid surrounding body cells.
True
26
Kidney disease can cause hypertension by ________.
Activating the renin angiotensin mechanism
27
Target cells for releasing hormones are in the _______.
Anterior pituitary gland
28
From the collecting ducts, lymph enters _____ and becomes part of the ______.
Veins; plasma
29
Which of the following lists best illustrates the idea of increasing levels of complexity?
Organelles, cells, tissues, organs, organ systems
30
The red blood cells of type AB blood have on their surfaces
Antigens A and B
31
The pulmonary circuit
Sends oxygen poor blood to the lungs
32
T/F | Arteries are strong, elastic vessels that carry blood to the heart
False
33
Which of the following has both endocrine and exocrine functions?
Pancreas
34
Doctors suggest that during long periods of sitting, you should flex and extend your feet at the ankles periodically and squeeze your calf muscles to assist with blood circulation. Why would non-exercise muscle contraction affect blood flow and cardiovascular health?
Contraction of the leg muscles squeezes leg veins, which functions as a pumping mechanism to return deoxygenated blood to the heart.
35
Which of the following illustrates a positive feedback mechanism?
Uterine contractions during childbirth
36
Hematocrit is ________.
The percentage of red blood cells in a blood sample
37
T/F | A red blood cell contains a large nucleus; it is thicker near the center and thin around the rim of the cell.
False
38
Which of the following is NOT an example of a negative homeostatic mechanism in the human body?
Retention of fluid leading to retention of more fluid
39
The removal of wastes produced by metabolic reaction is _____.
Excretion
40
Circulation is vital because it __________.
Supplies oxygen and nutrients to and removes wastes from tissues
41
T/F Inmate defenses include mechanical and chemical barriers, whereas adaptive defenses counter specific disease-causing agents.
True
42
T/F | Lymphatic capillaries are thin walled closed ended tubules
True
43
What are pathogens?
Disease causing agents
44
Erythroblastosis fetalis may occur in
A second Rh-positive fetus developing in an Rh-negative woman
45
When a person’s pulse is taken by palpating near the thumb on the wrist, which artery is felt?
Radial artery
46
Which of the following layers of the heart and their functions are correctly matched?
Myocardium- cardiac muscles tissue that pumps blood out of the heart chambers
47
T/F | Cardiac output is calculated by multiplying the stroke volume by the systolic blood pressure
True
48
The celiac artery provides blood to the _______.
Liver and spleen
49
The blood pressure in the large systemic arteries is greatest during ______.
Ventricular systole
50
The correct sequence of parts that carry cardiac impulses is
SA node, AV node, AV bundle, Purkinje fibers
51
Which of the following correctly matched the valve to its function?
Mitral valve- permits one way blood flow from the left atrium to the left ventricle
52
Positive feedback mechanisms
Move conditions away from the normal state
53
Atrial natriuretic peptide is a hormone that
Inhibits the release of renin and aldosterone
54
Which of the following is the correct sequence of parts through which blood moves from the vena cava to the lungs?
Right atrium, tricuspid valve, right ventricle, pulmonary valve
55
While looking at a sample of blood in a microscope, you see a purple-stained cell that is markedly larger than a red blood cell (about two to three times larger). It has a large kidney shaped nucleus. What type of blood cell is this?
A monocyte
56
The hormone that stimulates calcium deposition into bone is _____.
Calcitonin.
57
T/F | As a result of the allergen antibody reaction, mast cells release histamine
True
58
The thymus gland secretes hormones called ______ that ________.
Thymosins ; control production and differentiation of white blood cells
59
Secretions that affect only nearby cells are termed
Paracrine
60
Which of the following usually accounts for the smallest percentage of leukocytes in a blood sample?
Basophils
61
Blood from the face and scalp is drained by the ______.
External jugular vein
62
B cells divide and differentiate into _____, which produce and secrete antibodies.
Plasma cells
63
T/F Blood flow through a capillary is controlled by a precapillary sphincter, which opens or closes due to the requirements of the cells supplies by the capillary.
True
64
The right atrium receives blood directly from _______.
the superior vena cava, inferior vena cava, coronary sinus
65
A hormone that the adrenal medulla secretes is
Epinephrine
66
Which of the following are agranulocytes?
Monocytes
67
T/F A hormones is secreted molecule that is carried in the bloodstream to where it acts on target cells that bear specific receptors for that hormone.
True
68
The normal pacemaker of the heart is the _______.
sinoatrial node
69
The spleen _________.
Resembles a large lymph node divided into lobules.
70
In all organisms, the basic unit of structure and function is ________.
The cell
71
Which type of blood vessel holds the greatest volume of blood?
Vein
72
T lymphocytes are responsible for
Cell mediated immunity
73
T/F | Persons with type AB blood are sometimes called universal donors
False
74
Anatomy and physiology are difficult to separate because ________.
Physiological functions depend on anatomical structures
75
The loose fitting sac around the heart is the _______.
Fibrous pericardium