Anatomy and Physiology 2 Exam 2

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42 Terms

1

Damage to this part of the brain would cause the body to have less control over cardiac activity?

medulla oblongata

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2

Intercalated discs include these structures

gap junctions, desmosomes, interdigitating folds

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3

The cardiac conduction system includes all of the following except

the tendinous cords

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4

To get from the right atrium to the right ventricle, blood flows through the

tricuspid valve

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5

Which of the following are NOT one of the three variables that govern stroke volume?

pulse

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6

A heart rate at 45 bpm and an absence of P waves suggest

damage to the SA node

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7

The ventricles contract during

the QRS complex

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8

Cardiac muscle does NOT exhibit tetanus because it has

a long absolute refractory period

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9

What is it called when your resting hear rate is below 60 bpm

bradycardia

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10

In an EKG, the P wave represents this

depolarization of the atria

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11

Venous return would be increased by this

increased skeletal muscle activity

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12

high blood pressure is called

hypertension

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13

Friction between the blood and vessel wall has this effect

causes peripheral resistance

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14

This artery supplies blood to the stomach, liver, and spleen

celiac trunk

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15

Blood often flows into a capillary bed from

the metateriole

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16

This type of capillary has no gaps between endothelial cells, is less permeable to large molecules and exists in muscle and nervous tissue

continuous capillary

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17

Which is the correct circulatory route

heart, arteries, capillaries, veins, heart

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18

Blood from the arms, shoulders, and head passes through this vessel in order to return blood to the heart

superior vena cava

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19

Peripheral resistance, opposition to blood flow away from the heart, depends on the following variables except?

blood pH

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20

What is the vasodilator that widens the blood vessels and speeds the flow of the blood to an injured tissue?

histamine

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21

The ___ system consists of a network of vessels that penetrate nearly every tissue of the body, and a collection of tissues and organs that produce immune cells

lymphatic

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22

These are functions of the lymphatic system except

regulates body temperature

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23

The respiratory burst is used by ___ to kill bacteria

neutrophils

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24

Which of the following results from a lack of self-tolerance

systemic lupus erythematousus

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25

__ are the most numerous lymphatic organs; over 400 in adults

lymph nodes

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26

Where are the inguinal lymph nodes located

groin

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27

The only lymphatic organ with both afferent and efferent lymphatic vessels is __?

lymph nodes

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28

Which of the following is NOT a secondary lymphatic organ?

thymus

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29

These mature in the thymus and depend on thymic hormones

T cells

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30

What is the body’s largest lymphatic organ?

spleen

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31

What type of vein cannot vasconstrict?

venous sinuses

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32

What three variables is blood pressure determined by?

cardiac output, blood volume, resistance to flow

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33

What is it called when your resting heart rate is above 100 bpm?

tachycardia

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34

What are the three variables that govern stroke volume?

preload, contractility, afterload

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35

What is the function of the antidiuretic hormone?

promotes water retention and raises blood pressure

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36

What is ONE of the three primary causes of edema?

increased capillary filtration

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37

What are the secondary lymphatic organs?

lymph nodes, tonsils, and spleen

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38

Where are the axillary lymph nodes located?

armpits

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39

What is the body’s largest lymphatic organ?

spleen

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40

What is the body’s primary agent of tissue cleanup and repair?

monocytes

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41

Which hypersensitivity is a reaction to another persons transplanted tissue?

alloimmunity

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42

What are the most common ways HIV is transmitted?

sexual intercourse, contaminated blood products, and contaminated needles

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