Cardiovascular System Ch. 13

Question 0

pericardium

Answer 0

loose-fitting sac around the heart

Question 1

pathway of blood through heart from vena cava to the lungs

Answer 1

right atrium - tricuspid valve - right ventricle - pulmonary valve

Question 2

skeleton of the heart includes these

Answer 2

fibrous connective tissue that surrounds the valves and in the interventricular septum

Question 3

heart valves that close when the ventricles contract

Answer 3

bicuspid and tricuspid valves

Question 4

Sequence of cardiac impulses

Answer 4

SA node - AV node - AV bundle - Purkinje fibers

Question 5

heart structure with self-exciting tissue

Answer 5

SA node

Question 6

branches of the aorta

Answer 6

aortic sinus - brachiocephalic artery - common carotid artery - subclavian artery - thoracic aorta - abdominal aorta - celiac artery - superior, inferior, and mesenteric arteries - suprarenal arteries - renal arteries - gonadal arteries - common iliac arteries
*The Pulmonary artery is not a branch of the aorta.

Question 7

nerve fibers cause the heart rate to decrease

Answer 7

parasympathetic

Question 8

blood vessel serves as blood reservoir

Answer 8

veins

Question 9

vein that drains blood from face and scalp

Answer 9

external jugular vein

Question 10

Starling’s law

Answer 10

the greater the length of the myocardial fibers the greater the force as they contract

Question 11

When is blood pressure greatest in the systemic arteries?

Answer 11

ventricular systole

Question 12

P wave of EKG

Answer 12

depolarization of atria

Question 13

why do plasma proteins remain in blood capillaries

Answer 13

maintain osmotic pressure of the blood

Question 14

Artrial natriuretic factor

Answer 14

inhibits renin, angiotensin, and aldosterone and is released by heart in its atrium

Question 15

Angina pectoris

Answer 15

pain caused by obstruction or narrowing of an artery on outside of heart

Question 16

T wave on EKG

Answer 16

repolarization of ventricles

Question 17

nerve fibers cause the heart rate to increase

Answer 17

sympathetic

Question 18

what vessel of the heart has relatively low oxygen content

Answer 18

pulmonary artery

Question 19

bradycardia

Answer 19

slow heart rate

Question 20

atherosclerosis

Answer 20

fatty materials on artery walls - increased by fatty diet, high blood pressure
*Use diet of Unsaturated fats to combat it

Question 21

filtration

Answer 21

blood molecules forced through the vessel walls due to hydrostatic pressure

Question 22

SA node

Answer 22

the pacemaker of the heart

Question 23

location of venules

Answer 23

they continue from the capillaries to form veins which carry blood back to the atria of the heart

Question 24

veins function as reservoirs under what conditions

Answer 24

when blood pressure drops

Question 25

location of bicuspid valve

Answer 25

Between the left atrium and the left ventricle

Question 26

coronary arteries

Answer 26

arteries that supply blood to the heart

Question 27

where does blood go when the left ventricle contracts

Answer 27

to the entire body via the aorta

Question 28

arteries found near the brim of the pelvis from the aorta

Answer 28

common iliac arteries

Question 29

ventricle with thicker muscle wall

Answer 29

left ventricle because it functions to pump blood up out of heart to the entire body

Question 32

pericardial cavity

Answer 32

the potential space between the parietal and visceral pericardial membranes

Question 33

QRS complex on EKG

Answer 33

depolarization of the ventricles

Question 33

location of the semilunar valves

Answer 33

function to close the ventricles of the heart after ventricles have emptied and are resting

Question 33

how is blood supplied to the myocardium

Answer 33

coronary arteries

Question 34

blood vessels thin enough to allow exchange of gases

Answer 34

capillaries

Question 35

what drains the blood from the wall of the heart

Answer 35

coronary sinus

Question 36

full pathway of blood through heart

Answer 36

vena cava - right atrium - tricuspid valve - right ventricle - pulmonary valve - pulmonary artery - lungs - pulmonary vein - left atrium - mitral valve - left ventricle

Question 37

largest artery in the systemic circuit

Answer 37

aorta

Question 38

atrial systole

Answer 38

atria contract - ventricles relax at same time

Question 39

bradycardia

Answer 39

slow heart beat fewer than 60 beats per minute

Question 40

Angina pectoris

Answer 40

ischemia of the heart due to blockage or narrowing of a coronary artery

Question 41

vessel that carries blood to the left atria

Answer 41

pulmonary veins

Question 42

chamber of heart that receives blood from the vena cava

Answer 42

right atrium

Question 43

vessel that carries blood to the lungs from the right ventricle

Answer 43

pulmonary arteries

Question 44

Pericarditis

Answer 44

inflammation around the heart membranes

Question 45

great saphenous vein

Answer 45

longest vein in the body

Question 46

Purkinje fibers

Answer 46

distribution of electricity to papillary muscles of the venticles

Question 47

chamber that receives blood from the lungs

Answer 47

left atrium

Question 48

Endocarditis

Answer 48

inflammation of the mitral valve of the heart

Question 50

Atrial diastole

Answer 50

ventricular contraction and atrial relaxing at same time

Question 51

ECG

Answer 51

electrocardiogram is a recording of the electrical changes in the myocardium during a cardiac cycle

Question 52

tachycardia

Answer 52

fast heart rate more than 100 beats per minute

Question 53

SA node

Answer 53

the nodal cells initiate cardiac impulses that stimulate cardiac muscle fibers to contract - the pacemaker of the heart

Question 53

Heart attack

Answer 53

myocardial infarction