Cardiovascular System Ch. 13 Flashcards

0
Q

pericardium

A

loose-fitting sac around the heart

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1
Q

pathway of blood through heart from vena cava to the lungs

A

right atrium - tricuspid valve - right ventricle - pulmonary valve

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2
Q

skeleton of the heart includes these

A

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

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3
Q

heart valves that close when the ventricles contract

A

bicuspid and tricuspid valves

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4
Q

Sequence of cardiac impulses

A

SA node - AV node - AV bundle - Purkinje fibers

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5
Q

heart structure with self-exciting tissue

A

SA node

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6
Q

branches of the aorta

A

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.

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7
Q

nerve fibers cause the heart rate to decrease

A

parasympathetic

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8
Q

blood vessel serves as blood reservoir

A

veins

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9
Q

vein that drains blood from face and scalp

A

external jugular vein

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10
Q

Starling’s law

A

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

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11
Q

When is blood pressure greatest in the systemic arteries?

A

ventricular systole

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12
Q

P wave of EKG

A

depolarization of atria

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13
Q

why do plasma proteins remain in blood capillaries

A

maintain osmotic pressure of the blood

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14
Q

Artrial natriuretic factor

A

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

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15
Q

Angina pectoris

A

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

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16
Q

T wave on EKG

A

repolarization of ventricles

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17
Q

nerve fibers cause the heart rate to increase

A

sympathetic

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18
Q

what vessel of the heart has relatively low oxygen content

A

pulmonary artery

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19
Q

bradycardia

A

slow heart rate

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20
Q

atherosclerosis

A

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

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21
Q

filtration

A

blood molecules forced through the vessel walls due to hydrostatic pressure

22
Q

SA node

A

the pacemaker of the heart

23
Q

location of venules

A

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

24
Q

veins function as reservoirs under what conditions

A

when blood pressure drops

25
Q

location of bicuspid valve

A

Between the left atrium and the left ventricle

26
Q

coronary arteries

A

arteries that supply blood to the heart

27
Q

where does blood go when the left ventricle contracts

A

to the entire body via the aorta

28
Q

arteries found near the brim of the pelvis from the aorta

A

common iliac arteries

29
Q

ventricle with thicker muscle wall

A

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

32
Q

pericardial cavity

A

the potential space between the parietal and visceral pericardial membranes

33
Q

QRS complex on EKG

A

depolarization of the ventricles

33
Q

location of the semilunar valves

A

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

33
Q

how is blood supplied to the myocardium

A

coronary arteries

34
Q

blood vessels thin enough to allow exchange of gases

A

capillaries

35
Q

what drains the blood from the wall of the heart

A

coronary sinus

36
Q

full pathway of blood through heart

A

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

37
Q

largest artery in the systemic circuit

A

aorta

38
Q

atrial systole

A

atria contract - ventricles relax at same time

39
Q

bradycardia

A

slow heart beat fewer than 60 beats per minute

40
Q

Angina pectoris

A

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

41
Q

vessel that carries blood to the left atria

A

pulmonary veins

42
Q

chamber of heart that receives blood from the vena cava

A

right atrium

43
Q

vessel that carries blood to the lungs from the right ventricle

A

pulmonary arteries

44
Q

Pericarditis

A

inflammation around the heart membranes

45
Q

great saphenous vein

A

longest vein in the body

46
Q

Purkinje fibers

A

distribution of electricity to papillary muscles of the venticles

47
Q

chamber that receives blood from the lungs

A

left atrium

48
Q

Endocarditis

A

inflammation of the mitral valve of the heart

50
Q

Atrial diastole

A

ventricular contraction and atrial relaxing at same time

51
Q

ECG

A

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

52
Q

tachycardia

A

fast heart rate more than 100 beats per minute

53
Q

SA node

A

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

53
Q

Heart attack

A

myocardial infarction