Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

A&P 2 > Heart and cardiovascular function > Flashcards

Heart and cardiovascular function Flashcards

1
Q

the visceral pericardium

A

epicardium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

cardiac muscle, blood vessels, and nerves.

A

myocardium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

an internal layer of simple squamous cells that provide a smooth continuous surface. Also lines blood vessels and we call it endothelium.
same lining from heart to vessel
the smooth helps free of turbulence

A

endocardium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Located just behind the sternum and slightly to the left.

Roughly the size of a fist.

Sits in a sac of fluid called the pericardial sac.

A

Pericardial Cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

the portion of the membrane that is touching the heart (the fluid filled sack)
prevent swelling, sack like structure with fluid acts as a lubricant

A

Visceral Pericardium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

reduces friction

A

pericardial fluid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

separates right and left ventricle

A

anterior interventricular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

short branching vessel

A

trunk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

supplying tissue with nutrients and oxygen

these branch

A

coronary arteries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Blood that flows through the heart doesn’t supply it with nutrients and oxygen

A

coronary circulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

anterior interventricular artery. Aka left anterior descending artery.
front of the heart and between 2 ventricles

A

left coronary artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

posterior interventricular artery

A

right coronary artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

circles around the posterior – becomes coronary sinus (large venous structure of posterior side of heart) this becomes coronary sinus

A

great cardiac vein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

all blood from tissue comes back and then goes back to right atrium

A

coronary sinus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Receives blood from the superior and inferior vena cava as well as the coronary sinus.

Relatively smooth surface
Tricuspid valve

Fossa ovalis

Blood flows past the tricuspid valve aka AV valve into the right ventricle.

A

right atrium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

connective tissue fibers that prevent the valve from opening in the opposite direction.

A

Chordae tendineae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

chordae’s are attached to valve to make sure blood flows in one direction
when it slams shut, it keeps blood from going in a different direction

A

papillary muscles

18
Q

muscular ridges

A

trabeculae carneae

19
Q

contraction, pressure rises in the chambers and blood is ejected.

A

systole

20
Q

relaxation, pressure falls and the chambers fill with blood

A

diastole

21
Q

relaxation of ventricle – filling with blood

changes to accommodate blood as it comes in – it changes volume

A

ventricular diastole

22
Q

shoots blood into ventricle quickly and bumps into wall and expands the wall

A

artrial systole

contraction of atria

23
Q

types of hormones that affect heart rate

A

epinephrine, norepinephrine, thyroid hormone.

24
Q

amount of filling happening in ventricle

A

preload

25
Q

ability for heart to contract

A

contractility

26
Q

force heart has to generate to move the blood

A

afterload

27
Q

amount of blood in each ventricle at the end of diastole.

A

end diastolic volume

28
Q

amount of blood in each ventricle at the end of systole

A

end systolic volume

29
Q

total measureable output from our heart

A

cardiac output

30
Q

depoloarization of the atria.

A

p wave

31
Q

ventricular depolarization. Also atrial repolarization.

A

QRS complex

32
Q

repolarization of ventricles

A

T wave

33
Q

Blood flow is affected by….

A

Pressure – increase in pressure = increase in flow

Resistance – increase in resistance = decrease in flow

34
Q

force that blood exerts on the walls of the vessels

A

BP

35
Q

combined effects of vascular resistance, viscosity, and turbulence.

A

resistance

36
Q

vascular resistance is due to….

A

Vessel length – increase in length = increased resistance because of friction.
Vessel diameter – increase in diameter = decreased resistance.

37
Q

maintains flow through capillary beds so it must be high enough to overcome vascular resistance

A

arterial pressure

38
Q

difference between systolic and diastolic pressure

A

pulse pressure

39
Q

calculated by adding 1/3 pulse pressure to diastolic pressure.

You can think of this as an average overall pressure.

For someone with a BP of 120/90 the MAP would be 100mm/hg.

90 + (30/3) = 90+10 = 100mm/hg

A

mean arterial pressure

40
Q

occurs more rapidly if the distance to travel is short, concentration gradient is large, smaller substances.

A

diffusion

41
Q

occur as a result of pressure differences and osmosis.

A

filtration and reabsorption

42
Q

most important process that move substances across capillary wall

A

diffusion, filtration, reabsorption

A&P 2 (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions