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Biology 202 > Cardiovascular System > Flashcards

Cardiovascular System Flashcards

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1
Q

External structure that lies between the ventricles of the heart is the posterior and anterior interventricular sulcus. True or False

A

True

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2
Q

Pulmonary circuit transport deoxygenated blood from the heart to the lungs
True or false

A

True

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3
Q

Systemic circuit transports deoxygenated blood from the heart to tissues.
True or false

A

True

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4
Q

Happens on ECG before atria contracts

A

P wave

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5
Q

What structure initiates atrial depolarization?

A

SA node

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6
Q

What causes the QRS complex?

A

Ventricular depolarization
Atrial depolarization

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7
Q

Stroke volume equation

A

EDV-ESV

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8
Q

What is it called when the resistance the left ventricle has to overcome to pump out blood?

A

Afterload

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9
Q

Ejection fraction

A

EDV-ESV/EDV

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10
Q

Where does blood enter in the right side of the heart?

A

Superior vena Cava, inferior vena cava, vena Cava

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11
Q

After the Vena cava blood goes to

A

Right atria

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12
Q

After the right atria blood goes to

A

Right ventricle

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13
Q

After the pulmonary arteries blood goes to

A

Pulmonary veins

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14
Q

Connections between cell membranes that allow ions to move between cells, thus transmitting signals

A

Gap junctions

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15
Q

What muscle prevents prolapse of av valve

A

Papillary muscle

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16
Q

Toward the heart carries deoxygenated blood

A

Vein

17
Q

Carries oxygenated blood away from the heart

A

Arteries

18
Q

Pulmonary arteries carry deoxygenated blood away from the heart and to the lungs. True or false

A

True

19
Q

Pathway of a signal through the cardiac conduction system

A

SA node-av node- bundle of his- bundle branches- purkinje fibers

20
Q

Systole is what

A

Contraction

21
Q

Diastole is what

A

Relaxation

22
Q

What causes the’ lub’ sound?

A

AV valve closing

23
Q

What causes the ‘dub’ sound

A

Semilunar valve closes

24
Q

The force of blood returning to the heart (venous return) or____ is influenced by ____

A

Preload; skeletal muscle contractions

25
Q

What is vasoconstriction

A

Decreasing flow

26
Q

Which phase has pressure building ventricles when all valves are closed

A

Isouolumetric relaxation

27
Q

What is cardiac output equation

A

CO=HR x SV

28
Q

What is stroke volume equation?

A

SV= EDV-ESV

29
Q

What is the equation for blood flow,

A

Q= AP/R

30
Q

What is the mean arterial pressure equation?

A

MAP=CO X R

31
Q

What is the equation for resistance?

A

R= 8nL/pi r^4

32
Q

1L = 1000mL
True or false

A

True

Biology 202 (2 decks)

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