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Physiology 1- Circulatory System- Blood: DVM > Physiology 1 > Flashcards

Flashcards in Physiology 1 Deck (94)
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1

What are the three components of the cardiovascular system?

The heart, blood, blood vessels

2

What serves as the transport medium within which materials being transported are dissolved or suspended?

Blood

3

What are the five main functions of the cardiovascular system?

1. Distribute O2 and nutrients throughout body
2. Transport CO2 and metabolic waste products
3. Distribute water, electrolytes, and hormones throughout body
4. Contribute to infrastructure of immune system
5. Thermoregulation

4

What is the pump for the body?

The heart

5

Atrial natriuretic peptide (ANP) does what?

Lowers blood pressure by increasing urine production, thus reducing blood volume

6

___________ function as the passageways through which blood is directed and distributed.

Blood vessels

7

Vascular endothelial cells are found where?

Lining the inner surface of blood vessels

8

________ and ________ are two important endothelial vasodilators.

Nitric oxide and prostacyclin

9

________ and __________ are two important endothelial vasoconstrictors.

Endothelin and thromboxane A2

10

The heart's main function is a pump. Its second function is an _________?

Endocrine organ

11

When atrial blood pressure is increased, what is released?

Atrial natriuretic peptide (ANP)

12

The two main circuits of the cardiovascular system are: ________ and ___________.

Systemic circulation and pulmonary circulation

13

The rate blood is pumped from each ventricle: __________.

Cardiac output

14

The rate blood is returned to the atria from the vein: ______.

Venus return

15

What is the definition of stroke volume?

The volume of blood pumped out of each ventricle with each contraction of the heart

16

The pressure in the artery when no blood is being ejected from the left ventricle: __________.

Diastolic pressure

17

The lowest arterial pressure measured during a cardiac cycle is ____________.

Diastolic pressure

18

Pulse pressure is ___________.

The difference between systolic and diastolic pressure

19

The __________________ reflects the volume of blood pumped from the left ventricle in a single beat.

Magnitude of the pulse pressure

20

The volume in the ventricle before ejection is called what?

End-diastolic volume or preload

21

The volume in the ventricle after ejection is called what?

End-systolic volume

22

What circuit of the cardiovascular system pumps blood of all organs?

Systemic circulation

23

The pulmonary circulation circuit consists of the _________, __________, ___________, and __________.

Right heart, pulmonary arteries, veins, and capillaries

24

Systemic circulation is what type of circulation?

High pressue

25

What circulatory circuit utilizes of the left heart, systemic arteries, capillaries, and veins?

Systemic circulation

26

Pulmonary circulation pumps blood to the _________ via __________.

Lungs, low pressure circulation

27

The period of cardiac contraction and emptying is known as ____________.

Systole

28

Systolic pressure is the ___________ arterial pressure measured during a cardiac cycle.

Highest

29

The pressure in the artery after blood has been ejected from the left ventricle is _____________.

Systolic pressure

30

Diastole is the period of cardiac _________ and __________.

Relaxation and filling