Wk 5 - LE 10: Cardiovascular (concepts in physiology)

Question 1

Haemodynamics is …

Answer 1

the mechanics of blood motion mainly relating to pressure, resistance and flow

Question 2

The mechanics of blood motion mainly relating to pressure, resistance and flow is called …?

Answer 2

Haemodynamics

Question 3

Cardiac output relates to ____

Answer 3

flow

Question 4

Mean arterial pressure (MAP) relates to ____

Answer 4

pressure

Question 5

Total peripheral resistance (TPR) is related to ____

Answer 5

Resistance

Question 6

The average MAP is around …

Answer 6

little less than 100 mm Hg

Question 7

Blood flowing from the left side of the heart is _____ blood going to _____

Answer 7

arterial (to body)

Question 8

Blood flowing from the right side of the heart is _____ blood going to _____

Answer 8

arterial (to lungs)

Question 9

Does the pulmonary circuit lie in parallel or series?

Answer 9

in series (flows from one to the next)

Question 10

Why is the pulmonary circuit lie in series?

Answer 10

To ensure that ALL blood goes through the lungs to get oxygenated in one direction

Question 11

From the aorta, the blood vessels go from in ______ to ______ to ensure all organs can receive blood

Answer 11

in series to parallel

Question 12

What would happen if all organs received from in series?

Answer 12

Organs downstream would receive blood that is less oxygen rich

Question 13

What is the only organ that receive CO2 rich blood from another organ?

Answer 13

The liver

Question 14

Is the flow of blood through the systemic circuit greater, less or equal to the blood of the pulmonary circuit?

Answer 14

It is equal

Question 15

Is blood leaving the right and left side of the heart equal?

Answer 15

Yes

Question 16

The flow of blood through the venous vessels is often called…?

Answer 16

Venous return

Question 17

The right heart pumps blood to the ______

Answer 17

lungs

Question 18

The left heart pumps blood to the ______

Answer 18

body

Question 19

The lungs receive about ____% of the total CO

Answer 19

20%

Question 20

Blood flow to kidneys and gastrointestinal regions _____ during exercise

Answer 20

falls

Question 21

Does the blood flow to the brain increase, decrease or remain constant during exercise?

Answer 21

Constant

Question 22

Blood flow = _______ / _______

Answer 22

Q = change in pressure / resistance (Q=ΔP/R)

Question 23

What does Q symbolise?

Answer 23

Blood flow

Question 24

If you increase resistance (restrict vessel), flow will _____

Answer 24

reduce

Question 25

If you decrease resistance (dilate vessel), flow will ____

Answer 25

increase

Question 26

What is the average blood flow in L/min?

Answer 26

5.0 L/min

Question 27

ΔP is roughly equal to ….?

Answer 27

MAP

Question 28

What is the average venous pressure?

Answer 28

5 mm Hg

Question 29

What is the average arterial pressure?

Answer 29

100 mm Hg

Question 30

TPR is the sum of …(3)

Answer 30

1. Arterial resistance
2. capillary resistance
3. Venous resistance