Final Exam Lecture 1

Question 1

3 Main Functions of Circulatory System

Answer 1

Transport nutrients, waste products, hormones

Question 2

Vascular Resistance determines?

Answer 2

Blood Flow

Question 3

If Vascular Resistance in decreased, what happens to blood flow?

Answer 3

Increased blood flow

Question 4

If Vascular Resistance is Increased, what happens to blood flow?

Answer 4

Blood Flow is decreased

Question 5

True or False: Vascular resistance is inverse to blood flow

Answer 5

True

Question 6

If Vascular Conductance is increased, what happens to blood flow?

Answer 6

Easier to drive blood flow

Question 7

If Vascular Conductance is decreased, what happens to blood flow?

Answer 7

Harder to drive flow

Question 8

What does the brain use to drive blood flow?

Answer 8

CPP

Question 9

84% of the blood of the circulatory system is located where?

Answer 9

Venous System

Question 10

Where is 7% of the CV system blood located?

Answer 10

Heart

Question 11

Where is 13% of the CV system blood located?

Answer 11

Arteries

Question 12

Describe System in Parallel, per lecture

Answer 12

Decreased blood flow resistance, as it has more pathways for blood to flow

Question 13

Describe System in Series, per lecture
*What do you do with the pressures

Answer 13

Increased blood flow resistance, as only 2 blood vessels; you combine the pressures from each tube

Question 14

What is the Aorta’s Internal Diameter?
*Describe blood flow and velocity

Answer 14

2.5 cm*
Easier blood flow and increased velocity

Question 15

What are the Small Arteries internal diameter?

Answer 15

20 cm

Question 16

What are the capillaries internal diameter, all combined?
*Describe blood flow and velocity

Answer 16

2500 cm
*Harder blood flow and decreased velocity

Question 17

The closer you get to the heart, what happens to the cross-sectional area

Answer 17

Decrease cross-sectional area in cm squared

Question 18

What is Velocity of Blood flow equal to?

Answer 18

Blood Flow/ Cross Sectional Area

Question 19

The Further you are from the heart, what happens to pressures?

Answer 19

More decreased pressures

Question 20

Which has higher pressures: L atria or L ventricle/aorta?

Answer 20

Higher: L Ventricle and Aorta

Question 21

Which 2 vessels determine blood pressure?

Answer 21

Small arteries and arterioles

Question 22

What is the pressure in the R atria, per lecture

Answer 22

Around 10 mmHg

Question 23

Pressure high or low above the chokepoint, between 2 areas?

Answer 23

Higher

Question 24

Pressure high or low below the chokepoint

Answer 24

Low

Question 25

Describe Laminar Flow
*Is this desired? Why?

Answer 25

How blood show flow with no turbulent movements
*desired b/c efficient and no problems

Question 26

In Blood flow, what increases resistance?

Answer 26

Arteriole Walls

Question 27

Describe Turbulent Flow
*What 2 Things can get stuck
*What can cause Turbulent Flow? Describe the Post-Blood Flow

Answer 27

Disorderly movement when blood is pushed all around the vessel and causes remodeling
*Cholesterol and Ca++ can get stuck
*Clot can cause it and the post blood flow sprays everywhere

Question 28

What % of Blood Flow does the Kidney Get? L/min?
*Do they need this much bloodflow?

Answer 28

20-22% of blood Flow = 1L/min
*Does not need this much; one of few organs that has more blood flow than actually needs

Question 29

What is a normal Abdominal Aorta BP, per lecture

Answer 29

100 mmHg

Question 30

What is a normal renal Vascular Resistance?

Answer 30

0.1 mm/mL/min

Question 31

Formula for resistence

Answer 31

R = Delta P/F

Question 32

Increased Resistance = ? conductance

Answer 32

Decreased Conductance

Question 33

Decreased Resistance = ?Conductance

Answer 33

Increased conductance

Question 34

Resistance and Conductance are _ proportional to one another?

Answer 34

Inversely