Introduction to the CVS

Question 1

What drives blood flow?

Answer 1

Pressure difference drives blood flow

Question 2

Why is the cardiovascular system needed?

Answer 2

• Temperature Regulation
• Pump blood through lungs and carry oxygen
• Transport nutrients to muscles and organs
• Circulates hormones and immune mediators
• Connection to lymphatic system
• Human reproduction
• Connection to the nervous system

Question 3

Pressure in aorta?

Answer 3

> 100mmHg

Question 4

Pressure in large veins?

Answer 4

5-10mmHg

Question 5

What is the typical resting blood pressure?

Answer 5

120/80 mmHg

Question 6

Cardiac output equation

Answer 6

Cardiac output=heart ratex stroke volume

Question 7

How to find maximum heart rate? (typically)

Answer 7

220-Age= maximum heart rate

Question 7

Time needed to diffuse =

Answer 7

proportional to distance squared

Question 8

Relationship between resistance and blood flow

Answer 8

Blood flow is inversely proportional to resistance of blood vessel

Question 9

Relationship between blood flow and pressure

Answer 9

Blood flow is proportional to pressure across blood vessel

Question 10

Blood flow equation

Answer 10

Blood flow = (Pa-Pv) / resistance

Question 11

Blood velocity equation

Answer 11

Blood flow
____________
Total cross sectional area

Question 12

What % of volume do systemic veins and venules hold?

Answer 12

65%