Vital Signs

Question 1

Medium vessels are more muscular and are able to constrict to maintain

Answer 1

Homeostasis (temperature, vascular demand during exertion)

Question 2

What is Poiseulle’s law?

Answer 2

Resistance is related to tube length, the diameter and blood viscosity

Question 3

What is pulse pressure?

Answer 3

Systolic minus diastolic, it measures stress on small arteries

Question 4

Why do capillaries have the lowest velocity?

Answer 4

Because there is more of them, biggest radius to allow for greater exchange

Question 5

What is mean arterial pressure (MAP) measuring?

Answer 5

Average pressure on arteries during the entire cardiac cycle

Question 6

If there is an increase in HR there will be what effect to MAP

Answer 6

increased

Question 7

A compliant vessel is able to stretch in response to what?

Answer 7

Increased pressure

Question 8

Baroreceptors monitor BP with what arteries?

Answer 8

Carotid Sinus and Aortic Arch

Question 9

Chemoreceptors monitor what?

Answer 9

CO2 levels and pH

Question 10

If baroreceptors sense low stretch what will occur to blood pressure

Answer 10

Increase in blood pressure, caused by an increase in Cardiac Output and increased peripheral vascular resistance

Question 11

Atherosclerosis decreases vascular bed diameter which will increase what?

Answer 11

Afterload

Question 12

What is the role of afferent and efferent flow through the glomerulus?

Answer 12

Maintain GFR (glomerular filtration rate)