Chapter 7 - Cardiovascular System

Question 1

What are the atrioventricular valves?

Answer 1

LAB RAT

Left Atrium: Bicuspid

Right Atrium: Tricuspid

Question 2

What is the valve that separates the R ventricle from the pulmonary circulation?

Answer 2

Pulmonary valve

Question 3

What is the order of electric conduction in the heart?

Answer 3

SA > AV> bundle of His> purkinje fibers

Question 4

What are the two phases of a heart beat?

Answer 4

Systole: contraction (AV valves close)

Diastole: relaxation (SN valves close)
- blood from atria fills ventricles

Question 5

How do we measure cardiac output?

Answer 5

CO = HR x SV

SV is the stroke volume:
= volume of blood pumped per beat

Question 6

Draw out the blood flow image through the heart

Answer 6

Figure 7.5

Question 7

What is hematocrit?

Answer 7

Measurement of how much sample is composed of RBCs

Question 8

Universal blood type donor

Answer 8

Type O

Question 9

What are the Rh factors?

Answer 9

You either have it or done

Either + or -

Positive is dominant allele !

Question 10

What effect does exercise, c02, and ph, and temp have on Bohr shift?

Answer 10

During exercise:

• c02 increased
• H+ decreased
• temp increased

***they shift the model to the right

Question 11

What is the primary site of resistance in the vascular system

Answer 11

Artérioles….more so than capillaries !