Test 3(Ch.5,12-14,17)

Question 1

The bundle that receives a signal from the SA node and initiates depolarization of the left atria

Answer 1

Bachman’s bundle

Question 2

Another term for _______ is frank starling mechanism.

Answer 2

preload

Question 3

Chest leads are also called ________ leads.

Answer 3

precordial

Question 4

The _______ arteries supply the myocardium with blood.

Answer 4

coronary

Question 5

These are the sites for gas exchange to occur at the skeletal muscle.

Answer 5

Capillaries

Question 6

55% of your blood is ______.

Answer 6

plasma

Question 7

The vena cava returns oxygen poor blood to the ______ ______.

Answer 7

right atria

Question 8

Normal hematocrit level for females is ___.

Answer 8

42`

Question 9

Baroreceptors will lower HR when they sense a _____ pressure.

Answer 9

high

Question 10

Blood is ___% of your body weight.

Answer 10

8%

Question 11

Once blood leaves the capillaries, it flows into the _______.

Answer 11

Venules

Question 12

Cor pulmonale is associated with ______ heart failure.

Answer 12

right

Question 13

Receptors located in the aortic arch and carotid bodies.

Answer 13

Baroreceptors

Question 14

Red blood cells last __-__ days.

Answer 14

90-120

Question 15

Composition of blood: Plasma and formed elements

Answer 15

Plasma-55%

Formed elements-45%

Question 16

Functions of blood are to:
Transport \_\_\_\_\_\_ to tissue cells. 
Transport \_\_\_\_\_\_\_ and waste products. 
Transport \_\_\_\_\_\_\_ \_\_\_\_\_\_\_ from one part of the body to another. 
Transport regulatory hormones and \_\_\_\_\_\_\_\_.
Regulate the pH and \_\_\_\_\_\_\_.
\_\_\_\_\_\_\_ body temperature.
Protect against \_\_\_\_\_\_\_ \_\_\_\_\_\_.
Form \_\_\_\_\_.

Answer 16

Oxygen
Nutrients
Processed molecules
Enzymes
Osmosis
Maintain
Foreign substance
Clots

Question 17

Primary function of RBCs is to transport oxygen from the _____ to the tissues and transport carbon dioxide from the tissue to the _____.

Answer 17

Lungs

Question 18

What is Hematocrit value for adult male?

Answer 18

Male-45%

Question 19

Monocytes are __________ WBCs.

They are the largest WBCs and they ________ bacteria, dead cells, cell fragments, and viral infected cells.

Answer 19

Agranulocytes

Phagocytize

Question 20

The heart is enclosed in the ________ and _______.

Answer 20

Mediastinum

Pericardium

Question 21

3 layers of heart

Answer 21

Epicardium
Myocardium
Endocardium

Question 22

Blood vessels that play a major role in the distribution and regulation of blood pressure.

Answer 22

Arterioles

Question 23

Formula for MABP.

Answer 23

(SBP + (2×DBP))÷3

Question 24

What is total peripheral resistance? How is it calculated and why is it important?

Answer 24

MAP/CO

Question 25

Ventricular _______ is defined as the force against which the ventricles must work to pump blood.

Answer 25

afterload

Question 26

4 specific properties of cardiac cells

Answer 26

.Automaticity, excitability, conductivity, and contractility

Question 27

Remember the intercalated discs? We talked about them in ex phys. We talked about them in CP. Might make a good topic for extra credit. Look up some info on them.

Answer 27

.

Question 28

Bachman’s bundle is located on inner wall of the ______ ______.

Answer 28

left atrium

Question 29

What leads make up Einthoven’s triangle?

Answer 29

I, II, and III

Question 30

QRS rate for V Tach?

Answer 30

100-170 bpm

Question 31

What are the limb leads?

Answer 31

I, II, III, aVL, aVF, aVR

Question 32

3 functions of pericardium

Answer 32

Protect heart Anchor heart to surrounding structures Prevent heart from overfilling.

Question 33

Normal MABP ranges.

Answer 33

80-100 mmHg