Lab 3 157

Question 1

Ventricles

Answer 1

-thick walled chambers
-discharge blood
-good pumps

Question 2

Right ventricle

Answer 2

Pumps deoxygenated blood into pulmonary trunk

Question 3

Left ventricle

Answer 3

Pumps oxygenated blood into the aorta

Question 4

Atria

Answer 4

-chambers that receive blood
-thin floppy walls (auricles)
-interatrial septum divides right and left

Question 5

Right atrium

Answer 5

Received oxygen poor blood from the body

Question 6

Left atrium

Answer 6

Receives oxygen rich blood from the lungs

Question 7

Chordae tendinae

Answer 7

Heart strings
-chords of collagen

Question 8

3 layers of heart tissue

Answer 8

1) pericardium (outer)
2)myocardium (middle)
3)endocardium (inner)

Question 9

Does the blood inside the heart chambers provide oxygen to heart muscles

Answer 9

No

Question 10

Where does the functional blood supply for the heart come from

Answer 10

Left and right coronary arteries

Question 11

What drains the heart muscle

Answer 11

Great, middle and small cardiac veins

Question 12

First “lubb” sound

Answer 12

Closure of AV valves at start of ventricular systole

Question 13

Second “dub” sound

Answer 13

Closure of semilunar valves at the start of ventricular diastole

Question 14

Murmurs

Answer 14

Abnormal heart sounds

Question 15

Blood pressure

Answer 15

The pressure exerted by blood against blood vessel walls

Question 16

Normal BP

Answer 16

120/80mm Hg

Question 17

Pulse pressure

Answer 17

Systolic pressure-diastolic pressure

Question 18

MAP

Answer 18

Mean arterial pressure

Question 19

Diastolic BP+1/3 pulse press=

Answer 19

MAP

Question 20

Average resting pulse

Answer 20

70-80 bpm