Bio 202 Quiz 3 Study Guide

Front 1

Alternating surges of pressure in an artery that occur with each contraction and relaxation of the left ventricle

Back 1

pulse

Front 2

Often referred to as the pacemaker of the heart because it sets the rate of depolarization for the heart as a whole.

Back 2

sinoatrial node

Front 3

This wave indicates depolarization of the atria just before atrial contraction.

Back 3

P wave

Front 4

A heat rate over 100 bpm

Back 4

Tachycardia

Front 5

When a “blood pressure cuff” is placed around the arm and in- flated to a pressure higher than the systolic pressure, circula- tion to the forearm is occluded. As this pressure is released, characteristic sounds are heard, which indicate the resumption of blood to the forearm. What are these sounds called?

Back 5

Sounds of Korotokoff

Front 6

A double walled fibrous sac that encloses the heart

Back 6

Pericardium

Front 7

The graphic recording of the electrical charges occurring during the cardiac cycle is called a/an ____________?

Back 7

ECG

Front 8

The apex of the heart is located at the ______________ and is in line with the middle region of the left clavicle.

Back 8

5th intercostal space

Front 9

The length of a normal cardiac cycle.

Back 9

0.8 sec

Front 10

One superficial pulse that may be readily palpated

Back 10

Radial pulse

Front 11

The left atrioventricular valve

Back 11

Bicuspid valve

Front 12

These arteries ascend through the lateral neck and at the superior border of the larynx and divide into two branches

Back 12

Common carotid arteries

Front 13

Supplies the duodenum and the stomach

Back 13

Common hepatic artery

Front 14

Site where exchanges of food and gases are made

Back 14

Capillaries

Front 15

Carries oxygen-poor blood to the lungs

Back 15

Pulmonary trunk

Front 16

Longest vein in the body, superficial

Back 16

Great saphenous vein

Front 17

Major artery of the thigh

Back 17

Femoral artery

Front 18

Supplies the small intestine

Back 18

Superior messenteric artery

Front 19

Artery usually palpated to take the blood pressure

Back 19

Brachial artery

Front 20

Carries oxygen-rich blood from the lungs.

Back 20

Pulmonary vein

Front 21

Blood enters which of these vessels during ventricular systole?

Back 21

Aorta and pulmonary arteries

Front 22

The tricuspid valve is closed:

Back 22

when the ventricle is in systole

Front 23

The second heart sound is heard during which phase of the cardiac cycle?

Back 23

Isovolumetric relaxation

Front 24

Stenosis of the mitral valve may initially cause a pressure increase in the:

Back 24

Pulmonary circulation

Front 25

If we were able to artificially alter the membrane permeability of pacemaker cells so that sodium influx is more rapid:

Back 25

Slow calcium channels in the pacemaker tissue would be cycling at a greater rate

Front 26

Which of the following are involved directly in pulmonary circulation?

Back 26

Right ventricle, pulmonary artery, left atrium

Front 27

Histologically, the _________ is squamous epithelium supported by a sparse connective tissue layer.

Back 27

Tunica intima (interna)

Front 28

A thrombus (blood clot) in the first branch of the arch of the aorta would affect the flow of blood to the:

Back 28

Right side of the head and neck and right upper arm

Front 29

Cerebral blood flow is regulated by:

Back 29

Intrinsic autoregulatory mechanisms

Front 30

A patient with essential hypertension might have pressures of 200/120 mm Hg. This hypertensive state could result in all of the following changes EXCEPT:

Back 30

Decreased size of the heart muscle