Test Yourself Test 2

Front 1

which type of blood vessel carries blood away from the heart?

Back 1

Arteriescarry blood away from the heart;

Veins carry blood toward the heart.

Front 2

what are the two parts of the cardiovascular system?

which part carries blood to and from the left rear leg pf a pony?

Back 2

Thepulmonary circulation and the systemic circulation.

The systemic circulation.

Front 3

list six structures found in the mediastinum

Back 3

Heart,

trachea,

esophagus,

thymus,

lymph nodes,

nerves

Front 4

which is located more caudally in a standing pig, the apex or base of the heart?

Back 4

Theapex

Front 5

what is the difference between the endocardium and the pericardium?

Back 5

Theendocardium is the membrane that lines the chambers of the heart.

It lies onthe internal surface of the myocardium; the epicardium lies on the externalsurface of the myocardium and is synonymous with the visceral layer of theserous pericardium

Front 6

which sits closer to the base of the heart, the left or right ventricle?

Back 6

Theleft

Front 7

what is the name of the structure that is a continuation of the myocardium that forms a wall between the two atria? the two ventricles?

Back 7

Interatrialseptum; interventricular septum

Front 8

why is the wall of the right ventricle thinner than that of the wall of the left ventricle?

Back 8

Because theright ventricle doesn’t have to pump as hard to get blood into pulmonarycirculation as the left ventricle does to get blood into systemic circulation

Front 9

what is another name for each of these valves: right AV valve,

semilunar valve in right ventricle,

left AV valve,

semilunar valve in left ventricle?

Back 9

Tricuspidvalve,

pulmonary valve,

mitral or bicuspid valve,

aortic valve

Front 10

what is the function of the chordae tendonae?

Back 10

To prevent theAV valves from opening backward into atria

Front 11

list in order the structures an erythrocyte will pass through (including valves) to move in a complete circuit from the left ventricle back to the left ventricle

Back 11

Aorticvalve,

aorta,

systemic circulation,

vena cava,

right atrium,

tricuspid valve,

right ventricle,

pulmonary valve,

pulmonary circulation,

left atrium,

mitralvalve,
left ventricle

Front 12

what id the pacemaker of the heart and where is it located?

Back 12

SA node, wall of the right atrium

Front 13

list four conductors that make up the rapid conduction system for an impulse created by the hearts pacemaker

Back 13

SA node, AV node, bundle of His, Purkinje fiber system

Front 14

the working phase of a cardiac cycle is_. it involves_ that generates an impulse that results in muscle contraction.

Back 14

Systole, depolarization

Front 15

what is happening in the other three heart chambers during left atrial diastole?

Back 15

Right atrial diastole, right and left ventricular systole

Front 16

when the mitral valve is forced closed it produces part of which heart sound, the first or the second?

Back 16

First sound; the sound of the AV valves closing