Cardiovascular system review

Question 1

the cardiac conduction system includes

Answer 1

the SA node, the AV node, the bundle branches, and the purkinje fibers

Question 2

to get from the right atrium to the right ventricle, blood flows through the right AV, or___, valve.

Answer 2

tricuspid

Question 3

there is/ are ___ pulmonary vein(s) emptying into the right atrium of the heart

Answer 3

no

Question 4

the coronary blood vessels are part of the ___ circuit of the circulatory system

Answer 4

systemic

Question 5

the outermost layer of the heart wall is known as

Answer 5

the epicardium and the visceral pericardium

Question 6

these are some of the points that the blood passes as it circulates through the heart chambers, listed alphabetically: 1) left atrium, 2) left ventricle, 3) mitral valve, 4) pulmonary valve, 5) right atrium, 6) right ventricle, 7) tricuspid valve. Place these in the correct order from the time that blood enters the heart from the venae cavae to the time blood leaves the heart by way of the aorta.

Answer 6

5-7-6-4-1-3-2

Question 7

the ascending aorta and pulmonary trunk develop from the embryonic

Answer 7

conotruncus

Question 8

the ___ prevent the AV valves from bulging into the atria during ventricular systole

Answer 8

tendinous cords

Question 9

blood in the anterior interventricular branch of the left coronary artery flows into myocardial blood capillaries and next drains into

Answer 9

the great cardiac vein

Question 10

what are the characteristics of the heart in old age

Answer 10

ventricular enlargement, a less elastic fibrous skeleton, fewer cells in the conduction system, and less sensitivity to norepinephrine

Question 11

the contraction of any heart chamber is called ___, and its relaxation is called ___

Answer 11

systole, diastole

Question 12

the circulatory route from aorta to the venae cavae is the ___ circuit

Answer 12

systemic

Question 13

the circumflex branch of the left coronary artery travels in a groove called the ___

Answer 13

coronary sulcus

Question 14

the finest passages through which electrical signals pass before reaching the ventricular cardiocytes are called

Answer 14

Purkinje fibers

Question 15

electrical signals pass quickly from one cardiocyte to another through the ___ of the intercalated discs

Answer 15

gap junctions

Question 16

the abnormal bulging of the left AV valve into the atrium is called ___

Answer 16

valvular prolapse

Question 17

the ___ nerves innervate the heart and tend to reduce the heart rate

Answer 17

vagus

Question 18

the sinoatrial node develops from an embryonic heart tube chamber called the ___

Answer 18

sinus venosus

Question 19

the death of cardiac tissue from lack of blood flow is commonly known as a heart attack, but is clinically called ___

Answer 19

myocardial infarction

Question 20

blood in the heart chambers is separated from the myocardium by a thin membrane called the ___

Answer 20

endocardium