Lab PP Heart

Question 1

each atria and ventricles are lines by thin serous endothelium called

Answer 1

endocardium

Question 2

septum that divides the heart longitudinally is called the

Answer 2

interatrial or interventricular septum

Question 3

atria are ___ chambers of the heart

Answer 3

receiving

Question 4

right atrium receives oxygen poor blood from the body via the

Answer 4

superior and infereior vena cava and coronary sinus

Question 5

the inferior thick walled ___ are the discharging chambers and form the bulk of the heart

Answer 5

ventricles

Question 6

The right ventricle pumps blood into the pulmonary trunk, which sends the blood to the lungs to be ___

Answer 6

oxygenated

Question 7

left ventricle discharges blood into the __

Answer 7

aorta

Question 8

The ___ is where all the systemic arteries of the body diverge to supply the body tissues with blood.

Answer 8

aorta

Question 9

located between the atrial and ventricular chambers on each side. They prevent backflow into the atria when the ventricles are contracting.

Answer 9

atrioventricular valves

Question 10

has 2 cusps or flaps of endocardium

Answer 10

bicuspid/mitral valve

Question 11

has 3 cusps of endocardium

Answer 11

tricuspid valve

Question 12

cusps are anchored to the ventricular walls by small white collagenic cords known as the__ ___ (literally, heart strings).

Answer 12

chordae tendineae

Question 13

during ___the blood flows passively into the atria and then into the ventricles (the period of ventricular filling).

Answer 13

diastole

Question 14

___is when the ventricles contract and compress the blood in their chamber. During this, the intraventricular blood pressure rises.

Answer 14

systole

Question 15

cardiac muscle is only found in the heart. it is involuntary to ensure a constant __supply

Answer 15

blood

Question 16

areas where the cells interdigitate, and the branching cells are the features that allow for a continuity to cardiac muscle that is not seen in other muscle tissues.

Answer 16

intercalcated discs of cardiac muscle

Question 17

the right side is the__ ___ ___. This pump shunts the carbon dioxide-rich blood in its chambers to the lungs to unload carbon dioxide and pick up oxygen.

Answer 17

pulmonary circulation pump

Question 18

carries oxygen-rich blood from the left heart through the body tissues. It provides the functional blood supply to all of the body’s tissues.

Answer 18

systemic circulation pump