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20 terms

A&P LAB #30 Anatomy of the Heart

STUDY
PLAY
mediastinum
location of the heart in the thorax
atria
superior heart chambers
ventricles
inferior heart chambers
epicardium
visceral pericardium
atria
'anterooms' of the heart
myocardium
equals cardiac muscle
coronary arteries
provide nutrient blood to the heart muscle
endocardium
lining of the heart chambers
ventricles
actual 'pumps' of the heart
coronary sinus
drains blood into the right atrium
pericardium
The heart is enclosed in a double-wall sac called?
four (4)
how many chambers is the heart divided into?
True
T or F
Blood flows through the heart in one direction - from the atria to the venticles.
Atria
what is the name of the two receiving chambers of the heart?
Aotra
The left ventricle discharges blood into the ....., from which all systemic arteries of the body diverge to supply the body tissues.
Tricuspid valve
The right atrioventricular valve, or .........., prevents backflow into the right atrium when the right ventricle is contracting.
Right
The heart serves as a double pump. The (right or left) side serves as the pulmonary circulation pump, shunting carbon dioxide-rich blood to the lungs.
coronary arteries
The functional blood supply of the heart itself is provided by the?
intercoalated discs
Two microscopic features of cardiac cells that help distinguish them from other types of muscle cells are branching and?
Left
n the heart, the (right or left) ventricle has thicker walls and a bascially circular cavity shape.