EX. 27 STRUCTURE OF HEART

the heart is located between the lungs in an area known as the___

mediastinum

what is the name of the layer that is superficial to the pericardial cavity?

parietal pericardium

what is the innermost layer of the heart wall called?

endocardium

is the apex of the heart superior or inferior to the rest of the heart?

inferior

what is the name of the depression between the two ventricles on the anterior surface of the heart?

interventricular sulcus

are auricles …

extensions of the atria or the ventricles?

atria

which three vessels take blood to the right atrium?

inferior vena cava, superior vena cava, & coronary sinus

where do the great cardiac vein and the small cardiac vein take blood?

coronary sinus & right atrium

which blood vessels nourish the heart tissue?

coronary arteries

which structure separates the left atrium from the right atrium?

atrial septum

what is the name of the thin spot between the atria?

fossa ovalis

the bicuspid valve is located between which two chambers of the heart?

left atrium & left ventricle

name the structure between the atrioventricular valve and the papillary muscle:

chordae tendineae

what is the function of the aortic semilunar valve?

prevent back flow of blood

what is another name for the tricuspid valve?

right atrioventricular valve

which cell type makes up most of the myocardium?

myocytes

what adaptation do you see in the walls of the left ventricle being thicker than those of the right ventricle?

pumps blood to the whole body

how does cardiac muscle resemble skeletal muscle?

both striated

cardiac muscle vs skeletal muscle?

cardiac: involuntary

skeletal: voluntary

blood flow through heart:

R atrium, bicuspid valve, R ventricle, pulmonary semilunar valve, pulmonary trunk, pulmonary arteries, lungs, pulmonary veins, L atrium, tricuspid valve, L ventricle, aortic semilunar valve, ascending aorta