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Question 1

Internally the right atrium has _________ on the anterior portion

Answer 1

pectinate muscles

Question 2

The posterior and anterior regions of the right atrium are separated by a C-shaped ridge called the _________

Answer 2

crista terminalis

Question 3

Internally the left atrium is mostly _________

Answer 3

pectinate muscles

Question 4

The_____________ bears a shallow depression, the _________ that marks the spot where an opening, the _________ existed in the fetal heart.

Answer 4

Interatrial septum
fossa ovalis
foramen ovale

Question 5

irregular ridges of muscles mark the internal walls of the ventricular chambers.

Answer 5

trabeculae carneae

Question 6

play a role in valve function, project into the ventricular cavity.

Answer 6

papillary muscles

Question 7

The right ventricle pumps blood into the ___________ which routes the blood to the lungs where gas exchange occurs.

Answer 7

pulmonary trunk

Question 8

The left ventricle ejects blood into the _____

Answer 8

aorta