Exchange between the two main subdivisions of ECF occurs primarily at the
A) veins.
B) muscles.
C) tissues.
D) capillaries.
E) arteries.
Question 2
These structures keep the aortic valve cusps from sticking to the wall of the aorta.
A) auricles
B) chordae tendineae
C) papillary muscles
D) pectinate muscles
E) aortic sinuses