When the atria of the heart are full of blood, the ____ valves are closed

a. atrioventricular
b. aortic
c. pulmonary
d. pulmonary and aortic
e. atrioventricular and aortic


ANSWER: d

Biology & Microbiology

You might also like to view...

Mineral soils largely come from weathered limestone and sand

Indicate whether the statement is true or false.

Biology & Microbiology

On which bone would you find extensive sites for muscle attachments?

a. scapula b. sternum c. patella d. rib e. metatarsals

Biology & Microbiology

ADH makes the walls of the collecting duct more permeable to water

____________________ Indicate whether the statement is true or false.

Biology & Microbiology

An example of a TLR would be peptidoglycan found in the cell wall of gram-positive bacteria

Indicate whether the statement is true or false

Biology & Microbiology