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Both ________ and ________ catalyze the hydrolysis of proteins to form peptides.

Paranasal sinuses can be found in all of these bones EXCEPT ______.

___________ lack(s) cartilage.

Gastric juice secretion is increased by ________ action potentials and the hormone ________, which is produced by the stomach.

The ________ salivary glands secrete a saliva rich in ________.

The tricuspid valve prevents backflow of blood from the _________ into the _________.

Quiet inspiration requires the ______.

What can potentially attack a transplanted organ?

The hemoglobin within erythrocytes plays a major role in the transport of ________ by the blood.

___________ accounts for approximately 60% of the plasma proteins and are active in maintaining pH and osmotic concentration gradients.