There Are ________ Pairs of Cranial Nerves

question 9

Multiple Choice

There are ________ pairs of cranial nerves.

• A) 4
• B) 12
• C) 31
• D) 5

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Definitions:

Second Messenger

A substance inside a cell that acts as a signal molecule in response to an external stimulus, transmitting the message initiated by the first messenger.

Neuroendocrine Signaling

Neuroendocrine cells produce neurohormones that are transported down axons and released into the interstitial fluid.

cAMP

Cyclic Adenosine Monophosphate, known as a secondary messenger, plays a crucial role in numerous biological functions, particularly in controlling metabolism.

Parathyroid Hormone

A hormone secreted by the parathyroid glands that regulates calcium levels in a person's body.