The Only Sensory System Whose Afferent Fibers Do NOT Cross

question 10

Multiple Choice

The only sensory system whose afferent fibers do NOT cross is:

• A) the olfactory system.
• B) the auditory system.
• C) the somatosensory system.
• D) the vestibular system.

---

Definitions:

Arousal

A psychological and physiological state of being awake or reactive to stimuli.

Intracellular Thirst

A form of thirst resulting from the osmotic pressure changes within cells, often caused by high intake of salt or loss of water.

Extracellular Thirst

Thirst caused by reduced volume of the extracellular fluid, which is the fluid outside the cells.

Lateral Hypothalamus

A part of the hypothalamus gland which plays a role in hunger and thirst; sometimes referred to as the hunger center of the brain.