Crepitus Is

question 321

Multiple Choice

Crepitus is:

• A)a grinding noise heard as bone ends rub together.
• B)a congenital hollow depression in the chest.
• C)a condition in which the great toe is angled laterally toward the other toes.
• D)an infection of bone and bone marrow.

---

Definitions:

Medial Pontine Reticular Formation

A complex network of neurons located in the pons of the brainstem, involved in the regulation of motor coordination and sleep-wake cycles.

Peribrachial Area

A region in the brainstem involved in the modulation of sensory information, particularly with respect to pain and visceral inputs.

Cataplexy

Cataplexy is a sudden and transient episode of muscle weakness accompanied by full conscious awareness, typically triggered by emotions such as laughter, and often associated with narcolepsy.

Receptor Surface Area

The total area on a cell's surface where receptors, capable of binding specific substances, are located, influencing cell signaling and response.