Which of the Following Statements About the Juxtaglomerular Apparatus Is

question 2

Multiple Choice

Which of the following statements about the juxtaglomerular apparatus is incorrect?

• A) Afferent arteriole cells are modified to become macula densa cells
• B) Cells of the macula densa are taller and narrower than normal
• C) The juxtaglomular apparatus helps regulate blood pressure
• D) The juxtaglomular apparatus is partly composed of modified cells from the distal thick segment
• E) Juxtaglomerular cells are modified smooth muscle cells

---

Definitions:

Medial Pontine Reticular Formation

A complex network of neurons located in the pons part of the brainstem, involved in regulating various autonomic functions and states of consciousness.

Atonia

A state of muscle relaxation occurring during REM (Rapid Eye Movement) sleep, preventing the sleeper from acting out dreams.

Peribrachial Area

A region in the brain involved in processing pain and modulating sleep-wake cycles, located around the brachium of the inferior colliculus.

Raphe Nuclei

Clusters of neurons located in the brainstem, involved in the regulation of sleep, mood, and appetite, primarily through the release of serotonin.