Question 6

Chromaffin cells are located in the suprarenal medulla.

Chromaffin cells are specialized cells found within the suprarenal (adrenal) medulla, where they play a crucial role in the production of catecholamines such as adrenaline and norepinephrine.

A) Ovarian cortex

The ovarian cortex is the outer layer of the ovaries and is primarily involved in the development of ovarian follicles and hormone production related to reproduction. Chromaffin cells are not found here, making this option incorrect.

B) Ovarian medulla

The ovarian medulla contains connective tissues and blood vessels but does not house chromaffin cells. This option is incorrect as chromaffin cells are specifically associated with the adrenal glands, not the ovaries.

C) Suprarenal cortex

The suprarenal cortex is the outer portion of the adrenal glands and is responsible for producing steroid hormones. However, chromaffin cells are not located in this region; they reside in the medulla of the adrenal glands, thus making this choice incorrect.

D) Suprarenal medulla

Chromaffin cells are indeed located in the suprarenal medulla, where they synthesize and secrete catecholamines in response to stress. This option is correct as it accurately identifies the location of chromaffin cells.

Conclusion

The correct answer is option D, as chromaffin cells are exclusively located in the suprarenal medulla and are integral to the body's stress response. The other options do not contain chromaffin cells, confirming their incorrectness with respect to the question asked.