**Question:** All are types of cells present in anterior pituitary except:

A. Lactotrophs (prolactin-secreting cells)
B. Stalk cells
C. Gonadotrophs (follicle-stimulating hormone- and luteinizing hormone-secreting cells)
D. Ectopic cells

**Correct Answer:** D. Ectopic cells

**Core Concept:** Anterior pituitary is a small endocrine gland located at the base of the brain, known as the hypothalamus, and is responsible for regulating various endocrine functions. It contains several types of cells that secrete specific hormones, collectively known as anterior pituitary hormones.

**Why the Correct Answer is Right:** Ectopic cells are not a type of cell found in the anterior pituitary gland. Ectopic cells are cells that produce hormones outside their typical anatomic location. In the context of the anterior pituitary, if a cell were to secrete a hormone from an ectopic location, it would not be considered a part of the normal pituitary cells.

**Why Each Wrong Option is Incorrect:**

A. Lactotrophs (prolactin-secreting cells) are indeed present in the anterior pituitary gland and secrete prolactin, a hormone involved in breast milk production and maintaining the menstrual cycle in females.

B. Stalk cells, also known as ectopic cells, are not found in the anterior pituitary gland. Ectopic cells produce hormones outside their typical anatomic location, but they are not part of the normal pituitary cells.

C. Gonadotrophs (follicle-stimulating hormone- and luteinizing hormone-secreting cells) are responsible for producing gonadotropins, which regulate the reproductive system.

**Clinical Pearl:** Understanding the specific hormones produced by each type of pituitary cell is crucial for diagnosing and managing endocrine disorders, as these cells are responsible for maintaining overall hormonal balance and regulating vital body functions.