The pituitary lobe that secretes ACTH, HGH, and Follicle Stimulating Hormone (FSH) is called the:

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Question restatement: The pituitary lobe that secretes ACTH, HGH, and Follicle Stimulating Hormone (FSH) is called the:.

Option 1: 'posterior lobe' — The posterior lobe (neurohypophysis) primarily stores and releases hormones produced in the hypothalamus, such as ADH (vasopressin) and oxytocin. It does not secrete ACTH, growth hormone (HGH), or FSH, so this option is incorrect.

Option 2: 'anterior lobe' — The anterior lobe (also known as the adenohypophysis) is the portion of the pituitary that secretes a variety of hormones, including ACTH (which stimulates the adrenal cortex), growth hormone (HGH), and FSH (which acts on the gonads). This option aligns with the known hormonal roles of the anterior pituitary and is the correct match for the question.

Option 3: 'isthmus' — The isthmus is a structure in the thyroid gland connecting its two lobes; it has no role in the pituitary function. This option is factually unrelated to pituitary anatomy or hormone secretion, so it is incorrect.

Option 4: 'neurohypophysis' — This term refers to the posterior part of the pituitary, which corresponds to the posterior lobe. As already noted, the neurohypophysis does not secrete ACTH, HGH, or FSH. It is incorrect as the description here targets the hormones produced by the anterior lobe rather than the posterior.

Putting the pieces together, the anterior lobe of the pituitary is the source of ACTH, HGH, and FSH, whereas the other options refer to regions or parts that do not secrete these hormones. The mismatch of hormonal secretion profiles in the incorrect choices helps distinguish why they do not fit the question.

hk_264_120258_248438 Chapter 14 Self Test: Endocrine System

The pituitary lobe that secretes ACTH, HGH, and Follicle Stimulating Hormone (FSH) is called the:

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