Med Phys Exam 3 Endocrine & Reproductive - 2026 | Questions with 100% Verified Answers | Latest Update

Med Phys Exam 3 Endocrine & Reproductive - 2026 | Questions with 100%
Verified Answers | Latest Update
Question: How does the hypothalamus impact the anterior pituitary?
Answer:
hormones from hypothalamus travel through blood stream to act on anterior pituitary to release other
hormones -> target -> effect

Question: How does the hypothalamus impact the posterior pituitary?
Answer:
sends signals to posterior pituitary to release hormones

Question: How does somatostatin impact the anterior pituitary gland?
Answer:
inhibits release of growth hormone from anterior pituitary

Question: How does dopamine impact the anterior pituitary?
Answer:
inhibits secretion of prolactin

Question: What is the clinical correlation/disease connected to dopamine?
Answer:
Parkinson's disease - there is decreased dopamine levels which causes an INCREASE in prolactin

Question: What is the physical manifestation that can occur with Parkinsons due to the increase of
prolactin?
Answer:
gynecomastia

Question: What are the hormones released by the hypothalamus that on the anterior pituitary?
Answer:
act GnRH (gonadotropin releasing hormone) TRH (thyrotropin releasing hormone) PRH (prolactin
releasing hormone) GHRH (growth hormone releasing hormone) CRH (corticotropin releasing hormone)

Question: GnRH cascade
Answer:
GnRH from hypothalamus -> anterior pituitary to release LH (luteinizing hormone) and FSH (follicular
stimulating hormone)

,Question: What does LH stimulate?
Answer:
production of sex hormones by gonads

Question: What does FSH stimulate?
Answer:
production of sperm and eggs

Question: TRH cascade
Answer:
TRH from hypothalamus -> anterior pituitary to release TSH (thyroid stimulating hormone)

Question: What does TSH stimulate?
Answer:
the thyroid gland to release thyroid hormone (TH), regulating metabolism

Question: PRH cascade
Answer:
PRH (prolactin releasing hormone) from hypothalamus -> anterior pituitary to release prolactin

Question: What does prolactin stimulate?
Answer:
mammary glands to produce milk

Question: GHRH cascade
Answer:
GHRH (growth hormone releasing hormone) from hypothalamus -> anterior pituitary to release GH
(growth hormone)

Question: What does GHRH stimulate?
Answer:
liver, bone, and muscles to produce insulin like growth factors (IGFs), stimulating growth and
metabolism

Question: CRH cascade
Answer:

, CRH (corticotropin releasing hormone) from hypothalamus -> anterior pituitary to release
adrenocorticotropic hormone (ACTH)

Question: What does ACTH stimulate?
Answer:
the adrenal gland to produce glucocorticoids, regulating metabolism and stress response

Question: What causes pituitary dwarfism? What is the implication?
Answer:
decreased secretion of GH before adolescence

Question: What are the levels of GH, IGF, and GRH in pituitary dwarfism?
Answer:
GH and IGF levels are LOW, GRH levels are HIGH

Question: Effects of pituitary dwarfism?
Answer:
causes stunted growth, lack adult sexual functions

Question: Tx for pituitary dwarfism
Answer:
administer GH

Question: Gigantism is caused by?
Answer:
Increased secretion of GH before adolescence/ epiphyses of long bones are fused usually due to pituitary
tumor

Question: Levels of GRH, GH, and IGF in gigantism?
Answer:
GRH levels are LOW, GH and IGF are HIGH

Question: Effects/Sx of gigantism? This can lead to the destruction of what gland?
Answer:
Sx: extreme growth, hyperglycemia, type 1 DM can lead to destruction of the pituitary gland causing
panhypopituitarism

Question: Tx of gigantism