Lab 5

Question 1

What is TRH? Where does it come from and where does it go and what does it cause?

Answer 1

Thyrotropin Releasing Hormone. It comes from the hypothalamus to the anterior pituitary to stimulate the release of TSH– Thyroid stimulating hormone. TSH stimulates the thyroid to release Thyroxine, and triiodothyronine. High thyroid hormone activity causes an increase in metabolism causing an decrease in body weight.

Question 2

What is CRH? Where does it come from, where does it go, and what does it cause?

Answer 2

Corticotropin Releasing Hormone. It comes from the hypothalamus and goes to the anterior pituitary to stimulate the release of ACTH–adrenocorticotropic hormone. ACTH stimulates the cortex of the kidney causing it to release cortisol. An increase in cortisol increases metabolism burning body fat and suppresses the immune system.

Question 3

What is hypertrophy?

Answer 3

Hypertrophy is the increase in tissue mass caused by hyper-stimulation

Question 4

What is atrophy?

Answer 4

Atrophy is the decrease of tissue mass caused by hypo-stimulation