Question

question 15 (1 point)
which of the following occurs at puberty?
a) the sex hormones decline
b) the hypothalamus begins to secrete gonadotropic hormones
c) fsh declines
d) the adrenal cortex starts secreting fsh & lh
question 16 (1 point)
a condition that can be caused by too much insulin or too little glucagon is termed.
a) hypoglycemia
b) hyperglucocorticism
c) hypoadrenocorticism
d) hyperglycemia

Explanation:

• Question 15:
• At puberty, the hypothalamus - pituitary - gonad axis becomes active. The hypothalamus secretes gonadotropin - releasing hormone (GnRH), which stimulates the pituitary to secrete gonadotropic hormones (FSH and LH). Sex hormones (e.g., estrogen in females, testosterone in males) increase at puberty, not decline. FSH (follicle - stimulating hormone) increases as the hypothalamus - pituitary - gonad axis is activated. The pituitary (not the adrenal cortex) secretes FSH and LH.
• Question 16:
• Insulin lowers blood glucose levels. Glucagon raises blood glucose levels. When there is too much insulin (which promotes glucose uptake into cells and storage) or too little glucagon (which cannot break down glycogen to release glucose), blood glucose levels drop. Hypoglycemia is low blood glucose. Hyperglucocorticism is related to excess cortisol. Hypoadrenocorticism (e.g., Addison's disease) is related to insufficient adrenal hormones (not directly to insulin - glucagon imbalance). Hyperglycemia is high blood glucose.

Answer:

• Question 15: B. the hypothalamus begins to secrete gonadotropic hormones
• Question 16: a. hypoglycemia