Week 1 Endocrine knowledge check

Which of the following is true regarding endocrine glands?

They release their secretions into the blood.

Which of the following is an increase in the number of receptors, making a target cell more sensitive to a hormone?

up-regulation

Which of the following is not a steroid hormone?

thyroid hormone

Thyroid hormones T₄ and T₃ are ____ hormones that are mainly transported ___ in the blood.

Monoamine, bound to proteins

Which of the following effects on a gland can be caused by a tumor?

both hypersecretion and hyposecretion

Neither follicle stimulating (FSH) hormone nor testosterone alone can stimulate significant sperm production. However, when these hormones act together the testes produce 300,000 sperm per minute. This is an example of which hormone principle?

synergistic effects

Which of the following organs has both endocrine and exocrine functions?

ovary

Which of the following is NOT secreted by the pancreas?

somatotropin

What secretes a hormone in response to low blood calcium?

parathyroid glands

Which of these is not an endocrine gland but plays a role in endocrine function?

kidney

Which of these plays an important role in synchronizing physiological functions with the day/night cycle

melatonin

Vitamin D is important for calcium regulation. What organ system initiates the formation of vitamin D?

integumentary

What does the cortex in the adrenal gland secrete?

cortisol

An example of negative feedback inhibition is:

thyroid hormone inhibiting the anterior pituitary

Which of the following is not produced by the hypothalamus?

Luteinizing hormone (LH)

What does thyrotropin-releasing hormone target?

anterior pituitary

Which of these hormones does NOT stimulate target cells to release another hormone?

antidiuretic hormone (ADH)

Which hormone stimulates glucocorticoid secretion?

adrenocorticotropic hormone (ACTH)

Which of these hormones has the most target cells?

oxytocin