ch7 aandp

Parathyroid secretion is triggered by

low blood calcium.

Negative feedback inhibits parathyroid hormone secretion because

target cell responses oppose the original stimulus.

A blood sample is found to have low levels of GHRH and excessive levels of GH and IGFs. Where would the pathology be located in this example?

The anterior pituitary

Why is elevated TSH sometimes associated with hypothyroidism?

There is a lack of feedback inhibition by thyroid hormone on the anterior pituitary.

Which of the following is not a typical way that hormones function?

Hormones control the size and shape of target cells.

A cell's or tissue's response to a hormone primarily depends on the

cell's receptors and the signal transduction pathway used by the cell

What is the implication of the fact that steroid hormones are lipophilic?

They bind to intracellular receptors.

Which of the following is NOT a method of hormone action?

control of electrical signaling pathways

The adrenal cortex produces a steroid hormone called ________ that controls Na+ and K+ homeostasis and another steroid hormone called ________ that controls blood glucose levels.

aldosterone, cortisol

The posterior pituitary gland secretes

ADH (Vasopressin).

The pituitary hormone that controls the release of glucocorticoids from the adrenal cortex is

ACTH.

The pituitary hormone that stimulates cell growth and metabolism in many tissues is

somatotropin.

lipophobic molecule that interacts with receptors on cell surface

peptide hormone

storage and release site for oxytocin

posterior pituitary

calcitonin is released from

thyroid glands

anterior pituitary releases

prolactin

adrenal cortex releases

aldosterone

The term for any hormone that controls the secretion of another hormone is a

trophic hormone.

The hormones of the anterior pituitary are controlled by trophic hormones from the

hypothalamus.

The term for two hormones that have additive effects is

synergists.

The term that describes the need for one hormone to be present for a second hormone to produce a full effect is called

permissive.

Synergism occurs when

hormones working together produce a larger effect than predicted.