BIOL 100 Quiz 13

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anterior pituitary gland

The target of the regulatory hormones produced by the hypothalamus is the:

A

An individual, driving through his neighborhood, suddenly jams on his car brakes to avoid hitting a child who runs into the road after a ball. A few seconds later, the driver finds that he is shaking and his heart is pounding. This is primarily due to the secretion of A. epinephrine from the adrenal medulla. B. cortisol from the adrenal cortex. C. thyroxine from the thyroid. D. insulin from the pancreas.

C

Hormones are specific to particular tissues because A. they can only be released following depolarization of the target cell. B. they are released next to target tissues, so they cannot interact with other cells. C. target tissues display the appropriate receptor for a particular hormone. D. they will only interact with target cells at a synapse.

insulin

Uptake of blood glucose by liver cells is stimulated by

aldosterone

When sodium levels in the blood are low, _______ triggers reabsorption of sodium from the kidneys.

A

Which of the following is caused by the secretion of atrial natriuretic hormone by the heart? A. decrease in blood pressure B. decrease of blood sugar level C. decrease in kidney function D. decrease in blood calcium level

B

Cortisol is a glucocorticoid that helps maintain blood glucose levels by A. promoting the conversion of amino acids into proteins in muscle tissues. B. promoting fat utilization. C. inhibiting glucose utilization in muscle cells. D. increasing the glucose-dependent inflammatory response.

estrogen and progesterone

The ovaries of women function as endocrine organs by producing

uterus

When oxytocin is released during childbirth, the hormone targets cells in the

thyroid gland

Calcitonin is produced by the:

B

Nonsteroid hormones differ from steroid hormones in that A. they cause a change to occur in the target cell B. they bind to a receptor on the outer surface of the cell membrane. C. they bind to an intracellular receptor. D. they are water insoluble.

C

The action of nonsteroid hormones often results in conversion of ATP to cyclic AMP, which then functions A. as a secondary hormone released into the bloodstream. B. as an enzyme in the generation of ATP. C. to initiate a cascade of enzyme activations. D. as an internal receptor for steroid hormones.

A

The anterior pituitary gland produces A. All of the above are correct. B. TSH. C. PRL. D. LH.

C

The thymus produces two peptides that function to A. increase blood calcium levels. B. regulate thyroxine release. C. aid in the maturation of T lymphocytes. D. promote the breakdown of bone.

TSH

Thyroxine is released from the thyroid gland in response to the presence of


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