Chapter 17: The Endocrine System
True or False: Melatonin does not produce an antioxidant effect
False
True or False: Adenylyl cyclase is a membrane enzyme
True
True or False: Melatonin is produced by the pineal gland
True
Iodide ions cross the bloodstream into follicle cells via ______________.
active transport
What hormone contributes to the regulation of the body's fluid and electrolyte balance?
antidiuretic hormone
What can be a result of hyperparathyroidism?
fractures
What statements about the thyroid gland are true?
it manufactures three hormones, the parathyroid gland is embedded within it, and it is located anterior the trachea and inferior to the larynx
The adrenal glands are attached superiorly to which organ?
kidneys
They hypothalamus is functionally and anatomically connected to the posterior pituitary lobe by a bridge of ______________.
nerve axons
Chemical signaling that affects neighboring cells is called _______________.
paracrine
What cells secrete melatonin?
pinealocytes
The gonads produce what class of hormones?
steroid hormones
When blood calcium levels are low, PTH stimulates ________________.
the activity of osteoclasts
A newly developed pesticide has been observed to bind to an intracellular hormone receptor. If ingested, residue from this pesticide could disrupt levels of __________.
thyroid hormone
True or False: The plasma membrane is hydrophilic.
False
True or False: cAMP forms outside the cell
False
What is an example of an anterior pituitary hormone?
TSH
The secretion of thyroid hormones is controlled by _______________.
TSH from the anterior pituitary
Endocrine glands _____________.
secrete chemical messengers that travel in the bloodstream
The development of a goiter indicates that ___________________.
there is an excessive accumulation of colloid in the thyroid follicles
