A&P 2 Ch. 17
How many hormones are produced by the posterior pituitary?
2
A small molecule binds to a G protein, preventing its activation. What direct effect will this have on signaling that involves cAMP?
Adenylyl cyclase will not be activated.
Which of the following statements about insulin is true?
Insulin facilitates the movement of intracellular glucose transporters to the cell membrane.
Which of the following statements about the thyroid gland is true?
It is located anterior to the trachea and inferior to the larynx. The parathyroid glands are embedded within it. It manufactures three hormones.
Which of the following is an anterior pituitary hormone?
TSH
The secretion of thyroid hormones is controlled by ________.
TSH from the hypothalamus
Cushing's disease is a disorder caused by ________.
abnormally high levels of cortisol
Iodide ions cross from the bloodstream into follicle cells via ________.
active transport
Which of the following hormones contributes to the regulation of the body's fluid and electrolyte balance?
antidiuretic hormone
The walls of the atria produce which hormone?
atrial natriuretic peptide
Athletes may take synthetic EPO to boost their ________.
blood oxygen levels
What secretory cell type is found in the adrenal medulla?
chromaffin cells
In the elderly, decreased thyroid function causes ________.
decreased basal metabolic rate
Hormones produced by the thymus play a role in the ________.
development of T cells
The production of melatonin is inhibited by ________.
exposure to bright light
Which of the following can result from hyperparathyroidism?
fractures
If an autoimmune disorder targets the alpha cells, production of which hormone would be directly affected?
glucagon
The end result of the RAAS is to ________.
increase blood pressure
The production of FSH by the anterior pituitary is reduced by which hormone?
inhibin
The adrenal glands are attached superiorly to which organ?
kidneys
. The hypothalamus is functionally and anatomically connected to the posterior pituitary lobe by a bridge of
nerve axons
. A student is in a car accident, and although not hurt, immediately experiences pupil dilation, increased heart rate, and rapid breathing. What type of endocrine system stimulus did the student receive?
neural
The anterior pituitary gland develops from which embryonic germ layer?
oral ectoderm
. Chemical signaling that affects neighboring cells is called
paracrine
What cells secrete melatonin?
pinealocytes
The function of the placental hormone human placental lactogen (hPL) is to ________.
prepare the breasts for lactation
Which of the following responses s not part of the fight-or-flight response?
reduced mental activity
The gonads produce what class of hormones?
steroid hormones
When blood calcium levels are low, PTH stimulates ________.
the activity of osteoclasts
The development of a goiter indicates that ________.
there is an excessive accumulation of colloid in the thyroid follicles
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
