High school biology website with flash animations. Requires current Flash player.
Have-a-Java Quiz 9 - Endocrine System
Endocrine glands typically:
A) are ductless
B) release enzymes
C) release neurotransmitters
D) release their contents out of the body
Islets of Langerhans are found in the:
Cortisol is released from the:
B) adrenal cortex
D) posterior pituitary
Calcium is released from bone into the bloodstream due to the action of:
Aldosterone is produced by the ____________ gland and it causes reabsorption of ________.
A) thyroid; sodium
B) pituitary; water
C) adrenal; sodium
D) thymus; white blood cells
Blood calcium is lowered by the hormone:
An oversecretion of GH (or STH) would lead to:
Which pair of hormones act antagonistically?
A) glucagon and cortisol
B) insulin and adrenalin
C) cortisol and insulin
D) glucagon and adrenalin
This hormone would be at an increased level in a mother who is breast feeding.
GnRH is produced by the ____________ and acts on the ___________.
A) kidney; adrenal
B) pituitary; thyroid
C) adrenal; ovary
D) hypothalamus; pituitary
Which hormone would increase in the blood during dehydration?
A) atrial natriuretic hormone
B) antidiuretic hormone
C) parathyroid hormone
Compared to neurotransmitters, hormones act:
B) on fewer cells
C) for a shorter period of time
D) over longer distances
Steroid hormones are made from precursor molecules of:
B) a single modified amino acid
C) amino acid chains
D) fatty acids
As the sun comes up in the morning, your blood level of __________ goes down and you wake up.
Which hormone is most commonly associated with the "fight or flight" response to stress?
These two hormones are produced by the hypothalamus but stored in the posterior pituitary.
A) insulin and glucagon
B) ADH and oxytocin
C) growth hormone and prolactin
D) thymosin and adrenalin
This hormone from the hypothalamus stimulates release of thyrotropin from the anterior pituitary.
Thyrotropin (or TSH) stimulates the thyroid gland to release:
Thyroxin (or thyroid hormone) travels through the bloodstream acting on many target calls to increase:
A) blood sugar
B) blood calcium
D) anti-inflammatory reactions
Hyposecretion of thyroxin could be caused by a decrease in the release of:
A) TRH or TSH (thyrotropin)
B) TSH or ACTH
C) STHRH or STH
D) FSH or LH
CRH (corticotropin releasing hormone) stimulates the release of _____ from the anterior pituitary.
A) ACTH (adrenocorticotropic hormone)
B) TSH (thyrotropin)
C) STH (somatotropin)
D) PRL (prolactin)
The major target for ACTH is the:
The overall effect of stimulation by ACTH on the target you chose in the question above is:
A) increased blood sugar
B) anti-inflammatory response
C) increased water conservation by kidney
D) both A and B
Too much ACTH release could cause hyperglycemia (high blood sugar). Since sugar is a solute, this could also cause:
A) increased blood pressure
B) increased blood calcium
C) decreased body temperature
D) decreased metabolism
In order to reduce high blood pressure, the hormone _____ could be released to stimulate excretion of sodium thereby reducing blood solutes and hence blood pressure.
B) atrial natriuretic hormone
C) antidiuretic hormone
Another hormone that can affect blood pressure by directly influencing sodium concentration in the blood is:
B) antidiuretic hormone
Hormones that have similar actions (say, both reduce blood pressure) are said to be:
Choose the pair of hormones that have agonistic effects on blood glucose levels.
A) aldosterone and ADH
B) thymosin and thyroxin
C) calcitonin and PTH
D) adrenalin and glucagon
A patient suffering from dwarfism is most likely deficient in one or more of the hormones from this pair:
A) ADH or PTH
B) STHRH or STH
C) TRH or TSH
D) GnRH or LH
A patient that is losing weight and suffering from an increased body temperature could be hypersecreting:
BioFax Quiz 16: Hormones
Who Am I?