1. Blood glucose levels are least affected by structure
a) adrenal gland
b) thyroid
c) stomach
d) pancreas
2. The structure that secretes both enzymes and hormones is labelled
a) adrenal gland
b) thyroid
c) ovaries
d) pancreas
3. If the temperature in the hypothalamus senses that the blood is too warm,
a) the thyroid gland increases the rate of metabolism
b) skin arterioles dilate
c) the pancreas increases the secretion of glucagon
d) skin arterioles constrict
4. The gland that functions in the greatest number of negative feedback systems is labelled
a) adrenal ( stress response; adrenaline , cortisol
b) pituitary ( TSH, hGH, LH, FSH, ADH)
c) pancreas ( blood sugar levels; insulin, glucagon)
d) thyroid (all body cells, metabolism)
5.The negative feedback sequence for the regulation of thyroxin is
a) high thyroxin = less thyroid stimulating hormone = less thyoxin
b) low thyroxin = less thyroid stimulating hormone = less thyroxin
c) low thyroxin = more thyroid stimulating hormone = less thyroxin
d) high thyroxin = more thyroid stimulating hormone = less thyroxin
6. Blood sugar levels are affected by secretions from glands
a) adrenal, thyroid, and ovaries
b) thyroid, pancreas, and ovaries
c) adrenal, thyroid, and pancreas
d) adrenal, pancreas, and ovaries
7. The hormone that helps regulate growth, development, and utilization of glucose and oxygen by cells is
a) thyroxin
b) ADH
c) insulin
d) adrenalin
8. A higher then normal thyroxine level in the blood inhibits secretion of some substances from the gland labelled.
a) pituitary
b) adrenal
c) pancreas
d) ovaries / testes
9. Rapid weight gain, tiredness, and puffy skin in humans may be caused by
a) increased LH secretion
b) decreased glucagon secretion
c) decreased thyroxine secretion
d) increased insulin production
10. The gland that is stimulated directly by the nervous system to secrete hormones is the structure labelled
a) liver
b) pancreas
c) adrenal
d) kidney
11. The structure that produces hormones only is the
a) thyroid
b) liver
c) kidney
d) ovaries
12. Which structures are involved in negative feedback control of adrenalin (epinephrine) secretion?
a) hypothalamus, medulla oblongata, and adrenal gland
b) pituitary gland, thyroid gland, and medulla oblongata
c) hypothalamus, pituitary gland, and adrenal gland
d) pituitary gland, thyroid gland, and adrenal gland
13. How would eating a meal very high in carbohydrates affect a persons blood glucose and insulin levels after sufficient time has been allowed for digestion and absorption to occur?
a) both glucose and insulin levels would be higher
b) glucose levels would be unchanged while insulin levels would be higher
c)both glucose and insulin levels would be lower
d) glucose levels would be higher while insulin levels would be unchanged
14. Blood sugar levels are elevated directly by some secretions from glands labelled
a) pituitary and thyroid
b) pituitary and pancreas
c) thyroid and adrenal
d) adrenal and pancreas
15. Which hormone acts antagonistically (opposed) to insulin?
a) epinephrine
b) somatotrophin
c) thyroxine
d) glucagon
16. Which sequence illustrates a mechanism used by the body to control the blood glucose level?
a) blood glucose decreases = release of insulin decreases = conversion of glucose into glycogen increases = blood glucose increases
b) blood glucose increases = release of glucagon increases = conversion of glycogen into glucose decreases = blood glucose decreases
c) blood glucose increases = release of insulin increases = conversion of glucose into glycogen increases = blood glucose decreases
d) blood glucose decreases = release of glucagon decreases = conversion of glycogen into glucose decreases = blood glucose increases
17. While playing a vigorous game of basketball, a persons overall rate of metabolism increases. Which two hormones rise so that blood glucose levels meet the needs of the increased metabolic rate
a) insulin and acetylcholine
b) steroids and hGH
c) Epinephrine and glucagon
d) cortisol and ADH
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