A&P II FINAL EXAM STUDY
1. Virtually all of the protein or amino acid-
based hormones exert their effects through intracellular .
a.ions
b.deactivators
c.second messengers
d.nucleotides: c. second messengers
2. C
hemical Substances secreted by cells into the extracellular fluids that reg- ulate the metabolic function of other cells in the body are called .
a.proteins
b.antibodies
c.hormones
d.enzymes: c. hormones
3. The master gland of the endocrine system is the . a.endocrine
b.pituitary
c.adrenal
d.thyroid: b. pituitary
4. The secretion of hormones in response to changing blood levels of ions is known as .
a.neural stimulus
b.hormonal stimulus
c.humoral stimulus
d.ionic stimulus: c. humoral stimulus
5.The hormone that has the greatest effect on the metabolic rate is .
a.growth hormone
b.aldosterone
c.thyroid
d.cortisol: c. thyroid
6. When blood glucose levels fall, the pancreas releases .
a.insulin
b.melatonin c.glucose
d.glucagon: d. glucagon
7.When parathyroid hormone is released
a.blood calcium levels fall
b.osteoclasts are activated
c.calcitonin is inhibited
d.calcium channels are blocked: b. osteoclasts are activated
8.The cells with the most receptors for growth hormones are
a.liver
b.nerves
c.bones
d.blood vessels: c. bones
9.Steroid hormones influence other cells by
a.activating cyclic AMP
b.entering the nucleus of the cell and altering the expression of the gene
c.binding specific receptors and activating G proteins
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