When they secrete hormones, the ovaries and testes are considered what type of glands?v
a) endocrine
b) exocrine
c) apocrine
d) sebaceous
Answer: a) endocrine
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The movement of which two ions is responsible for maintaining the plateau phase of the action potential of contractile cardiac muscle cells?
a. Na+ and Cl- b. Na+ and K+ c. K+ and Cl- d. Ca2+ and Na+ e. Ca2+ and K+
In a "silent" mutation, the
A. mutation is not in DNA. B. codon that mutates does not cause a change in the amino acid specified. C. mutation does not occur in a codon. D. codon that mutates causes a stop codon to occur instead of the placement of an amino acid. E. codon that mutates causes a change in the amino acid specified.
What is a loss of muscle mass from a lack of activity called?
A. Dystrophy B. Apathy C. Myopathy D. Atrophy E. Tetanus
The study of blood is called __________.
Fill in the blank(s) with the appropriate word(s).