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 study of blood is called __________.
Fill in the blank(s) with the appropriate word(s).
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