The frequency of action potentials generated by the SA node will be increased by which of the following factors?A) Parasympathetic stimulationB) Sympathetic stimulationC) AcetylcholineD) EpinephrineE) All of these would increase the frequency.
What will be an ideal response?
B, D
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Contraction of the cremaster muscle occurs because of
A) sexual arousal and temperature change. B) lowered sperm production and high hormone levels. C) sexual arousal and lowered sperm production. D) temperature change and lowered sperm production. E) None of the answers are corre
Lysozyme within saliva primarily functions to
A. wash materials off teeth. B. initiate the chemical breakdown of starch. C. inhibit bacterial growth. D. moisten and disperse food.
Relative constancy in the internal body environment is known as:
a. Hematostasis b. Hemostasis c. Hermonstasis d. Homeostasis
Lactose is a disaccharide found in milk. Individuals who are lactose intolerant lack the enzyme to break this sugar down into monosaccharides. Based on enzyme nomenclature, what enzyme is deficient in these individuals?
A. Lact ose B. Lact ese C. Lact ase D. Lacto gen