During isovolumetric ventricular contraction,
a. rapid filling of the ventricles occurs.
b. all heart valves are closed
c. the maximum volume of blood is ejected.
d. the maximum rate of ejection occurs.
e. the atria are in systole
B
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Which of the following is characteristic of cardiac muscle?
A) Cardiac muscle cells are striated. B) Cardiac muscle cells achieve tetany with every contraction. C) Cardiac muscle fibers are multinucleated. D) Cardiac muscle fibers are faster than skeletal muscles. E) Neurons that innervate cardiac muscle tissue are under voluntary control.
Which of the following structures is not part of the renal tubules?
a. loop of Henle b. Bowman’s capsule c. collecting tubule d. distal convoluted tubule
________ is(are) the primary factor(s) that determine(s) the basal metabolic rate of the body.
A. Cortisol B. Growth hormone C. Epinephrine and norepinephrine D. Thyroid hormones
Blood is which type of tissue?
A) mesenchyme B) nerve C) epithelial D) muscle E) connective