During the relative refractory period, _______
A) adaptation occurs
B) no action potentials are generated
C) the stimulus must be above threshold to generate an action potential
D) the stimulus must be below threshold to generate an action potential
Ans: C) the stimulus must be above threshold to generate an action potential
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Which of the following statements is NOT true with regard to bones of the skull?
a) Some skull bones are covered with a mucous membrane. b) The only movable bone in the skull is the mandible. c) The bones of the skull contain foramina but no fissures. d) The facial bones provide support for the entrance of the digestive system. e) Some bones of the skull contain sinus cavities.
Mesenchymal cells are most commonly found in ________ connective tissue.
A) areolar B) dense regular C) embryonic D) reticular
The citric acid cycle:
a. occurs in the mitochondria b. follows glycolysis c. is important in carbohydrate anabolism d. both A and B above
Identify the phases of an action potential
afterpotential depolarization hyperpolarization repolarization