Patients with evidence of trauma above the _________ should be considered at risk for an associated spine injury.
A) diaphragm
B) pelvis
C) umbilicus
D) clavicles
Answer: D) clavicles
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Which of the following statements about the action potential is false?
A) The rapid depolarization phase is caused by the entry of potassium ions. B) During the repolarization phase, sodium channels close and potassium channels open. C) During the depolarization phase, membrane potential becomes positive. D) During the hyperpolarization phase, the ion pumps re-establish the sodium and potassium concentrations across the cell membrane. E) Repolarization occurs as potassium ions leave the axon.
What is the origin of the muscle labeled D?
a) fascia over parotid gland b) fascia over deltoid and pectoralis muscles c) skin of the lower lip d) epicranial aponeurosis e) mandible
Which of the following are functions of the lymphoid system in the body?
A) to maintain normal blood volume B) to produce lymphocytes C) to distribute lymphocytes D) to eliminate local variations in the chemical composition of the interstitial fluid E) All of the answers are correct.
What is the role of NO (nitric oxide) in the male sexual act?
A. Contraction of somatic muscles of the urogenital diaphragm B. Activation of a G protein C. Dilation of blood vessels in the penis D. Secretion of mucus