The external urethral sphincter is the ________ located at the ________.
A. skeletal muscle; exit of the pelvic cavity
B. skeletal muscle; junction of the urinary bladder and the urethra
C. smooth muscle; junction of the urinary bladder and the urethra
D. smooth muscle; proximal to bladder
Answer: A
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Which of the following is NOT a function of phosphorus in the body?
a) Formation of bones and teeth b) Constitute a major buffer system of blood c) Component of DNA and RNA d) Component of many enzymes e) Affects distribution of water through osmosis
Bleeding from a scalp laceration with an underlying skull deformity:
A) may contribute to hypovolemia in adults. B) commonly causes severe shock in adults. C) should be controlled with firm direct pressure. D) is limited due to the scalp's minimal vasculature.
Stepping on a piece of glass would most likely invoke a ________ reflex.
A. Golgi tendon B. motor C. stretch D. withdrawal E. pain
Which of these does not contribute to the cessation of the signal in a synaptic transmission?
A. Neurotransmitters are no longer released. B. Enzymes in the postsynaptic cell break down some neurotransmitters. C. The axon terminal reabsorbs some neurotransmitters by endocytosis. D. Neurotransmitter escapes from the synapse into the nearby extracellular fluid. E. Synaptic vesicles secrete neurotransmitter by exocytosis.