The neuromuscular junction consists of ________
A) the axon terminal coming into close proximity to a muscle fiber
B) the end branch of a single nerve fiber touching a muscle
C) a nerve coming into close proximity to a muscle fiber
D) a nerve touching a muscle
Answer: A
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The brain can use ________ for energy.
A) only glucose B) only lactate C) only ketones D) only fats E) both glucose and ketones
Bending your head back beyond anatomical position is an example of ________
A) circumduction B) flexion C) extension D) hyperextension
The gray matter on the outer surface of the cerebrum is called the ________.
A. cortex B. cerebral medulla C. pia mater D. arbor vitae E. reticular formation
Stretching cardiac muscle results in an increase in the force of contraction due to:
A. activation of K+ channels B. increased Ca++ sensitivity of actin-myosin interactions C. phosphorylation of the ryanodine receptor D. increased phosphorylation of troponin I E. increased Ca++ influx through the Na+-Ca++ antiporter