The sarcolemma of a resting muscle fiber is most permeable to ________.
A. sodium
B. magnesium
C. lithium
D. calcium
E. potassium
Answer: E
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The sex hormones from the adrenal cortex are primarily androgens.
Answer the following statement true (T) or false (F)
A neuron and all the muscle fibers it stimulates is called a ________
A) fascicle B) myoneural junction C) synaptic cleft D) motor unit
The ________ body plane of section divides the body into superior and inferior parts
A) oblique B) transverse C) sagittal D) frontal
Which statement is incorrect regarding reflexes?
A. The responses of reflexes are always predictable. B. Both the brain and spinal cord are always involved in any types of the reflexes. C. Effectors are always involved in the reflexes. D. The responses of reflexes are always rapid. E. The responses of reflexes are always involuntary.