Which of the following statements applies to the autonomic nervous system?
A. The ANS innervates skeletal muscle.
B. ANS functions are consciously controlled.
C. The ANS controls unconscious movement of skeletal muscles.
D. The receptor molecules of the ANS may be muscarinic, nicotinic, or adrenergic.
E. A single neuron from the spinal cord carries action potentials to effector organs in the ANS.
D
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Loss of bone mass has been found in which of the following?
A. bed-ridden patients B. astronauts C. tennis players D. both A and B E. all of the above
Endoplasmic reticulum with ribosomes attached to it is called ________ ER.
A. smooth B. nodular C. dendritic D. rough E. bumpy
Descending tracts carry motor impulses from the cerebral cortex to the spinal cord.
Answer the following statement true (T) or false (F)
The eye measures about ________ in diameter.
A. 22.5 cm B. 2.5 mm C. 12.5 mm D. 12.5 cm E. 2.5 cm