Nerve fibers of the ________ tract decussate in the spinal cord and are involved in regulating fine motor movements.
A. anterior spinothalamic
B. lateral corticospinal
C. lateral spinothalamic
D. anterior corticospinal
Answer: D
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Structure I is composed of
A) actin and perimysium.
B) actin and myosin.
C) troponin and tropomyosin.
D) only myosin heads.
E) acetylcholine and cholinesterase.
The condition where fluid compresses the heart and limits its ability to contract is called ________
A) cardiac tamponade B) myocardial infarction C) pericarditis D) angina pectoris
Which of the following is NOT true of the white matter of the spinal cord?
A. Some of the white matter tracts decussate to the opposite side, either in the spinal cord or in the brainstem. B. The white matter surrounds the gray matter in the spinal cord. C. The white matter is located in columns. D. The ascending tracts of the white matter contain motor neurons. E. All of these are true of the white matter of the spinal cord.
Which of the following organelles damages pathogens?
A) cilia B) peroxisomes C) lysosomes D) ribosomes E) nucleus