12. Awons of the lower mator neurons of the anterior corticospinal tracts innerv
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12. Awons of the lower mator neurons of the anterior corticospinal tracts innervate a. Muscles of the lower digestive tract b. Muscles of the respiratory system. c. Axial skeletal muscles d. Skeletal muscles of the upper back and neck 13. The two division of the autonomic nervous system, sympathetic and parasympathetic, a. Function only durivg sleep b. Are comproseof PNS structures oty c. Use pregangionic and postganglionic neorons d. Contain autonomic ganglia to house ganglionic neurons e. Are voluntary and vasomotor Furnctions are housed within the 14. The centers for cardiac, digestive, a. Spinal cord b. Cerebral cortex c. Cerebellum d. Hypothalamus 15. In the brain, theis the integration and command center for autonomic functions a. Hypothalamus c. Medulla d. Cerebral cortex e. Spinal rdExplanation / Answer
Answer. 12.. Axons of lower motor neurons of anterior corticospinal tract innervate: option e. Skeletal muscle that control skilled movement in the limbs.
The lower motor neurons that innervate the distal limb are located in lateral aspect of anterior corticospinal tract, those innervating proximal limb muscles are found in intermediate region, and the medial group of lower motor neurons innervate appendicular and pelvic musculature.
13. The two divisions of autonomic bervous system, sympathetic and parasympathetic: option d. Contain autonomic ganglia to house ganglionic neurons.
Autonomic ganglion is the cluster of nerve cell bodies (ganglion) in the autonomic nervous system, and the two types are sympathetic and parasympathetic ganglion.
14. The centres for cardiac, digestive, and vasomotor functions are housed within the: option e. Brainstem
Brainstem has integrative functions and is involved in cardiovascular system and respiratory control. In addition to digestion and blood vessel diameter changes, it also controls pupil size, blood pressure and accomodation of lens.
15. In the brain, the --------is the integration and command center for autonomic functions: option a. hypothalamus
Hypothalamus contain nuclei that control visceral functions in both divisions of autonomic nervous system.
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