Upper motor neurons are located in the
A) precentral gyrus.
B) postcentral gyrus.
C) brain stem.
D) spinal cord.
E) cerebral hemispheres and the brain stem.
E
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Considering its relationship with other systems of the body, what is the importance of the circulatory system?
What will be an ideal response?
Which lymphatic structure enters the subclavian vein?
A. Lymphatic duct B. Lymphatic trunk C. Lymphatic vessel D. All apply.
Answer the following questions true (T) or false (F)
1. Like all other sensory pathways, the nerve impulses associated with olfaction are routed through the thalamus on the way to the primary olfactory cortex. 2. All taste sensations begin with the entry of hydrogen ions into a gustatory cell. 3. The five major taste sensations are sweet, salty, bitter, sour, and umami.
A sarcomere is the
A. contractile thread that extends the length of the muscle fiber. B. plasma membrane of a muscle fiber. C. protein strand composed of actin or myosin. D. structural and functional unit of the skeletal muscle fiber. E. cytoplasm of a muscle fiber.