Which provide rapid transmission via myelinated fibers?
A) large C fibers
B) small A delta fibers
C) both of the above
D) neither of the above
Ans: B) small A delta fibers
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Complex motor behavior such as walking depends on ________ patterns.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements is incorrect?
A. Cristae of the mitochondria are the site of many cellular activities involved in ATP production. B. The matrix of the mitochondrion contains many of the enzymes involved in energy production. C. Mitochondria have an outer membrane folded into cristae. D. Mitochondria have an inner membrane which is folded into cristae.
Place the following steps in order for motor control
1. Upper motor neurons stimulate lower motor neurons. 2. Sensory information is relayed back to the cerebellum so movement can be modified if needed. 3. Upper motor neurons in the premotor cortex select a motor program. 4. Lower motor neurons stimulate a skeletal muscle to contract. 5. The basal nuclei enable the thalamus to stimulate upper motor neurons of the primary cortex. A) 3, 5, 1, 2, 4 B) 2, 5, 3, 1, 4 C) 5, 3, 1, 4, 2 D) 3, 5, 1, 4, 2
Saliva
A. is produced only when there is food in the mouth. B. increases ulceration in the mouth. C. is responsible for peristalsis in the mouth. D. moistens food and begins starch digestion in the mouth. E. does not prevent bacterial infection in the mouth.