Which sequence correctly traces the visual pathway followed by the majority of axons? a: Optic nerveb: Optic chiasmc: Occipital lobed: Lateral geniculate nucleus of thalamus
A. c, a, b, d
B. a, b, d, c
C. a, d, c, b
D. b, a, d, c
E. a, b, c, d
Answer: B
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This pathway conducts proprioceptive information to the cerebellum for processing to coordinate body movements such as posture, balance, and skilled movements.
A. The spinocerebellar pathway B. The anterolateral pathway C. The musculomedial pathway D. The posterior funiculus-medial lemniscal pathway E. The posterolateral pathway
Most water is reabsorbed from the filtrate in the ________.
A. collecting duct B. ascending loop of Henle C. proximal convoluted tubule D. distal convoluted tubule E. descending loop of Henle
A motor unit consists of:
A) a skeletal muscle and all the neurons that supply it B) a nerve and all of the skeletal muscles supplied by it C) all of the neurons that stimulate a single action D) all of the skeletal muscles that accomplish a single movement E) a neuron and all of the skeletal muscle fibers that it stimulates
In the simplest reflex arc,
A) a sensory neuron contacts few interneurons before synapsing on a motor neuron. B) transmission of the impulse from one cell in the arc to another is electrical. C) the sensory neuron synapses directly with on a motor neuron. D) the response is produced by a polysynaptic chain of at least ten neurons. E) None of the answers are correct.