What is the best definition of the "receptive field" of an afferent neuron?
A. The area of the body that, when stimulated, leads to activity in that particular afferent neuron
B. The type of stimulus energy to which the afferent neuron is most sensitive
C. The area of the cerebral cortex in which information from that afferent neuron is initially received
D. The number of interneurons with which the central process of the afferent neuron makes synaptic contact via divergence
E. All of the interneuron cell bodies and dendrites onto which the afferent neuron synapses
Answer: A
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The chemical curare is a nicotinic receptor antagonist. How will curare affect skeletal muscle function?
A. It activates an autoimmune disease that destroys myelin. B. It will cause spastic paralysis (sustained, unwanted muscle contraction). C. It will cause persistent twitches with short periods of rest in between. D. It will cause flaccid paralysis (no muscle contraction possible). E. Muscle function is fine, but it will cause a loss of voluntary control.
The process of allowing substances into and out of the cell is controlled by the ________.
A. nucleus B. cell membrane C. lysosomes D. Golgi apparatus
The hormone produced by the pars intermedia of the adenohypophysis during early childhood is
A) FSH. B) ADH. C) TSH. D) MSH. E) ACTH.
Label C represents which of the following structures?
A) blastocoele
B) blastocyst
C) trophoblast
D) developing villi
E) chorion