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19 Cards in this Set
- Front
- Back
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The — - consists of the cerebrum, the thalamus, and the hypothalamus |
Forebrain |
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Photoreceptors |
Are light-sensitive cells that contain light-absorbing pigments locates in stacks of membrane |
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The— is the central switching area of the brain |
Thalamus |
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—neurons in the PNS convey sensory input to the CNS |
Sensory |
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Once an action potential reaches the end of an axon, the signal is usually converted into a chemical message and relayed to the next cell at a junction called a |
Synapse |
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The hindbrain- which includes the medulla oblongata, the pons, and the ——-coordinates information dealing with breathing rhythms |
Cerebellum |
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A stimulus —— a neuron if ion flow is changed in such a way that many more positively changed ions enter the cell than leave it |
Depolarizers |
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We are constantly informed of the position of our bodies in space by vast numbers of ——, mechanoreceptors that respond to stretching of or pressure on muscles, tendons, and joints |
Proprioceptors |
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A neurons many highly branched —- receive signals from adjacent cells |
Dendrites |
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A myelin sheath |
Acts an insulator |
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A reflex arc |
Has a sensory neuron, an interneuron and a motor neuron |
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Which area of our brain acts as a “traffic manger”? |
The thalamus |
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Which of the following statements about axons is false? |
They transmit signals in two directions |
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The brain has important interactions with the endocrine system. Which part of the brain directly stimulates the release of hormones from the pituitary gland? |
Hypothalamus |
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The largest, most visible part of the human brain is the |
Cerebrum |
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The branches receiving ends of a nerve cell are called |
Dendrites |
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The cerebrum has four major lines. Which of the following is one of them? |
Parietal |
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Neurotransmitters carry a signal from a stimulated nerve cell to another nerve cell across a gap known as a |
Synaptic cleft |
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To best help it “sniff out” a Fox, a hunting dog probably has a high concentration of |
Chemoreceptors in its nasal cavity |
