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1 | |
The cells that transmit nerve impulses between parts of the nervous system are called ________. |
| | A) | neuroglia |
| | B) | neurons |
| | C) | motor cells |
| | D) | nervous tissue |
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2 | |
A(n) _____________ is located within the central nervous system and conveys messages between neurons. |
| | A) | sensory neuron |
| | B) | interneuron |
| | C) | motor neuron |
| | D) | All of these are correct. |
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3 | |
The _______ is the portion of a neuron that conducts nerve impulses. |
| | A) | dendrite |
| | B) | axon |
| | C) | myelin sheath |
| | D) | sensory receptor |
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4 | |
This protective covering on the axon is formed by a type of neurglia called Schwann cells. |
| | A) | insulating sheath |
| | B) | axon terminal |
| | C) | myelin sheath |
| | D) | neuroglia sheath |
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5 | |
The instrument that is used to study the nerve impulse is a (an)_____________ |
| | A) | oscilloscope |
| | B) | oscillator |
| | C) | oscillometer |
| | D) | oscillotron |
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6 | |
The resting potential indicates that the charge inside the neuron is __________ compared to the outside. |
| | A) | positive |
| | B) | negative |
| | C) | neutral |
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7 | |
The action potential is measured in millivolts (mV) and when action potential occurs, the membrane potential ranges from ________. |
| | A) | -90mV to +20mV |
| | B) | +65mV to -40mV |
| | C) | -65mV to +40mV |
| | D) | -30mV to +60mV |
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8 | |
The time soon after an action potential has moved on and the sodium gates are unable to open is called the __________. |
| | A) | refraction period |
| | B) | latent period |
| | C) | action potential period |
| | D) | refractory period |
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9 | |
At a synapse, the gap between the axon bulb of one neuron and the dendrites of another is called a(an) _____. |
| | A) | neurotransmitter |
| | B) | synaptic cleft |
| | C) | Schwann cell |
| | D) | All of these are correct. |
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10 | |
At least ____ different neurotransmitters have been identified. |
| | A) | 10 |
| | B) | 15 |
| | C) | 20 |
| | D) | 25 |
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11 | |
When a neuron receives enough excitatory signals that outweigh the inhibitory ones, the axon will most likely |
| | A) | stop transmission of the nerve impulse |
| | B) | transmit a nerve impulse |
| | C) | slow down a nerve impulse |
| | D) | integrate a nerve impulse |
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12 | |
In the central nervous system, the brain and spinal cord are protected by membranes known as the _________ as well as cushioned by cerebrospinal fluid. |
| | A) | meninges |
| | B) | vesicles |
| | C) | tendons |
| | D) | peritoneum |
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13 | |
The spinal cord is the center for thousands of __________. |
| | A) | spinal nerves |
| | B) | cell types |
| | C) | interneurons |
| | D) | reflex arcs |
| | E) | both C and D are correct |
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14 | |
The portion of the brain responsible for higher thought processes is the _____ . |
| | A) | cerebellum |
| | B) | diencephalon |
| | C) | cerebrum |
| | D) | none of these |
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15 | |
Which of the following are examples of areas of the cerebral cortex that have been mapped in detail? |
| | A) | motor areas |
| | B) | somatosensory areas |
| | C) | association areas |
| | D) | All of these are correct. |
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16 | |
The integrating center within the brain that helps to maintain homeostasis is the _____. |
| | A) | thalamus |
| | B) | hypothalamus |
| | C) | pineal gland |
| | D) | cerebrum |
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17 | |
The function of the cerebellum is ______. |
| | A) | to maintain posture and balance |
| | B) | muscle coordination |
| | C) | to assist in learning new motor skills |
| | D) | all are functions of the cerebellum |
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18 | |
The medulla oblongata contains reflex centers for ______. |
| | A) | vomiting, coughing, sneezing, hiccuping, and swallowing |
| | B) | knee-jerk |
| | C) | blinking |
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19 | |
If the portion of the brain stem called the reticular activating system is severely injured, it can cause a _____ . |
| | A) | coma |
| | B) | loss of speech |
| | C) | loss of vision |
| | D) | loss of long term memory |
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20 | |
Within the limbic system, the ________ is/are thought to be involved in learning and memory. |
| | A) | pineal gland |
| | B) | cerebrum |
| | C) | corpus callosum |
| | D) | hippocampus and amygdala |
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21 | |
Recalling facts for a final exam that you learned thoroughly at the beginning of your biology class illustrates what type of memory? |
| | A) | short-term memory |
| | B) | long-term memory |
| | C) | semantic memory |
| | D) | skill memory |
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22 | |
The peripheral nervous system consists of the __________. |
| | A) | cranial nerves and spinal nerves |
| | B) | muscles |
| | C) | skeleton |
| | D) | bones |
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23 | |
Which of the following are characteristic of the sympathetic division of the autonomic system? |
| | A) | inhibits the digestive tract |
| | B) | dilates the bronchi |
| | C) | accelerates the heart rate |
| | D) | All of these are correct. |
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24 | |
Comparing the parasympathetic division to the sympathetic division, the parasympathetic division has what characteristic? |
| | A) | shorter postganglionic fiber |
| | B) | postganglionic fiber secretes acetylcholine |
| | C) | brings responses associated with a relaxed state |
| | D) | All of these are correct. |
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25 | |
Unusual plaques containing beta amyloid are characteristic of what degenerative nervous system disease? |
| | A) | Parkinson's disease |
| | B) | Alzheimer disease |
| | C) | drug dependence |
| | D) | All of these are correct. |
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