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| 1 | |
Nerves and ganglia that transmit action potentials to smooth muscle, cardiac muscle, and glands for digestion are part of the |
| | A) | PNS. |
| | B) | efferent division. |
| | C) | autonomic nervous system. |
| | D) | parasympathetic division. |
| | E) | all of these |
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| 2 | |
A long cell process extending from the neuron cell body is the |
| | A) | axon. |
| | B) | dendrite. |
| | C) | Nissl body. |
| | D) | mitochondrion. |
| | E) | neuroglia. |
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| 3 | |
Most efferent neurons and most CNS neurons are |
| | A) | bipolar. |
| | B) | multipolar. |
| | C) | unipolar. |
| | D) | neuroglia. |
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| 4 | |
Neuroglia that line fluid-filled cavities and produce and circulate cerebrospinal fluid are |
| | A) | astrocytes. |
| | B) | ependymal cells. |
| | C) | microglia. |
| | D) | oligodendrocytes. |
| | E) | Schwann cells. |
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| 5 | |
In the PNS, bundles of axons and their connective tissue sheaths are called |
| | A) | gray matter. |
| | B) | ganglia. |
| | C) | pathways. |
| | D) | nerves. |
| | E) | nodes of Ranvier. |
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| 6 | |
Which of these statements is true concerning local potentials? |
| | A) | Local potentials must reach the threshold to cause an action potential. |
| | B) | Local potentials travel throughout the whole nerve cell. |
| | C) | A local potential occurs when potassium ion channels open and allow potassium ions to move into the cell. |
| | D) | Local potentials move by saltatory conduction. |
| | E) | Large negative molecules diffuse out of a cell during a local potential. |
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| 7 | |
Which of these is NOT a neurotransmitter? |
| | A) | acetylcholine |
| | B) | acetylcholinesterase |
| | C) | norepinephrine |
| | D) | dopamine |
| | E) | serotonin |
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| 8 | |
Given these parts of a reflex arc: 1. afferent (sensory) neuron 2. efferent (motor) neuron 3. effector organ 4. association neuron 5. sensory receptor, Arrange the parts in the order an action potential would travel after a stimulus is received. |
| | A) | 2,3,5,4,1 |
| | B) | 3,5,1,2,4 |
| | C) | 3,4,1,2,5 |
| | D) | 5,1,4,2,3 |
| | E) | 5,2,4,3,1 |
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| 9 | |
Nuclei that control functions such as heart rate regulation, breathing, swallowing, vomiting, coughing, sneezing, balance, and coordination are found in the |
| | A) | midbrain. |
| | B) | pons. |
| | C) | diencephalon. |
| | D) | medulla oblongata. |
| | E) | reticular formation. |
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| 10 | |
The part of the brain that plays a central role in control of body temperature, hunger, thirst, and emotions, and connects to the pituitary gland is the |
| | A) | pineal body. |
| | B) | colliculi. |
| | C) | hypothalamus. |
| | D) | substantia nigra. |
| | E) | pons. |
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| 11 | |
The cerebellum |
| | A) | is mainly concerned with speech. |
| | B) | is the location for short-term memory. |
| | C) | functions as a comparator between intended and actual movements. |
| | D) | is primarily sensory in function. |
| | E) | all of these |
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| 12 | |
Almost all ascending pathways relaying information to the cerebrum terminate in the |
| | A) | medulla oblongata. |
| | B) | cerebellum. |
| | C) | pons. |
| | D) | thalamus. |
| | E) | midbrain. |
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| 13 | |
Cerebrospinal fluid is produced by the ______ and passes into the blood through the ______. |
| | A) | cerebral aqueduct, arachnoid granulations |
| | B) | choroid plexus, cerebral aqueduct |
| | C) | arachnoid granulations, choroid plexus |
| | D) | choroid plexus, central canal |
| | E) | choroid plexus, arachnoid granulations |
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| 14 | |
Which nerve plexus gives rise to the musculocutaneous, axillary, ulnar, radial, and median nerves? |
| | A) | brachial plexus |
| | B) | cervical plexus |
| | C) | coccygeal plexus |
| | D) | lumbar plexus |
| | E) | sacral plexus |
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| 15 | |
The sympathetic division of the autonomic nervous system |
| | A) | has preganglionic cell bodies in the cranial and sacral regions. |
| | B) | stimulates vegetative activities. |
| | C) | has postganglionic cell bodies in terminal ganglia on or near the target organ. |
| | D) | secretes norepinephrine from most postganglionic neurons. |
| | E) | has many fibers in cranial nerve X. |
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| 16 | |
Which of the following is NOT a function of the nervous system? |
| | A) | Homeostasis |
| | B) | Mental activity |
| | C) | Control of muscles and glands |
| | D) | Integration |
| | E) | All of these are functions of the nervous system. |
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| 17 | |
The myelin sheaths around axons in the PNS are formed by |
| | A) | oligodendrocytes. |
| | B) | microglial cells. |
| | C) | Schwann cells. |
| | D) | ependymal cells. |
| | E) | astrocytes. |
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| 18 | |
If an individual is in a coma they have more than likely suffered some damage to cells of the _________, which has the responsibility of maintaining consciousness and regulating sleep-wake cycles. |
| | A) | reticular formation |
| | B) | substantia nigra |
| | C) | pons |
| | D) | pineal body |
| | E) | medulla oblongata |
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