The two functional divisions of the peripheral nervous

The two functional divisions of the peripheral nervous system are the afferent and efferent divisions. What are their respective functions? a. control of the central nervous system; control of the peripheral nervous system b. control of neurons; control of neuroglia c. sensory input to the CNS; carries motor commands to muscles or glands d. carries motor commands to muscles or glands; sensory input to the CNS © 2012 Pearson Education, Inc.

Damage to somatic motor neurons of the efferent division of the PNS would affect the ability to: a. learn new facts. b. stimulate skeletal muscle. c. experience sensory stimuli. d. remember past events. © 2012 Pearson Education, Inc.

The functional classification of neurons that are responsible for integrating sensory information with motor output are called ______. These neurons are located _____. a. motor neurons; in the anterior horn of the spinal cord b. proprioceptors; in skeletal muscles and joints c. interneurons; almost exclusively in the CNS d. interoceptors; in the digestive, respiratory, and cardiovascular systems © 2012 Pearson Education, Inc.

Which of the CNS neuroglial cells function as phagocytic cells? a. satellite cells b. microglia c. oligodendrocytes d. astrocytes © 2012 Pearson Education, Inc.

Which type of neuroglia would be found lining the hollow regions of the CNS? a. astrocytes b. microglia c. ependymal cells d. oligodendrocytes © 2012 Pearson Education, Inc.

Which of these is NOT a site at which acetylcholine is released at a synapse? a. at neuromuscular junctions with skeletal muscles b. at ganglionic neuron-to-neuron synapses in the ANS c. sometimes at postganglionic synapses in the sympathetic division of the ANS d. none of the above © 2012 Pearson Education, Inc.

The effects of a neurotransmitter on the postsynaptic membrane depend on: a. the time involved in calcium influx across the synapse. b. the rate of enzyme inhibition. c. the properties of the release of neurotransmitter. d. the type of receptor. © 2012 Pearson Education, Inc.

Which structure of a neuron is capable of propagating an electrical impulse? a. dendrite b. axon c. cell body d. perikaryon © 2012 Pearson Education, Inc.

Norepinephrine, dopamine, and serotonin are all members of which category of neurotransmitter? a. hormones b. biogenic amines c. amino acids d. neuropeptides © 2012 Pearson Education, Inc.

A person you know has experienced sleep problems and prolonged depression. Which neurotransmitter may be in short supply? a. dopamine b. any of the opioids c. acetylcholine d. serotonin © 2012 Pearson Education, Inc.

One axon propagates action potentials at 50 meters per second; another carries them at 1 meter per second. Which axon is myelinated? a. axon that propagates at 50 meters per second b. axon that propagates at 1 meter per second © 2012 Pearson Education, Inc.

Which of the following statements is (are) true with regard to saltatory propagation? a. Myelinated areas of the axon increase propagation. b. Only nodes along a myelinated axon can respond to a depolarizing stimulus. c. Continuous propagation uses less energy, and fewer sodium ions must be pumped out. d. A and B are correct. © 2012 Pearson Education, Inc.