BIOLOGY
5th Edition
ISBN: 9781264104680
Author: BROOKER
Publisher: MCG
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Chapter 42, Problem 4TY
Summary Introduction
Introduction:
Neurons can be defined as a part or unit of the nervous system that is involved in carrying electrical impulses. The neurons are responsible for the transmission of information in the form of electrical signals.
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1) Which of the following accurately describes the direction of an impulse moving through a neuron that carries information to the central nervous system (CNS) from the peripheral nervous system (PNS)?a. A sensory (afferent) neuron, impulse moving distally.b. A motor (efferent) neuron, impulse moving proximally.c. A motor (efferent neuron, impulse moving distally.d. A sensory (afferent) neuron, impulse moving proximally.
2) The central nervous system (CNS) is composed ofa. spinal nerves.b. sense receptors.c. the brain and spinal cord.d. nerves of the internal organs.
Motor neurons and interneurons are neurons.a. pseudo-unipolar c. multipolarb. bipolar d. afferent
The integrative functions of the nervous system are performed mainly bya. afferent neurons.b. efferent neurons.c. neuroglia.d. sensory neurons.e. interneurons.
Chapter 42 Solutions
BIOLOGY
Ch. 42.1 - Prob. 1CCCh. 42.2 - Prob. 1CSCh. 42.3 - Prob. 1CSCh. 42.3 - Prob. 2CSCh. 42.3 - Prob. 1CCCh. 42.3 - Prob. 2CCCh. 42.4 - What key prior observation led Loewi to develop...Ch. 42.4 - CoreSKILL The results of Loewis experiment...Ch. 42.4 - Prob. 3EQCh. 42 - Prob. 1TY
Ch. 42 - Prob. 2TYCh. 42 - The myelin sheath a. is produced by neurons in the...Ch. 42 - Prob. 4TYCh. 42 - Prob. 5TYCh. 42 - Which of the following contribute(s) to the...Ch. 42 - Prob. 7TYCh. 42 - Prob. 8TYCh. 42 - Prob. 9TYCh. 42 - Prob. 10TYCh. 42 - Prob. 1CQCh. 42 - Prob. 2CQCh. 42 - Prob. 3CQCh. 42 - Describe the difference between an electrical...Ch. 42 - Prob. 2COQ
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- Another name for the axon of a neuron is:- a. nerve fiber. b. neurofibril. c. neurilemma. d. axoplasm. e. endoneuriumarrow_forwardWhich of the following is not a part of the periphrial nervous system (PNS)? a.somatic nervous system b.autonomic nervous system c.sensory neurons d. motor neurons e. spinal cordarrow_forwardOligodendrocytes and Schwann cells generate a fatty substance known as a. glial. c. myelin. b. soma. d. neurilemma.arrow_forward
- The following is incorrect about directions of impulses in the neurons Select one: a. Sensory or afferent neurons: transmit impulses from sense organs to the CNS. O. b. Motor or afferent neurons: carry impulses from CNS to effector organs c Association or interneuron: lies between the sensory & motor neurons Motor neurons are divided into upper and lower motor neurons All are incorrectarrow_forwardMatch the description with the statement that best describes the following neural circuits. a single post-synaptic neuron receives input from multiple pre- synaptic neurons causes the stimulation of the post-synaptic neuron continually similar to a positive feedback response A. diverging circuits B. converging circuits C. reverberating circuits causes a longer lasting stimulus of the post-synaptic neuron D. parallel after discharge circuits a single pre-synaptic neuron synapses with multiple post-synaptic neurons Moving to another question will save this response. Photos A39 DEC 3 17 étvarrow_forwardMark the following statements as true of false. If a statement is false, correct it to make a true statement. a. Ependymal cells regulate the composition and movement of cerebrospinal fluid. b. Schwann cells make myelin in the peripheral nervous system c. Microglia are neuroglial cells with an immune function. d. Oligodendrocytes repair damaged axons in the peripheral nervous system. e. Astrocytes regulate the extracellular environment of the brain and are key components of the blood-brain barrier. f. Oligodendrocytes and Schwann cells perform similar functions in different parts of the nervous system.arrow_forward
- The axons of myelinated neurons are imbedded in a protective covering of A. Schwann cells B. gray matter. C. nodes of Ranvier D. synaptic knobs.arrow_forwardThe rate of information transmission from the central nervous system (CNS) to an effector organ will be slowed by... A. increasing the diameter of the axons B. increasing the number of nerve cells between the CNS and the effector organ C. adding a myelin sheath to the axons D. increasing the distance between the nodes of Ranvier E. None of the abovearrow_forwardA bundle of axons in the peripheral nervous system is called a: A. Neuron B. Ganglion 1 C. Tractarrow_forward
- 32) In order for a nerve impulse to be transmitted across a synapse, a neurotransmitter must be released froma. an axon terminal.b. a dendrite.c. a soma.d. an axon hillock. 33) What part of a neuron is responsible for receiving information?a. Axon.b. Node of Ranvier. c. Dendrite.d. Myelin sheath.arrow_forwardThe part of the nervous system that controls smooth muscle, cardiacmuscle, and glands is thea. somatic nervous system. c. skeletal division.b. autonomic nervous system. d. sensory division.arrow_forwardWhich of the following is/are found only in the PNS? a. Nerves b. Astrocytes с. Мyelin d. Lipofuscin e. Unmyelinated axonsarrow_forward
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