Asked by Cheyna Cooper on Jul 09, 2024
Verified
A "nerve" is defined as ____.
A) neuron fibers bundled inside a sheath of connective tissue
B) a single axon of a neuron
C) a neuron within the central nervous system
D) a ring of neurons in bilaterally symmetrical animals
E) a fiber more than 10 inches in length
Connective Tissue
Tissue that supports, binds, or separates other tissues or organs, with various types including bone, cartilage, fat, blood, and lymph.
Neuron Fibers
Long, slender projections of nerve cells that transmit electrical impulses throughout the nervous system.
Axon
An axon is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body.
- Recognize the fundamental architecture and purpose of neurons.
Verified Answer
DR
David RusnakJul 13, 2024
Final Answer :
A
Explanation :
A nerve is a bundle of neuron fibers (both axons and dendrites) that are surrounded by a sheath of connective tissue. This allows the nerve to transmit electrical signals quickly and efficiently. Choice B is incorrect because a nerve is made up of multiple axons, not just one. Choice C is incorrect because neurons within the central nervous system are not typically referred to as nerves. Choice D is incorrect because a ring of neurons is not a nerve, but rather a nerve net, which is found in organisms such as jellyfish. Choice E is incorrect because the length of a fiber does not determine whether or not it is a nerve.
Learning Objectives
- Recognize the fundamental architecture and purpose of neurons.