Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 26, Problem 16WIO
Summary Introduction
To explain:
How do these observations such as neuroglia outnumbers neurons in the nervous system by about 10 to 1 and in addition, neuroglia retains the ability to divide, unlike most neurons, relate to the fact that most brain cancers begin in glial cells.
Concept introduction:
Neuron is a basic functional unit of nervous system and is the specialized cells of nervous system that makes a complex network for the transmission of messages. It is rapid and efficient network of nervous system. A neuron involves a cell body, nerve fibers: dendrites and an axon in its structure.
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Chapter 26 Solutions
Biology: Concepts and Investigations
Ch. 26.1 - Prob. 1MCCh. 26.1 - Prob. 2MCCh. 26.1 - Prob. 3MCCh. 26.2 - Prob. 1MCCh. 26.2 - Where is the myelin sheath located?Ch. 26.2 - Prob. 3MCCh. 26.2 - What are the functions of each of the three...Ch. 26.3 - Describe the forces that maintain the distribution...Ch. 26.3 - Prob. 2MCCh. 26.3 - Prob. 3MC
Ch. 26.3 - Prob. 4MCCh. 26.3 - What prevents action potentials from spreading in...Ch. 26.3 - Prob. 6MCCh. 26.3 - How do myelin and the nodes of Ranvier speed...Ch. 26.4 - Describe the structure of a synapse.Ch. 26.4 - Prob. 2MCCh. 26.4 - Prob. 3MCCh. 26.4 - Prob. 4MCCh. 26.5 - Prob. 1MCCh. 26.5 - Prob. 2MCCh. 26.5 - Prob. 3MCCh. 26.5 - Prob. 4MCCh. 26.6 - Prob. 1MCCh. 26.6 - Prob. 2MCCh. 26.6 - Prob. 3MCCh. 26.6 - List some structures that protect the central...Ch. 26.6 - Prob. 5MCCh. 26.7 - The researchers conducted a behavioral experiment...Ch. 26.7 - Prob. 2MCCh. 26 - Some cells of the central nervous system are...Ch. 26 - Prob. 2MCQCh. 26 - What event triggers an action potential? a....Ch. 26 - Prob. 4MCQCh. 26 - Prob. 5MCQCh. 26 - Prob. 6MCQCh. 26 - Prob. 7MCQCh. 26 - Damage to the surface tissue of the spinal cord...Ch. 26 - Prob. 9MCQCh. 26 - Describe some invertebrate nervous systems. Why do...Ch. 26 - Prob. 2WIOCh. 26 - Prob. 3WIOCh. 26 - Prob. 4WIOCh. 26 - What is the connection between the threshold...Ch. 26 - Write a nonbiological analogy for resting...Ch. 26 - Prob. 7WIOCh. 26 - Sketch a synapse: label the axon and synaptic...Ch. 26 - Describe the events that occur at a synapse when a...Ch. 26 - Prob. 10WIOCh. 26 - Prob. 11WIOCh. 26 - Cerebral palsy is a nervous system disorder that...Ch. 26 - Traumatic brain injury can occur when a person...Ch. 26 - Prob. 14WIOCh. 26 - Prob. 15WIOCh. 26 - Prob. 16WIOCh. 26 - Prob. 1PITCh. 26 - Prob. 2PITCh. 26 - PULL IT TOGETHER 4. Acid the somatic, autonomic,...
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- The cells responsible for the transmission of the nerve impulse are ________. neurons oligodendrocytes astrocytes microgliaarrow_forwardWhich of the following central nervous system cells regulate ions, regulate the uptake and/or breakdown of some neurotransmitters, and contribute to the formation of the blood-brain barrier? microglia neuroglia oligodendrocytes astrocytesarrow_forwardNeurons and macroglia are similar in that they develop from _______, whereas microglia develop from _______. neural progenitor cells; macroglial progenitor cells neuronal stem cells; neural tube cells neuronal stem cells; blood-forming stem cells neuroblasts; gliablasts blood-forming stem cells; gliablastsarrow_forward
- Which of the following central nervous system cellsregulate ions, regulate the uptake and/or breakdown ofsome neurotransmitters, and contribute to the formation ofthe blood-brain barrier?a. microgliab. neurogliac. oligodendrocytesd. astrocytesarrow_forward10. Other types of cells, called glia, greatly outnumber neurons in the CNS. These cells are shown below. For each, label the glial cell type and give one or more functions that each serves. a) Cell Type: (b) Cell Type: Function: Function: (b) (a) (d) Cell Type: c) Cell Type: Function: Function: (d) Dopymghe 200s Pon Ed Inc pubhing Benjamin Cumming 11. A simple reflex arc is a wired circuit delivering information to and from the central nervous system. Use the diagram to label the structures. Then briefly describe the type of signal that must pass along one cell, cross, and then affect the next cell in the chain. Use the words of neuroanatomy. The signal:arrow_forwardThe cells of neuroglia are formed from two sources: ectoderm and mesenchyme. What cells have the mesenchymal origin? a. Fibrillar astrocyte b. Microgliocytes c. Ependymal cell d. Oligodendrocyte e. Protoplasmic astrocytearrow_forward
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