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Visual Essentials of Anatomy & Physiology 1st Edition

Visual Essentials of Anatomy & Physiology (1st Edition)

Book Edition1st Edition
Author(s)Martini, Ober
ISBN9780321780775
PublisherPearson Higher Education
SubjectBiology
Section 7.1: Neurons are nerve cells specialized for intercellular communication
Section 7.2: Oligodendrocytes, astrocytes, ependymal cells, and microglia are neuroglia of the CNS
Section 7.3: Schwann cells and satellite cells protect the axons and cell bodies of sensory and motor neurons in the PNS
Section 7.4: All communication and processing in the nervous system depends on changes in the membrane potential of the individual neurons
Section 7.5: An action potential can affect other portions of the membrane through continuous or saltatory propagation
Section 7.6: At a synapse, information travels from a presynaptic cell to postsynaptic cell
Section EOS1: End of Section 1
Section 7.7: Each region of the brain has distinct structural and functional characteristics
Section 7.8: The cranial meninges and the cerebrospinal fluid protect and support the brain
Section 7.9: Superficial landmarks can be used to divide the surface of the cerebral cortex into lobes
Section 7.10: The lobes of the cerebral cortex contain regions with specific functions
Section 7.11: The diancephalon, brain stem, and cerebellum contain relay stations that processs information outside our awareness
Section 7.12: The reticular activating system of the midbrain is responsible for maintaining consciousness
Section 7.13: Clinical Module: Brain activity can be monitored using external electrodes ; the record is called an electroencephalogram, or E
Module Review
Section 7.13: Clinical Module: Brain activity can be monitored using external electrodes ; the record is called an electroencephalogram, or E
Module Review
Section 7.13: Clinical Module: Brain activity can be monitored using external electrodes ; the record is called an electroencephalogram, or E
Module Review
Section 7.14: The spinal cord contains gray matter and white matter
Section 7.15: Gray matter is the region of integration, and white matter carries information
Section 7.16: The spinal cord is surrounded by the meninges, which consist of the dura mater, arachnoid mater, and pia mater
Section EOS2: End of Section 2

Chapter 7, Section 7.1, Module Review, Exercise a

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Here is a tip:

A neuron has a main body that houses most of its organelles and branches that are essential in communication.

Explanation

The soma of a neuron contains the nucleus, nucleolus, perikaryon (cytoplasm), mitochondria, ribosomes, and Nissl bodies. 

 

The dendrites are slender processes that extend from the neuron's soma. It contains dendritic spines that receive information from other neurons.

 

An axon also projects from the cell body of a neuron. It tends to be longer than dendrites, and it can propagate electrical impulse throughout its length. The parts of the axon are the axoplasm, axolemma, and axon hillock. When an axon has branches, such branches are called telondria.

 

Verified Answer

Soma (cell body)

Dendrites

Axon

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