Nerve Tissue and Nerves
The PNS has two types of neuroglia:
(1) Schwann, and (2) satellite.
The CNS has four types of neuroglia:
(1) astrocytes, (2) microglia, (3) ependyma, and (4) oligodendrocytes.
The parts of a neuron include the:
(1) cell body, (2) dendrites, and (3) the axon.
The functions of neurons include:
(1) detecting stimuli, (2) conducting impulses, (3) some involvement in decision-making.
Neurons can be categorized into the three following functional types:
(1) sensory (afferent), (2) motor (efferent), and (3) interneurons (association or internucial).
Neurons can be categorized into the three following structural types:
(1) unipolar, (2) bipolar, and (3) multipolar.
Multipolar neurons are found in the
CNS.
Bipolar neurons
are associated with special senses.
List the neuroglia of the CNS in order of most processes to least processes:
astrocytes, oligodendrocytes, and microglia.
Motor neurons conduct action potentials
away from the CNS.
Interneurons are found in the
brain and spinal cord.
The CNS consists of the
brain and spinal cord.
Dendrites
bring information toward the cell body.
The nucleus of a neuron is housed in the
cell body.
The PNS consists of the
cranial nerves and spinal nerves.
This neuroglia is either cuboidal or columnar and sometimes has cilia
ependyma.
Neuroglia is the metaphorical ____ of the nervous system.
glue
Interneurons form
links between other neurons.
The axon is a _____ process than are the dendrites.
longer
The neuroglia of the CNS that performs an immune function is the
microglia.
Astrocytes are the ____ neuroglia of the CNS.
multifunctional
Motor neurons are classified structurally as
multipolar.
Interneurons are classified structurally as
mutipolar.
Oligodendrocytes of the CNS produce
myelin.
The Schwann cells, a type of neuroglia of the PNS, produce
myelin.
Nerve tissue is made up of two types of cells:
neurons and neuroglia.
Neuroglia act as
protective and supportive cells of the nervous system.
There are ____ types of neuroglia.
six
The axon
takes information away from the cell body.
The nervous system is divided into two parts:
the (1) Central Nervous System (CNS), and the (2) Peripheral Nervous System (PNS).
The basic structural and functional units of the nervous system are
the neurons.
Sensory neurons conduct action potentials
toward the CNS.
The most common structural type of neurons are
unipolar neurons.
Most sensory neurons are
unipolar, but some are bipolar.
The function of the satellite cells is
unknown.
Ependyma covers the insides of the
ventricles, or spaces in the brain.
