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Exam 4- CNS
CNS
17
Anatomy
Professional
08/30/2010

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Term
Central Nervous System (CNS) is made up of?
Definition
Brain (cerebrum, cerebellum, and brain stem)
Spinal cord
Term
Perikaryon part of the neuron receives nerve endings that transmit _________ or ________ stimuli from other neurons.
The nucleus is usually large and contains mostly euchromatin and a prominent nucleolus (looks like a _________).
Definition
This part of the neuron receives nerve endings that transmit excitatory or inhibitory stimuli from other neurons.
The nucleus is usually large and contains mostly euchromatin and a prominent nucleolus (cat’s eye).
Term
Bipolar neurons:
Definition
Bipolar neurons have an axon and dendrite and found in the retina, olfactory epithelium, and acoustic ganglia.
Term
multipolar neurons:
Definition
Multipolar neurons have an axon and two or more dendrites and found throughout the nervous system and autonomic ganglia and are the most numerous neurons.
Term
Pseudounipolar neurons have a single process which divides into two branches for a ____________.
These neurons are found in the cranial and spinal ganglia of the _________ nervous system.
Definition
Pseudounipolar neurons have a single process which divides into two branches for a "T"-shaped structure.
These neurons are found in the cranial and spinal ganglia of PNS.
Term
The perikaryon (_____________) is the trophic center of the cell, but can also be receptive to _________.
Definition
The perikaryon (neuron cell body) is the trophic center of the cell, but can also be receptive to stimuli.
Term
What are Nissl Bodies?
Definition
Rough ER and free Ribosomes in the Perikaryon
Term
Chromatolysis
Definition
injury to the neuron causing a reduction in the nissl bodies
Term
What is found only in the perikaryon?
What is found through the whole neuron?
Definition
Only in the perikaryon- golgi bodies
found in body, dendrites, and axon- mitochondria
Term
Neurofilaments:
Definition
Are intermediate filaments that are used for immunocytochemically find neurons
Term
Microtubules play a structural role in the perikaryon and processes and are also involved in mitosis, cytokinesis, and vesicular __________.
Definition
Microtubules play a structural role in the perikaryon and processes and are also involved in mitosis, cytokinesis, and vesicular transport.
Term
4 types of Glial cells in the CNS?
Definition
1. Astrocytes: Protoplasmic andFibrous
2. Oligodendrocytes: Myelinating and Satellite
3. Ependymal cells
4. Microglia
Term
There are about ______ glial cells per neuron.
Some glial cells (astroctyes specifically) _____ divide unlike neurons.
Definition
about 10
can divide
Term
Astrocyte:
Definition
Largest glial cell
Most abundant glial cell
star shaped
Term
Protoplasmic astrocyte found in: ____ matter

Fibrous astrocytes are found in: ______ matter
Definition
Protoplasmic- gray matter
fibrous- white matter
Term
Fibrous astrocytes have a high amount of?
Definition
glial fibrillary acidic protein (GFAP)
Term
GFAP is used to immunocytochemically to detect ________ in CNS tissue (and the optic nerve
Definition
GFAP is used to immunocytochemically to detect astrocytes in CNS tissue (and the optic nerve
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