Nervous system, Homework assignemnt #1

Involved with neurogenesis, scar formation and BBB maintenance

Astrocytes

Most abundant CNS glial cell

Astrocytes

Match the subdivision of the nervous system with its components. Consists of the brain and spinal cord

Central Nervous System

As you are reading these words on the screen, what part of your brain is allowing you to perform the complex, conscious intellectual task of reading and comprehension? Diencephalon Cerebellum Mesencephalon Cerebrum

Cerebrum

Mnemonic for CSF flow

Cindy planned (choroid plexus) 3 or (3rd ventricle) 4 very (4th ventricle) convenient suppers (central canal of spinal cord) so sid (Subarachnoid Space) Doesn't starve (Dural venous sinus)

Function in the production and circulation of CSF

Ependymal Cells

Ganglia are clusters of neuron cell bodies located within the CNS. True False

False

Nodes of Ranvier are gaps found in the plasma membrane of neurolemmocytes and oligodendrocytes. True/False

False

Form the myelin sheath in the PNS

Neurolemmocytes

Form the myelin sheath in the CNS

Oligodendrocytes

Put the cranial meninges in order, from deep (closest to the brain) to superficial (farthest from the brain). Dura mater Arachnoid mater Pia mater

Pia mater Arachnoid mater Dura mater

PNS cells that surround and insulate the somas

Satellite Cells

Another term for the __________ system is the afferent nervous system.

Sensory

A regenerating axon in the PNS is guided by the regeneration tube, and grows at a rate of about 5 mm per day. True False

True

In myelinated axons, the plasma membrane of neurolemmocytes or oligodendrocytes must repeatedly wrap around a segment of an axon to form the myelin sheath. True/false

True

There are neurolemmocytes or oligodendrocytes at a node of Ranvier. True/False

True

There are neurolemmocytes or oligodendrocytes in unmyelinated areas of the neuron. True/False

True

Pain receptors in the skin send signals to the CNS for processing. These pain receptors are an example of ____________ neurons. afferent efferent association multipolar

afferent

Cells of the lymphatic system

microglia

Macrophages of the CNS

microglia

The most common type of neuron contains many dendrites and a single axon. Structurally, this is classified as a(n) ______________ neuron. anaxonic multipolar unipolar bipolar

multipolar

Includes cranial nerves, spinal nerves, and ganglia

peripheral Nervous System

In unmyelinated axons, the axon may be surrounded by a series of neurolemmocytes or oligodendrocytes. True/False

true