BYU Anatomy Lecture 10 (Nervous Tissue) - Bryce

Special

This type of sensory input includes the "big 5" like vision, hearing, taste, smell, and balance/equilibrium."

Somatic

This type of sensory input includes information from the skin, joints, and skeletal muscles.

Visceral

This type of sensory input includes information from the internal organs.

Unipolar

Neuron type:

Hint: (Helps in somatic sensory signals)

Unipolar

This neuron type is very long and always involved in sensory detection. It's cell body is always a part of a ganglia.

Bipolar

Neuron type:

Bipolar

This neuron type is very long and involved in mostly special senses like the inner ear, in the retina, and olfactory centers.

Multipolar

Neuron type:

Multipolar

This neuron type is the most common, including all motor neurons and all neurons in the CNS.

Astrocyte(s)

This type of glial cell is star shaped and located in the CNS.

Astrocyte(s)

Supportive glial cell involved in the blood-brain barrier.

Oligodendrocytes

These glial cells of the CNS are responsible for creating the myelin insulation layer.

T

T/F Oligodendrocytes can cover the axons of multiple different neurons at the same time with myelin.

F (A single schwann cell makes one mylein sheath)

T/F Schwann Cells can cover the axons of multiple different neurons at the same time with myelin.

Microglia

These glial cells are considered the macrophages (immune cells) of the CNS immune system.

Ependymal (Cells)

These glial cells line the ventricles of the CNS and produce cerebral spinal fluid

Satellite Cells

These glial cells of the PNS surround and support the sensory and autonomic ganglia.

Satellite Cells

These glial cells can be compared to the astrocytes of the CNS.

Schwann Cells

These insulate and protect axons of the PNS with myelin.

T

T/F The inner CNS nuclei such as the thalamus are considered gray matter.

Afferent

Are sensory neurons afferent or efferent?

Epineurium

This is the exterior surface layer PNS nerves.

Fascicles

PNS nerves are bundles of ____________.

Perineurium

This is the exterior surface layer of the fascicles of the PNS.

Endoneurium

Bundles of individual PNS axons are wrapped in a layer of ____________.

Multiple Sclerosis

This de-myelinating disease attacks the myelin in the CNS as an autoimmune disease.

Multiple Sclerosis

The symptoms of this disease include blindness, weakness, and numbness.

Alzheimer's

This disease involves accumulation of beta amyloid plaques and tau tangles.

epineurium

perineurium

endoneurium

Name the layers: