Flashcards in Exam Block 1 Deck (58)
What is a Glial Cell?
Supprt for and insulation for the neurons. Including oligodendrocytes, astrocytes, ependymal cells, shwann cells, microglia, and satellite cells.
What is a Shwann Cell?
Also known as Neurolemma, this is the myelin of the PNS.
What are Microglia?
Phagocytic cells; the immune cells of the CNS
What are Oligodendrocytes?
Myelin of the CNS
What are Astrocytes?
Support cells of the CNS; Structural; Architectural
What are Ependymal Cells?
They produce cerebral spinal fluid. These cells line the CSF-filled centricles in the brain and the central canal of the spinal cord.
What is Myelination?
Myelin is a lipid-rich (fatty) substance that surrounds nerve cell axons to insulate them and increase the rate at which information is passed along the axon.
What is the myelin of the CNS?
Oligodendorcytes. These have many arms which canbe usedon multiple neuron bodies.
What is the myelin of the PNS?
Shwann cells. Do not have multiple arms.
Name the 5 types of Spinal nerves.
Cervical, Thorasic, Lumbar, Sacral, and Coccygeal.
C1-C8 contains cervical plexus and phrenic nerves
Define the Cervical Plexus.
They control the skin muscles of face, neck and shoulders.
Define Phrenic Nerves.
Nerves to the Diaphragm.
Keeps you alive andregulates respiration.
Define Thorasic nerves.
Contains Brachial Plexus.
Define Brachial Plexus.
Voluntary Arm Muscle.
Define Lubar Nerves.
Cauda Equina Begins
Define Conus Medullaris.
Terminationof cord at L2.
Define Filum Terminale.
What is Cauda Equina?
It's where the spinal cord begins to horse tail.
Define Lumbar Plexus.
Nerves for the abdomen and upper leg.
Define Sacral nerves.
contains the sacral plexus.
Define the Sacral Plexus.
Upper, lower leg, foot and sciatic nerve.
Define Coccygeal Nerve.
Nerve connected to the tail bone. Last nerve of the spinal cord.
Name five main parts of the spinal cord.
White Matter- Outer
Grey Matter - Inner
Name the two parts of a spinal nerve.
What are Ventral roots incharge of?
What are dorsal roots incharge of?
Name the five main sections of the brain.
Name the parts and the functions of the Metencephalon.
Foramen of Magendi
Central Canal of Spinal Cord
Cerebellum coordinates muscel movement
Maintains equlibrium and posture