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Flashcards in Exam Block 1 Deck (58)
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1

What is a Glial Cell?

Supprt for and insulation for the neurons. Including oligodendrocytes, astrocytes, ependymal cells, shwann cells, microglia, and satellite cells.

2

What is a Shwann Cell?

Also known as Neurolemma, this is the myelin of the PNS.

3

What are Microglia?

Phagocytic cells; the immune cells of the CNS

4

What are Oligodendrocytes?

Myelin of the CNS

5

What are Astrocytes?

Support cells of the CNS; Structural; Architectural

6

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.

7

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.

8

What is the myelin of the CNS?

Oligodendorcytes. These have many arms which canbe usedon multiple neuron bodies.

9

What is the myelin of the PNS?

Shwann cells. Do not have multiple arms.

10

Name the 5 types of Spinal nerves.

Cervical, Thorasic, Lumbar, Sacral, and Coccygeal.

11

Define Cervical.

C1-C8 contains cervical plexus and phrenic nerves

12

Define the Cervical Plexus.

C1-C5
They control the skin muscles of face, neck and shoulders.

13

Define Phrenic Nerves.

C3-C5
Nerves to the Diaphragm.
Keeps you alive andregulates respiration.

14

Define Thorasic nerves.

T1-T12.
Contains Brachial Plexus.

15

Define Brachial Plexus.

C5-T1
Voluntary Arm Muscle.

16

Define Lubar Nerves.

L1-L5
Contains:
Conus Medullaris
Filum Terminale
Cauda Equina Begins
Lumbar Plexus

17

Define Conus Medullaris.

Terminationof cord at L2.

18

Define Filum Terminale.

Fibrous CT

19

What is Cauda Equina?

It's where the spinal cord begins to horse tail.

20

Define Lumbar Plexus.

Nerves for the abdomen and upper leg.

21

Define Sacral nerves.

S1-S5
contains the sacral plexus.

22

Define the Sacral Plexus.

Upper, lower leg, foot and sciatic nerve.

23

Define Coccygeal Nerve.

Nerve connected to the tail bone. Last nerve of the spinal cord.

24

Name five main parts of the spinal cord.

White Matter- Outer
Grey Matter - Inner
Central Canal
Gray Commissures
Nerves

25

Name the two parts of a spinal nerve.

Ventral Roots
Dorsal Roots

26

What are Ventral roots incharge of?

Motor

27

What are dorsal roots incharge of?

Sensory

28

Name the five main sections of the brain.

Metencephalon
Telecephalon
Myelencephalon
Medencephalon
Diencephalon

29

Name the parts and the functions of the Metencephalon.

Parts:
Cerebellum
FourthVentricle
Foramen of Magendi
Luschka
Central Canal of Spinal Cord

Function:
Cerebellum coordinates muscel movement
Maintains equlibrium and posture

30

Name the parts and the functions of the Telenephalon.

Parts:
Rhinencephalon
olfactory lobes, bulbs, tracts
Cerebral Hemispheres
grey matter inner/white matter outer
gyrus
sulcus
corpus collosum
lateral ventricles/formen of monroe

Function:
smell, sight, hearing, taste, touch, speech, bod motor, sensory control, cognitive reasoning