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64 Cards in this Set

  • Front
  • Back

Peri

Around

Dendrites receive signals from

Other neurons

Meninx

Membrane

Meninges...

Protect and cushion the brain and spinal cord

Dura

Strong

Arac

Spider

Pia

Tender

Mater

Mother

Gray matter

Darker tissue of the spinal cord that consists mostly of nerve cell bodies and dendrites

White matter

Lighter tissue of the spinal cord that consists mostly of myelinated axons

Sulcus

Groove on the surface

Ventral

Front

Dorsal

Back

Ganglion

A cluster or nerve cell bodies

Cauda equina

Horses tail

Filum terminale

Terminal thread

Numbers of spinal nerves

8 pairs of cervical


12 pairs of thoracic


5 pairs of lumber


5 pairs of sacral


1 pair of coccygeal

Plexus

Network of nerves

Three biggest nerve plexus

Cervical plexus- head and neck


Brachial plexus- upper limb


Lumbosacral plexus- plevis, genitalia and lower limb

Brachial plexus is divided into

Roots, trunks, divisions, cords and branches

Each trunk has

Anterior and posterior division

Lateral cord formed from...

Two anterior divisions from the superior and middle trunks

Posterior cord formed from

All three posterior divisions

Medial cord formed from

One anterior division from the inferior trunk

Dermatomes

Identifiable regions of skin supplied by a single nerve

White and gray matter locations

Spinal cord - gray matter on inside and white matter on outside


Brain - gray matter on outside and white matter on inside

5 main vesicles of the brain

Telencephalon


Diencephalon


Mesencephalon


Metencephalon


Myelencephalon

Gyri

Mounds on the cerebral Cortex (outer surface)

Sulci

Crevices on the cerebral cortex (outer surface)

Corpus callosum

Largest structure that allows signals to travel from one cerebral hemisphere to the other

Ventricles

Cerebrospinal fluid inside the brain

Septum pellucidum

Separates the two lateral ventricles

Choroid plexus

Group of specialized cells that produce CSF from the blood in a nearby vessel

Longitudinal fissure

Separates the cerebral hemispheres

Transverse fissure interal

Separates the cerebrum and cerebellum

Interthalamic adhesion

Second largest structure that allows signals to travel from one cerebral hemisphere to the other

Habenula

Connects the pineal gland to the thalamus

Anterior and posterior commissures

Allow signals to travel from one cerebral hemisphere to another

Two interventricular foramina

Allow CSF produced in the choroid plexuses in each of the lateral ventricles to flow into the third ventricle

Infundibulum

Connects the hypophysis to the hypothalamus

Chiasm

A crossing or intersecting of two tracts

Optic chiasm

Where the two optic nerves intersect

Corpora quadrigemina

Quadruplet (four) bodies (Latin)

Superior colliculi processes

Sight

Inferior colliculi processes

Sound

Cerebral aqueduct allows

CSF to flow from the third ventricle to the fourth ventricle

Folia

Folds on the surface of the cerebellum

Arbor vitae

White matter structure in the cerebellum that resembles the shape of a tree

Arbor

Tree

Vitae

Life

Cerebellar peduncles

Structure that attach the cerebellum to the brain stem

Medulla oblongata

Structure where the gray and white matter “switch places” btw the two major CNS organs

CSF can exit the fourth ventricle through which four openings

One medial aperture, two lateral apertures, one opening to the central canal of the spinal cord

Dural reflections

Folds of dura mater that extends into the fissures of the brain

Flax cerebri sits into

Longitudinal fissure and physically separates the two cerebral hemisphere

Tentorium cerebelli sits into

Transverse fissure and physically separates the cerebrum and the cerebellum

Dural sinuses

Contain venous blood, and are within dural reflections/dural mater. Collect blood and circulated CSF and shunt them to through the jugular foramen to go back to the heart

Superior and inferior sagittal sinuses are contained within the

Falx cerebri

The straight sinus and confluence of the sinuses are contained within the

Intersection of the falx cerebri and tentorium cerebelli

Straight sinus receives blood from the

Inferior sagittal sinus

Confluence of the sinuses collects blood from the

Superior sagittal and straight sinuses before shunting it laterally to the transverse sinuses

Transverse sinuses are contained within the

Tentorium cerebelli, shunt blood to the sigmoid sinuses

Sigmoid sinuses are contained within the

Dura mater lining the base of the skull, transport venous blood to the jugular foramen

Arachnoid granulations are projections of the

Arachnoid mater into the dural sinuses that allow CSF in the subarachnoid space to enter the dural sinuses