CNS and PNS Flashcards
(30 cards)
Anatomical divisions of the nervous systems are…
CNS and PNS
Central nervous system is divided into…
Brain and Spinal Cord
Another name for the brain is…
outer layer of the brain is made up of…
Inner layer of the brain is made up of..
Encephalon
Grey matter
White matter
The brain includes these 3 parts
The brain is DIVIDED into these 3 sections
Cerebrum, Cerebellum, and brain stem
Forebrain, Midbrain, and Hindbrain (medulla oblongata)
The forebrain is also known as…
It is also known as the ___ part of the brain
it is divided into left and right hemisphere by…
Then the hemispheres are connected by…
Cerebrum
Largest
Longitudinal Sulci
Commissure = Corpus colossum
What are the fxn of the following lobes of brain? Frontal Parietal Temporal Occipital
Frontal lobe - Thoughts, intelligence, Memory, and speech
Parietal lobes - memory by association, distinguish objects by touch/sensory
Temporal - Balance, hearing, taste, smell
Occipital - Sight, visual sensation
This structure is a “stem-like” portion that connects cerebrum to pons and the cerebellum.
Midbrain
What is the hindbrain made up of?
cerebellum, pons, and medulla oblongata
What is the largest portion of the hindbrain?
- it is separated from the cerebrum by ___ cleft.
- Its fxn is to …
- Like Cerebrum it also has hemispheres that are connected by ____
- Not to be confuse with the cleft, this structure contains many of these
- A tissue between curved sulci
Cerebellum
Transverse Cleft Balance, controls skeletal muscles for equilibrium, muscle coordination and posture vermis Transverse sulci Folia
what structure acts as bridge between cerebrum, cerebellum and medulla?
Pons
What part of the hindbrain extends btwn pons and spinal cord?
Medulla Oblongata
what is the midbrain consists of?
Diencephalon, Pons, and Medulla oblongata
Spinal Cord is unlike the brain:
the inner layer is made up of ____ matter
the outer layer is made up of ___ matter
It extends from the brain to the lvl of L_ and L_
The spinal Cord begins at _____ _____ and ends at the structure call ____ _____
Grey matter, White matter
L1 and L2
Foramen Magnum and ends at the Conus Medularis
There are ___ pairs of nerves that derive from 2 roots along both sides of the spinal cord
31
Nerves travels peripherally through these 2 Foramina
Intervertebral and Sacral
what do you call the nerves that extends inferiorly to conus medularis?
Cauda Equina
How many ventricles are there and what are they?
there are 4, Lateral Ventriclesx2, 3rd ventricle, and 4th ventricle
What is produced by the ventricles and what is the fxn?
CSF, for the cushion and shock absorbtion
There are 2 of these ventricles
- what shape is it?
- what are the 3 portions?
- how does it communicate with the 3rd ventricle?
Lateral Ventricles
U shape
Anterior Posterior and Inferior
Via Interventricular Foramina / Foramen of Monroe
This ventricle has a slit like cavity located in the midline.
It communicates with the 4th ventricle via …
3rd ventricle
Cerebral aqueduct/Aqueduct of Sylvius
This ventricle is diamond shaped cavity located in the hindbrain
Communicates with the subarachnoid space through 2 apertures ;____ ___ or aka foramen of ____ and foramina of ______
4th ventricle
medial aperture/foramen of magende
foramina of lushka
Name the layers of the meninges from innermost to outermost? and what spaces are between each layers?
Pia mater, Arachnoid, and Dura Mater
Subarachnoid (btwn pia mater and Arachnoid), Subdural (space between arachnoid and Dura Mater)
which space of the meninges contain the CSF?
In this space, when there is an area of increase width, it is called…
The Widest part is called…
Subarachnoid
Cistern, Cisterna Magna
What layer of the meninges is the layer that lines the cranial bones?
Dura Mater
