Brain shit

Question 1

Gyri

Answer 1

folds on the cortical surface

-(gyrus=singular)

Question 2

Sulci

Answer 2

Depression on the cortical surface of the brain

-sulcus=singular

Question 3

Central Sulcus

Answer 3

separates the frontal cortex from the parietal cortex

Question 4

Lateral Fissure

Answer 4

Sylvian Fissure

-seperates the frontal and parietal cortices from the temporal cortex

Question 5

Preoccipital notch

Answer 5

dividing point between the temporal and occipital cortices

Question 6

Operculum

Answer 6

regions of the cerebrum bordering the lateral fissure

Question 7

What is the CNS organized into?

Answer 7

Cerebral Cortex
Brainstem
Cerebellum
Spinal Cord

Question 8

What makes up the cerebral cortex?

Answer 8

Frontal Cortex
Parietal Cortex
Temporal Cortex
Occipital Cortex
Insular Cortex
Limbic System

Question 9

What makes up the Brainstem?

Answer 9

Midbrain
Pons
Medulla

Question 10

Parieto-occipital sulcus

Answer 10

separates the parietal cortex from he occipital cortex

Question 11

Corpus Callosum

Answer 11

comprised of myelinated axons that interconnect the cerebral cortices of both sides
-Large myelinated fiber tracts=WHITE MATER

Question 12

Thalamus

Answer 12

subcortical structure involved in the relay of information to and form the cerebral cortex

Question 13

Medulla

Answer 13

inferior most portion of the brainstem

-continous with the spinal cord at the foramen magnum

Question 14

Cerebellum

Answer 14

superior to the Doral to the brainstem

-involved with coordination

Question 15

How do the two lateral ventricles communicate with he 3rd ventricle?

Answer 15

inter ventricular foramen

Question 16

Thirdventricle

Answer 16

located between the thalamus and hypothalamus

-continous with cerebral aqueduct

Question 17

How does CSF flow from the fourth ventricle?

Answer 17

Median Aperature (foramen of Magendie)
Lateral Aperature (foramen of Lushka)
Central Canal of Medulla and spinal cord

Question 18

What do the median and lateral apertures open into?

Answer 18

subarachnoid space

-allows CSF to bathe the outer surface of the brain and spinal cord

Question 19

Choroid Plexus

Answer 19

porduces CSF

-located in the later (body and inferior horn), third, and fourth ventricles

Question 20

What is the pathway of flow of CSF?

Answer 20

1. Lateral Ventricles
2. Interventricular Foramen (Foramen of Monro)
3. Third Ventricle
4. Cebral Aqueduct
5. Fourth Ventricle
6. Median (foramen of Magendie/Midline) and lateral apertures (Foramen of Lushka/Bilateral)
   4 TO Subarachnoid space
   5.Arachnoid granulations-protrude into the superior sagittal sinus (dural sinus)
7. Absorbs into venous circulation

Question 21

Arachnoid Granulations

Answer 21

Protrude into the superior sagittal Sinus (Dural Sinus)

-site of absorption of CSF into the systemic circulation

Question 22

Sinus

Answer 22

Venous Blood

-Vascular Structures

Question 23

Dura Mater

Answer 23

Durable/tough

• outer most part of meninges
• thickest membrane

2 Types:

• Periosteal layer of dura mater-around the bone
• Meningeal Layer of Dura mater-deep to periosteal layer

Question 24

Arachnoid Membrane

Answer 24

deep to dura mater

-closely lines the dura mater

Question 25

Subarachnoid space

Answer 25

contains major arteries and veins that supply the CNS

Question 26

Pia Mater

Answer 26

vascularized Areolar membanre

• extends into every sulcus and fissure of the brain
• direct contact with the brain

Question 27

3 layers of meninges

Answer 27

Dura Mater-outer membrane/tough and thick
Arachnoid Membrane- CSF flows int he subarachnoid space
Pia Mater-in contact with he brane

Question 28

Superior Sagittal Sinus

Answer 28

Formed by the splitting of 2 layers of the DURA mater

Question 29

Emissary Veins

Answer 29

pass through foramina in the cranium

-connect superficial veins with deep venous structures like the dural sinuses

Question 30

Diploic veins

Answer 30

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