Brain/NS

Question 1

Arachnoid villa

Answer 1

are arachnoid granulations tufted prolongations of the arachnoid that protrude through meningeal layer of dura into dural venous sinuses Large form granular fovolae

Question 2

Anterior Cranial Fossa

Answer 2

Contains frontal lobe Border is lesser wing of sphenoid bone

Question 3

What transmits CSF to superior sagital sinus?

Answer 3

arachnoid granulations - made of inner layer of dura mater

Question 4

What nerves are located in the Cerebral hemispheres?

Answer 4

Olfactory bulb and tract

Question 5

what separates the occipital from the cerebellum?

Answer 5

tentorium cerebelli

Question 6

Falx cerebri

Answer 6

the largest dural foldings lies in longitudinal cerebral fissure separates right and left cerebral hemispheres attaches from frontal crest of frontal bone and crista galli of ethmoidal to internal occipital protuberance posteriorly. is continuous posteriorly with tentorium cerebellis

Question 7

What is stuck on the inner surface of the inner dura mater?

Answer 7

arachnoid mater

Question 8

What nerves are located in the diencephalon?

Answer 8

Optic N. Optic Chiasm optic tract

Question 9

What separates cerebellar hemispheres?

Answer 9

falx cerebelli

Question 10

what nerves originate from the midbrain?

Answer 10

Oculmotor, and trochlear

Question 11

What meninge layer is stuck on the brain?

Answer 11

pia mater

Question 12

Subdural space

Answer 12

Potential space between inner dura and arachnoid mater Leads to subdural hematoma

Question 13

Point just posterior to the optic chiasm of diencephalon

Answer 13

infundibulum

Question 14

what separates the frontal from parietal lobe

Answer 14

Central sulcus

Question 15

Angle of cranial base humans vs. chimpanzee

Answer 15

CBA is much more flexed in humans than in chimps so this allowed the posterior cranial fossa to drop down with the cerebellum and brainstem allowed room for larger occipital and parietal lobe

Question 16

Tentorium Cerebelli

Answer 16

second largest dura foldings separates occipital lobes from the cerebellum Attaches to clinoid proccesses of sphenoid, to petrous temporal, and posterolaterally to inner occipital and parietal

Question 17

Medulla nerves

Answer 17

glossopharyngeal, vagus, hypoglossa

Question 18

Cerebral peduncles

Answer 18

structures on the midbrain that oculomotor runs medially to

Question 19

Petrous Pyramid angle humans vs. chimpanzee

Answer 19

Petrous portion of temporal bone swings laterally to give more room for cravity

Question 20

What is the outmost layer of meninges?

Answer 20

Dura Mater Outer layer

Question 21

Dura Mater Inner Layer

Answer 21

Just inside outer layer of dura mater and surrounds inner skull. Continuous with dura mater of spinal cord at foramen magnum

Question 22

Frontal Lobe Humans vs. Chimps

Answer 22

Humans is superior to orbit Chimps is posterior to orbit

Question 23

what layer is continuous with spinal dura mater?

Answer 23

Inner layer of dura mater

Question 24

located just posterior to infundibulum on the diencephalon

Answer 24

Mamillary bodies

Question 25

what is the space between bone and periostium called?

Answer 25

epidural space

Question 26

Mammillary bodies

Answer 26

located just posterior to infundibulum on the diencephalon

Question 27

How does CSF get into circulation?

Answer 27

CSF is in circulation in subarachnoid space and returns to venus blood at arachnoid granulations

Question 28

Falx Cerebelli

Answer 28

Vertical dural infolding inferior to tentorium cerebelli on posterior cranial fossa Attaches to internal occipital crest and separates cerebellar hemispheres

Question 29

The oculomotor n. runs medially to the __________ on the brain?

Answer 29

cerebral peduncles

Question 30

Lateral sulcus

Answer 30

separates the frontal and parietal from the temporal lobes

Question 31

Posterior cranial fossa

Answer 31

Contains the cerebellum and brainstem anterior border is Petrous of temporal bone contains foramen magnum

Question 32

Dura Mater Outer layer

Answer 32

Outerlayer - periosteum of skull Wraps outside and inside skull

Question 33

Cavernous sinus

Answer 33

large venous plexus located on each side of sella turcica

Question 34

Epidural space for spinal cord

Answer 34

Space between dura and periostium, contains fat and veins

Question 35

where is Cerebral Spinal Fluid found?

Answer 35

Subarachnoid space between arachnoid mater and pia mater

Question 36

Pia Mater

Answer 36

Stuck intimately on brain and follows gyri and sulci continuous with pia mater on spinal cord

Question 37

What is the dura mater separation of right and left cerebral hemispheres?

Answer 37

falx cerebri

Question 38

what is the potential space between dura and arachnoid mater?

Answer 38

subdural space

Question 39

what nerves originate from the pons?

Answer 39

Trigeminal, abducens, facial, vetibulocochlear

Question 40

Diencephalon infundibulum

Answer 40

Point just posterior to the optic chiasm

Question 41

Central sulcus

Answer 41

separates the frontal from parietal lobe

Question 42

What is the epidural space?

Answer 42

potential space between bone and periosteum contains meningeal arteries

Question 43

Tentorial Notch

Answer 43

Concave, antero-medial border of tenorium cerebelli which the brainstem extends from posterior into middle cranial fossa known as jaws of death because with increase pressure due to a lesion, it will start pushing on the temporal lobe and it herniates into posterior cranial fossa. This will crush midbrain and cause not enough O2 or blood to get inside

Question 44

What is the arachnoid mater?

Answer 44

Suck on inner layer of dura mater. Continuous with spinal cord

Question 45

Middle Cranial Fossa

Answer 45

Contains temporal lobe Anteriorly bordered by lesser wing of sphenoid bone, middle is sella turcica and posterior border it petrous temporal bone.