exam 4: Meniges (31)

Question 1

Three membranes that line the skull and vertebral canal and enclose the brain and spinal cord

Answer 1

Meninges

Question 2

label 1-3

Answer 2

1. Dura mater
2. Arachnoid
3. Pia mater

Question 3

Arachnoid + Pia mater=

Answer 3

Leptomeniges

Question 4

Cranial dura fused to the periosteum

is there an epidural space within skull

Answer 4

NO

Question 5

Within the vertebral canal. the dura mater and periosteum are separated leaving a __________________

Answer 5

fat filled epidural space (6) just deep to the yellow ligament

Question 6

Dura mater: Specialized Folds
Falx cerebri

where does this extend into?

Answer 6

longitudinal cerebral fissure (between cerebral hemispheres)

Question 7

Dura mater: Specialized Folds
Falx cerebri

what does this contain

Answer 7

dorsal sagittal sinus (collects blood)

Question 8

identify what the yellow arrow is pointing to

Answer 8

Longitudinal cerebral fissure

Question 9

identify 1 and 2

Answer 9

1. Falx cerebri
   2.Corpus callosum

Question 10

identify

Answer 10

Dura mater

Question 11

identify

Answer 11

Falx cerebri

Question 12

Dura mater: Specialized Folds
Tentorium cerebelli (dural and osseous parts)

where does this extend to

Answer 12

Extend into transverse cerebral fissure (between cerebral hemisphere and cerebellus)

Question 13

Identify

Answer 13

Tentorium cerebelli

Question 14

identify

Answer 14

Transverse cerebral fissure

Question 15

identify

Answer 15

1. Dorsal sagittal sinus
2. Tentorial process-Tentorium cerebelli osseum

Question 16

identify 1 and 2

Answer 16

1. Falx cerebri
2. Tentorium cerebelli

Question 17

what lines the deep surface of the dura mater

Answer 17

Arachnoid

Question 18

what part of the arachnoid contains the cerebrospinal fluid (CSF)

Answer 18

Arachnoid trabeculae transverse subarachnoid space

Question 19

what is intimately attaches to the surface of the CNS

Answer 19

pia mater

Question 20

where does the pia mater extend into

Answer 20

depths of sulci, fissures, crevices

Question 21

identify

Answer 21

cerebellomedullary cistern (cisterna magna)

Question 22

identify

Answer 22

Lumbar cistern

Question 23

What is Myelography

Answer 23

injection of contrast into subarachnoid space

Question 24

Thickened longitudinal cord of pia on lateral margin of the spinal which segmentally attaches to the dura and arachnoid and thus suspends the spinal cord

Answer 24

denticulate ligaments

Question 25

what does the denticulate ligaments attach

Answer 25

segmentally attaches to the dura and arachnoid and thus suspends the spinal cord

Question 26

narrow cord of meninges that attaches conus medularis to the caudal vertebrae

Answer 26

Filum terminale

Question 27

CSF production: Choricoid plexus this is a compact mass of what 3 things

Answer 27

pia, capillaries, and ependymal epithelium

Question 28

what does the Choricoid plexus produce

Answer 28

CSF by secretion and ultrafiltration from blood

Question 29

the choroid plexus present in

Answer 29

present within each ventricle (lateral, 3rd and 4th)

Question 30

identify 1 and 2

Answer 30

1. Choroid plexus 2.Ventricles

Question 31

identify 1 and 2

Answer 31

1. Subarachnoid space 2. Central canal of spinal cord

Question 32

identify 1

Answer 32

Mesencephalic aqueduc

Question 33

how does CSF flow starting at the lateral ventricle

Answer 33

Question 34

how does CSF flow after it reaches the lateral apertures

Answer 34

Question 35

what are the green arrows representing

Answer 35

CSF drainage into the vein system

Question 36

identify 1 and 2

Answer 36

1. Arachnoid villi 2. Falx cerebri

Question 37

what is this showing? what is the cause?

Answer 37

Hydrocephalus; high pressure of CSF in the subarachnoid space due to problems with circulation

Question 38

what is referred to as the pachymeninx

Answer 38

dura mater

Question 39

what does the Corpus callosum do

Answer 39

fibers that communicate the right and left hemispheres

Question 40

identify

Answer 40

Tentorium cerebelli

Question 41

The subarachnoid space has enlargements that are also called ________________ what is the purpose of these enlargements

Answer 41

cisterns; collection of CSF

Question 42

There is communication between the 4th ventricle and the _____________ space, allowing for it to be filled with CSF

Answer 42

subarachnoid

Question 43

the 4th ventricle lives in what 2 areas

Answer 43

pons and medulla oblongata

Question 44

T/F we are producing CSF all the time

Answer 44

true

Question 45

what are arachnoid villi

Answer 45

formations that project into the dura mater sinus that filter CSF into the venous system

Question 46

dura mater sinus joins with ____ and blood gets drains

Answer 46

veins

Question 47

why does hydrocephalous occur due to increased CSF

Answer 47

the bones of the skull are not formed together so the CSF will flow out and around= creating the enlarged head