Week 4: Non-neural brain structures

Question 1

What protective layer exists for the brain & spinal cord?

Answer 1

Skull
Vertebral column

Question 2

The brain/spinal cord receive additional protection from capsule like thick membrane called the …..

Answer 2

Meninges

Question 3

What are the three layers of the meninges? Outermost to innermost.

Answer 3

Dura matter
Arachnoid matter
Pia matter

Question 4

The dura matter is the most ….. layer that connects the meninges with the ….. and …..

It is composed of a ……..

The dura matter that surrounds the brain consists of 2 layers: ……. (outermost) & ….. (innermost)

The outer periosteal layer firmly connects the dura matter to the ….. and covers the meningeal layer entirely

The meningeal layer is considered the actual dura matter and between the two layers there are these small channels called …..

Answer 4

1. Outer, skull & vertebral column
2. tough fibrous connective
   tissue
3. periosteal layer (outermost) & the meningeal layer (innermost)
4. Skull
5. Dural venous sinus

Question 5

The dural venous sinus’ have veins that…..

Answer 5

Drain blood from the brain to the internal jugular veins where the blood is then returned to the heart

It also allows cerebral spinal fluid to re-enter the circulation

Question 6

The dura matter of the spinal column is composed of only the meningeal layer and does not contain the …..

Answer 6

Periosteal layer

Question 7

The falx cerebri is a …. shaped fold of dura matter

It projects towards and into the ….

It lies between the midline of the two ….. hemispheres

The posterior band of the falx cerebri blends with the upper surface of the …..

Answer 7

1. Sickle
2. Posterior cerebella notch
3. Cerebral
4. Tentorium Cerebella

Question 8

The tentorium cerebelli is a crescent shaped fold of dura matter which is at the roof of the posterior …. which separates …… from the cerebrum

Answer 8

1. Cranial fossa
2. Cerebellum

Question 9

The arachnoid matter is the ….. layer of the meninges

It connects the …. matter to the ….. matter

Answer 9

Middle
Dura to the pia

Question 10

The arachnoid matter is connected to the pia matter via?

Answer 10

tiny fibrous extensions that expand the subarachnoid space

Question 11

The subarachnoid space provides a route for the passage of …… and ….. and also collect ….. that flows from the …. ventricle

Answer 11

Blood vessels & nerves
Cerebrospinal fluid
4th

Question 12

The pia mater is the thin …. layer of the meninges

It’s in direct contact with and closely covers the …… and the ……..

The pia matter has a rich supply of …… which provides nutrients to nervous tissue

Answer 12

innermost
cerebral cortex & spinal cord
blood vessels

Question 13

The pia matter also contains the …….

This is network of ….. and …. which are specialised ….. cells which altogether produce ….. fluid

The choroid plexus is located within the cerebral ventricles

The pia matter surrounding the spinal cord is composed of two layers – an outer layer consisting of …. fibres and inner layer that encases the …… spinal cord

The spinal pia matter is ….. and less ….. than the pia matter that covers the …..

Answer 13

1. Choroid plexus
2. Capillaries, ependyma, ciliated epithelial & cerebrospinal
3. Collagen & entire
4. Thicker, vascular & brain