Lecture 19: Support and Protection of the Nervous System Flashcards Preview

HUBS 191💃✨ > Lecture 19: Support and Protection of the Nervous System > Flashcards

Flashcards in Lecture 19: Support and Protection of the Nervous System Deck (25):
1

The dorsal white columns are part of:

- The sensory system

2

Spinal nerves contain ____linated axons.

- Myelinated and Unmyelinated axons

3

Support is provided by the ______ skeleton.

- Axial

4

The cranium is composed of __ bones. __ are visible, and __ isn't.

- 8
- 7
- 1

5

The cranium is composed of what bones?

- Frontal (1)
- Parietal (2)
- Occipital (1)
- Temporal (2)
- Sphenoid (1) butterfly

6

Bones of the cranium have joints between them called _____.

- Sutures

7

What's the suture between the frontal and parietal bone?

- Coronal Suture
Lambdoid

8

Gaps between sutures (children) are called ____.

- Fontanelles

9

What's the suture between the parietal bones?

- Sagittal suture

10

What's the suture between the parietal bone and occipital bone?

- Lambdoid suture

11

The facial bones are composed of:

- Zygomatic (2)
- Maxillary (2)
- Mandible (1)
- Nasal (1)

12

Meninges act as....

- A protective covering for the brain

13

The three layers of the meninges are the...

- Duramater
- Piamater

14

What're some features of the dura mater?

- Outermost layer of the meninges
- Dense and fibrous (tough)
- Two layers
- Inner layers form dural reflection

15

What're the three different dural reflections?

- Falx cerebri (separates two cerebral hemispheres)
- Falx cerebelli (separates two cerebellum hemispheres)
- Tentorium cerebelli (seperates cerebrum and cerebellum)

16

Venous sinuses are found in the _______.

- Dura mater

17

What're some features of the arachnoid?

- Layer beneath the dura mater
- Contains blood vessels
- Does not extend into sulci

18

What does the subarachnoid space allow to happen? Where is it?

- Cerebrospinal fluid circulation
- Houses blood vessels
- Between the arachnoid and the pia mater

19

What is the function of the arachnoid granulations?

- Pump out old CSF into venus sinus

20

What're some features and functions of the pia mater?

- Transparent and delicate
- Blood vessels in arachnoid sit on top of pia mater
- Adheres to brain and follows gyri and sulci

21

Are the spinal cord meninges similar to the cranial meninges?

- Yes

22

What produces the CSF?

- The choroid plexus

23

**Picture of ventricular system**

- Third Ventricle
- Central Aquaduct
- Lateral Ventricle
- Fourth Ventricle

24

CSF pathway

Lateral ventricle --> 3rd ventricle --> cerebral aqueduct --> 4th ventricle --> central canal of spinal cord / subarachnoid aquaduct

25

What happens when there's an abnormal accumulation of CSF in the ventricles of the brain?

- Hydrocephalus
- Enlarged head

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