Lecture 2

Question 1

The neural tube forms the

Answer 1

CNS - brain (anterior) and SC (posterior)

Question 2

The neural crest cells become the

Answer 2

PNS

Question 3

Cells that derive from neural tube

Answer 3

Cortical & motor neurons
CNS glia (astrocytes, microglia, oligodendrocytes, ependymal cells)

Question 4

Cells that derive from neural crest

Answer 4

Sensory & autonomic postganglionic motor neurons
PNS glia (satellite & Schwann cells)

Question 5

Primary expansion of brain

Answer 5

Forebrain, midbrain, hindbrain

Question 6

Secondary expansion of brain

Answer 6

Telencephalon, Diencephalon, Mesencephalon, Metencephalon, Myelencephalon

Question 7

Lateral (Sylvian) fissure separates

Answer 7

Temporal lobe from frontal and parietal lobes

Question 8

Central sulcus separates

Answer 8

Frontal from parietal lobes

Question 9

Transverse fissure separates

Answer 9

Cerebrum from cerebellum

Question 10

Longitudinal fissure separates

Answer 10

Right and left hemispheres

Question 11

Insula location

Answer 11

Deep within the lateral fissure

Question 12

The primary sensory cortex is in the

Answer 12

Postcentral gyrus

Question 13

The primary motor cortex is in the

Answer 13

Precentral gyrus

Question 14

The primary visual cortex surrounds the

Answer 14

Calcarine sulcus

Question 15

The primary auditory cortex is in the

Answer 15

Superior temporal gyrus

Question 16

Homunculus from lateral to medial

Answer 16

Face - fingers - hands - arms - thorax - trunk - legs - toes

Question 17

Supramarginal gyrus wraps around the

Answer 17

Lateral fissure

Question 18

Angular gyrus wraps around the

Answer 18

Superior temporal sulcus

Question 19

What protects the brain (3)

Answer 19

Bone, meninges, and CSF

Question 20

What is the dura mater’s vascular supply?

Answer 20

Middle meningeal artery

Question 21

Falx cerebri & attachment points

Answer 21

Dura mater that follows (descends into) the longitudinal fissure
Crista galli and internal occipital protuberance

Question 22

Arachnoid trabeculae function

Answer 22

Hold up the arachnoid mater (maintain subarachnoid space)

Question 23

Bridging veins

Answer 23

‘Bridge’ the subdural space (penetrate dural layer)

Question 24

Differences between cranial and spinal meninges

Answer 24

Cranial Meninges:
- Dura mater: Double layered, attached to inner calvarial surface
- Epidural space: Potential space between periosteum and calvaria
- Arachnoid Villi: Attached to dura mater
- Pia Mater: Attached to Brain surface
Spinal Meninges:
- Dura Mater: Single layered, suspended in vertebral canal
- Epidural Space: Real space between dura and vertebral periosteum
- Arachnoid Mater: Attached to dura mater
- Pia Mater: Attached to spinal cord, and also to dura/arachnoid (denticulate ligaments)