NA1

Question 1

Forebrain

Answer 1

Becomes
Telencephalon: cerebral hemispheres, basal ganglia

Diencephalon: pineal body, hypothalamus, pituitary, thalamus

Question 2

Midbrain

Answer 2

Tectum
Tegmentum
Superior and inferior colliculi

Regulation of vision and sleep patterns

Question 3

Hindbrain

Answer 3

Metencephalon: cerebellum, pons

Myelencephalon: medulla oblongata

Motor coordination, connection to cortex, vital functions

Question 4

What does the central sulcus divide?

Answer 4

Primary motor cortex and primary sensory cortex

Question 5

Lateral ventricles

Answer 5

In each cerebral hemisphere

Question 6

Third ventricle

Answer 6

Central

Question 7

Fourth ventricle

Answer 7

Inside medulla oblongata

Question 8

How is CSF reabsorbed?

Answer 8

Via arachnoid villi in venous sinuses

Question 9

Somatotopy

Answer 9

Projection of the body on the brain- found in primary motor and primary sensory

Question 10

Path of CSF through brain

Answer 10

1.Choroid plexus in third, fourth, and lateral ventricles
2. Cerebral aqueduct connects third and fourth
3. Out through lateral and median apertures
4. Into subarachnoid space
5, reabsorbed by arachnoid villi into venous system

Question 11

Dura mater

Answer 11

Outer layer of meninges

• two layers: periosteal and meningeal
• blood supply is middle meningeal artery
• venous drainage into pterygoid venous plexus
• innervation: trigeminal nerve, spinal nerves 1-3

Question 12

Dural partitions

Answer 12

Falx Cerebri: vertical division between left and right hemispheres.
Tentorium cerebelli: horizontal, separates occipital lobes and cerebellum

Pressure in middle cranial fossa can cause herniation of temporal lobe though tentorial notch, leading to fatal pressure on brain stem