Week 2 - Wet Room

Question 1

What are the parts of the Corpus callosum?

Answer 1

Ant->Post:

Rostrum -> Genu -> Body -> Splenium

Question 2

What seperates the two anterior horns of the lateral ventricle?

Answer 2

Septum Pellucidum

Its a septum connecting the corpus callosum superiorly and fornix inferiorly

Question 3

What is the fornix?

Answer 3

Fibres linking hippocampus to the mamillary bodies of the hypothalamus

Question 4

Which one of the basal ganglia is visible as a bulging projection on the floor of the lateral ventricle?

Answer 4

Caudate nucleus

Question 5

What is the function of the thalamus?

Answer 5

Grey matter nuclei acting as a sensory relay centre.

E.g. most general sensory info goes to the Ventro-postero-lateral (VPL) nucleus of the thalamus

Question 6

What is the function of the hypothalamus?

Answer 6

• Hormonal Control
• Blood Pressure
• Thirst and hunger
• Temperature
• Sex drive
• Circadian Rythms

Question 7

Where does the stalk of the pituitary gland go?

Answer 7

It hangs down from the hypothalamus

Question 8

What gland is part of the diencephalon?

Answer 8

Pineal Gland! Immediately posterior to the thalamus and superior to the coliculi

Question 9

Learn the transverse section of the brain from the diagrams in the workbook

Answer 9

etc

Question 10

What is the internal capsule and what artery supplies it?

Answer 10

A white matter tract (Projection fibres)
Anatomically it seperates the basal ganglia an thalamus when seen on a transverse section.

Its made of an anterior and posterior limb connected by the genu

Supplied by middle cerebral artery

Question 11

What basal ganglia is found in the midbrain and how does it relate to the red nucleus?

Answer 11

Substantia Nigra

The red nucleus is anterior to the substantia nigra

Question 12

What is found in the medial pons?

Answer 12

The medial leminiscus (carries sensory fibres) and the motor fibres of the pyramidal tract

Question 13

What makes up the medulla’s pyramids and olives?

Answer 13

Pyramids are CST fibres

Olivary Nuclei make up the olives

Question 14

What are the 3 main coronal sections used in regards to the brain?

Answer 14

Anterior - Just ant to the optic chiasma
Middle - Just post to the optic chiasma
Posterior - Passes through the splenium (Posterior part of corpus callosum)

Question 15

How do you differentiate transverse sections of the spinal cord?

Answer 15

Cervical and thoracic white matter is thin, whilst lumbar and sacral white matter is thicc.

Thoracic and sacral spinal cords have a lateral horn in their white matter for limb plexesus

Question 16

Whats found in the hole in the middle of the spinal cord??

Answer 16

Its called the central canal and contains CSF/ependymal cells