Week 2 Wet Room

Question 1

What kind of fibres pass through the corpus callosum

Answer 1

Commmisural fibres

Question 2

Describe the septum pellucidum

Answer 2

A thin sheet which lies in the mid sagittal plane and separates the anterior horns of the 2 lateral ventricles

Question 3

What surrounds the septum pellucisum

Answer 3

Corpus callosum and Fornix

Question 4

What is the Fornix

Answer 4

Bundle of fibres which links the hippocampus with the mammillary bodies of the hypothalamus

Question 5

List some of the functions of the hypothalamus

Answer 5

Homeostasis
Endocrine control
Autonomic control
Limbic functions
Sexual behaviour
Regulating body temperature

Question 6

What dural fold overlies the pituitary gland

Answer 6

diaphragma sellae- dura mater

Question 7

Where are the colliculi in relation to the pineal gland

Answer 7

Inferior to pineal gland

Question 8

Name some features seen in a transverse section of the brain

Answer 8

Median longitudinal fissure
Anterior horn of lateral ventricle
Caudate nucleus
Lentiform nucleus (putamen and globus pallidus)
Thalamus
Tail of caudate nucleus
Posterior horn of lateral ventricle
Third ventricle

Question 9

What structures together constitute the basal ganglia (nuclei)

Answer 9

Lentiform nucleus

Caudate nucleus

Question 10

What is the name given to the fibres that connect the cerebral hemispheres with other parts of the brain

Answer 10

Projection fibres

Question 11

Which cerebral artery through one of its branches supplies the internal capsule

Answer 11

Middle cerebral artery

Question 12

Identify a distinctive feature of the midbrain

Answer 12

Substantia nigra

Question 13

Which group of structures is the substantia migrant a part of

Answer 13

Basal ganglia

Question 14

Where would the red nucleus be in relation to the substantial nigra

Answer 14

Anterior to it

Question 15

What fibres do the cerebral peduncles contain

Answer 15

Large ascending (sensory) and descending (motor) nerve tracts from cerebrum to pons

Question 16

Which part of the pons would motor fibres and sensory fibres from the medial lemniscus occupy

Answer 16

Ventral

Question 17

What fibres make up the pyramid and olive in the medulla

Answer 17

Inferior olivary nucleus on the ventral surface

Question 18

Features of cervical spinal cord

Answer 18

Large white matter
Small grey matter
Long slender posterior horn
Broad massive anterior horn

Question 19

Features of thoracic spinal cord

Answer 19

Large white matter
Small grey matter
Lateral horn
Slender posterior horn and anterior horn

Question 20

Features of lumbar spinal cord

Answer 20

White matter is larger than cervical and thoracic.

Bulbous and short anterior and posterior horn

Question 21

features of sacral spinal cord

Answer 21

White matter less than grey matter

Massive and ovoid posterior horn and anterior horn

Question 22

Which aspect of the spinal cord receives sensory nerve fibres

Answer 22

Dorsal horn

Question 23

From which aspect of the spinal cord do motor nerve fibres project

Answer 23

Ventral root

Question 24

Why does size of the ventral grey horn vary along the spinal cord

Answer 24

Ascending tracts gain fibres at each succession level and the opposite happens for descending.
High levels contain greater amounts of white matter

Question 25

What is the nae of the hole in the middle of the spinal cord an what does it contain

Answer 25

Central canal

CSF