Intro to CNS anatomy

Question 1

What do the following primary brain vesicles develop into?
Prosencephalon
Mesencephalon
Rhombencephalon

Answer 1

Prosencephalon: Telencephalon and Diencephalon

Mesencephalon: Mesencephalon

Rhombencephalon: Metencephalon and Myelencephalon

Question 2

What do these 5 secondary brain vesicles go onto form in the adult brain?
Telencephalon 
Diencephalon
Mesencephalon
Metencephalon 
Myelencephalon

Answer 2

Telencephalon - cerebral hemispheres
Diencephalon - thalamus and hypothalamus
Mesencephalon - Midbrain
Metencephalon  - Cerebellum and pons
Myelencephalon - Medulla

Question 3

What is the corpus collosum?

Answer 3

White matter tract - links right and left hemispheres, intersects with corona radiata

Question 4

What do the pre-central and post-central gyrus contain?

Answer 4

Pre-central gyrus - primary motor cortex

Post central gyrus - primary somatosensory cortex

Question 5

What does the pre-frontal cortex control?

Answer 5

Emotional behavious, processes, decision making, flat personality, memory

Question 6

What can result as an injury to the premotor and supplementary motor cortex?

Answer 6

Ideomotor apraxias - patient cannot act out a movement

Question 7

In general, the left and right side of the brain, look after the opposite side of the body. However, what are some things which are side specific?

Answer 7

Left: Bilateral audio, speech, writing, language
Right: Bilateral audio, spatial recognition, facial recognition

Question 8

What are association, commisural and projection fibres, what do they connect?

Answer 8

Association fibres (within a hemisphere)
Commisural fibres (between hemispheres)
Projection fibres (to brainstem/spinal cord)

Question 9

What is Broca’s area involved in?

Answer 9

Production/ motor planning involved in speech

Question 10

What is Wernicke’s area involved in?

Answer 10

Comprehension/ understand speech