Coronal Sections of the Brain

Question 1

What are the three sections that the brain can be divided into?

Answer 1

Anterior, middle and posterior

Question 2

Where is the anterior section?

Answer 2

In the coronal plane that passes just anterior to the optic chiasma

Question 3

Where is the middle section?

Answer 3

In the coronal plane that passes just posterior to the optic chiasma

Question 4

Where is the posterior section?

Answer 4

In the coronal plane that passes through the selenium (posterior part) of the corpus callosum

Question 5

List the features that can be used to identify the cervical region of the spinal cord

Answer 5

Wide
Oval
Less grey and more white mater

Question 6

List the features that can be used to identify the thoracic region of the spinal cord

Answer 6

Wide
Oval
Lateral horns in grey mater

Question 7

List the features that can be used to identify the lumbar region of the spinal cord

Answer 7

Circular
Lot of grey mater
Some white mater

Question 8

List the features that can be used to identify the sacral region of the spinal cord

Answer 8

Circular
Lots of grey mater
Very little white mater

Question 9

Which aspect of the spinal cord do motor nerve fibres project?

Answer 9

Grey mater (dorsal horn)

Question 10

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

Answer 10

White mater (ventral horns)

Question 11

Why does the size of the ventral grey horn vary along the spinal cord (mostly in cervical and lumbar region)?

Answer 11

As some areas may go to form a plexus (e.g the brachial or the lumbar plexus)

Question 12

What is the name of the hole in the middle of the spinal cord and what does it contain?

Answer 12

Central canal