Introduction to Nervous System

Question 1

What is contained in the 1) white matter 2) grey matter

Answer 1

1) oligodendrocytes and bundles of axons

2) neuron soma + dendrites and glial cells

Question 2

What is the significance of the kink between midbrain and diencephalon?

Answer 2

the orientation of the brain is not in a vertical line, so “dorsal” describes location of two different axis and the kink is where the dividing point is

Question 3

what are the ridges of the cerebrum

Answer 3

gyrus / gyri

Question 4

what are the grooves of cerebrum

Answer 4

sulcus / sulci

Question 5

T/F the lobar organisation shows functional significance

Answer 5

false, the boundaries are very arbitrary

Question 6

Does Brodmann areas show functional significance? How many areas are there?

Answer 6

yes, 52

Question 7

What is the main function of cerebellum?

Answer 7

compares what you want to do with what you are doing. It provides error correction for motor program

Question 8

What is the main function of basal ganglia? What are the three main areas of BG?

Answer 8

initiates voluntary movements, provide basic motor pattern for complex movement to build on
Caudate, putamen, globus pallidus

Question 9

What are the two main functions of hypothalamus?

Answer 9

regulate homeostasis and control pituitary

Question 10

To what spinal segment does the spinal cord terminate?

Answer 10

L1/L2

Question 11

What is falx cerebri? and what is its function?

Answer 11

a strong, arched fold of dura mater that descends vertically in the longitudinal fissure between the cerebral hemispheres

it divides the cerebral hemispheres and has a protective role against trauma

Question 12

What is the tentorium

Answer 12

an extension of the dura mater that separates the cerebellum from the inferior portion of the occipital lobe