7.1 CNS Organization

Question 1

Cortical is

Answer 1

Home of the conscious mind, everything you’re aware of

Question 2

Subcortical functions are

Answer 2

Subconscious

Question 3

Outer portion of the brain

Answer 3

Cerebral cortex (cerebrum), two hemispheres, cortical functions (conscious processing)

Question 4

Subcortical regions

Answer 4

Diencephalon
- thalamus and hypothalamus

Brain stem
- midbrain (mesencephalon)
- pons
- medulla oblongata

Limbic system (emotions)
& basal ganglia (decision making)

Spinal cord

Question 5

Ventricles

Answer 5

Pockets of CSF in the brain

Question 6

CSF is

Answer 6

• produced from blood (choroid plexus)
• circulates CNS through subarachnoid
• vol. doesn’t change (converts back to blood)

Question 7

Membranes around the brain

Answer 7

Meninges

Question 8

Name the meninges

Answer 8

Periosteum (bone):

Dura Mater (tough, thick collagen)
No space but blood vessels (subdural)
Arachnoid Mater (spacey, CSF inside)
Pia Mater (deepest, against brain folds)

Question 9

Diffusion tensor imaging

Answer 9

Shows white matter activity in the brain (colorful)

Question 10

Contralateral Processing

Answer 10

• left side of body controlled by right brain
• right side controlled by left brain
• information must cross over

Question 11

Left side of brain responsible for

Answer 11

Language, math, and logic

Question 12

Right side of brain responsible for

Answer 12

Emotions, patterns, intuition, and music

Question 13

Corpus callosum

Answer 13

Connects the two hemispheres, split brain