Learning Outcomes and Notes 12.1

The brain grows faster than surrounding membranous skull, so it must fold to occupy available space
– Forebrain moves toward brain stem (midbrain, pons, medulla oblongata)
– Cerebral hemispheres double back and envelop diencephalon and midbrain while creasing and folding to increase surface area

Describe how space constraints affect brain development

• Adult brains have four regions:

1. Cerebral hemispheres

2. Diencephalon

3. Brain stem, consisting of:

   • Midbrain

   • Pons

   • Medulla oblongata

4. Cerebellum

Name the major regions of the adult brain.

lateral ventricles, third ventricle, and fourth ventricle

What is the name of the ventricles of the brain?

located deep in each cerebral hemisphere

Where is the lateral ventricle located?

lies in the diencephalon

Where is the third ventricle located?

lies in the hindbrain

Where is the fourth ventricle located?