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Brain's Embryonic Regions
UCCS Bio 2010 Lykins- Lab Practical 4, Ex. 17
10
Anatomy
Undergraduate 1
12/07/2013

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Term
The embryonic regions of the brain all stem from
Definition
the neural tube
Term
The 3 major regions are called ____, and they are:
Definition
the primary brain vesicles
1. prosencephalon (forebrain)
2. mesencephalon (midbrain)
3. rhombencephalon (hindbrain)
Term
The subdivisions are called ____, and they are:
Definition
the secondary brain vesicles
1. telencephalon and diencephalon
2. the midbrain has none
3. metencephalon and myelencephalon
Term
The brain begins to form by _____ as an expansion of which end of the neural tube?
Definition
the fourth week

anterior
Term
The telencephalon forms which brain structures and which canal region?
Definition

Cerebrum (hemispheres, cortex, medulla), cerebral dividers (gyri, sulci, and fissures), lobes (frontal, parietal, temporal, occipital, insula), corpus callosum, and basal nuclei

lateral ventricles

Term
The diencephalon forms which brain structures and which canal region?
Definition
thalamus, hypothalamus, epithalamus, pineal gland, mammillary bodies, pituitary gland, infundibulum, optic nerve, optic chiasma, optic tract, fornix, olfactory bulbs and tracts

3rd ventricle
Term
The mesencephalon forms which brain structures and which canal region?
Definition
midbrain of the brain stem: corpora quadrigemina (superior and inferior colliculi); cerebral peduncles

cerebral aqueduct (part of midbrain of brain stem)
Term
What brain structures and canal region does the metencephalon form?
Definition
Cerebellum (arbor vitae, vermis), pons

4th ventricle
Term
What brain structures and canal region does the myelencephalon form?
Definition
medulla oblongata of the brain stem

4th ventricle
Term
The remainder of the neural tube becomes the
Definition
spinal cord
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