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Bio 221 - Lab 7
Central Nervous System
I. Central Nervous System - Brain:
A. Sheep Brain Dissection - superficial anatomy
 Sulci (singular = sulcus)
 Gyri (singular = gyrus)
 Pia mater
 Longitudinal fissure
 Transverse fissure
 Cerebrum
 Frontal lobe
 Parietal Lobe
 Temporal lobe
 Occipital lobe
 Cerebellum
 Corpora quadrigemina
 Superior colliculi (singular = colliculus)
 Inferior colliculi (singular = colliculus)
 Pineal body or pineal gland
 Olfactory bulb
 Pituitary gland
 Optic chiasma
 Mammillary body
 Cerebral peduncle
 Pons
 Medulla oblongata
 Spinal cord
 Cranial Nerves (Know the name, number & function of each)
 Optic Nerve II
 Oculomotor Nerve III
 Trigeminal Nerve V
 Abducens Nerve VI
 Spinal Accessory Nerve XI
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B. Sheep Brain Dissection – sectional anatomy
 Cerebrum
 Corpus callosum
 Fornix
 Septum pellucidum
 Lateral ventricle
 Thalamus
 Optic chiasma
 Hypothalamus
 Mammillary body
 Pineal gland/body
 Corpora quadrigemina
 Superior colliculi/colliculus
 Inferior colliculi/colliculus
 Cerebral aqueduct
 Fourth ventricle
 Cerebellum
 Arbor vitae
 Cerebral peduncle
 Pons
 Medulla oblongata
 Spinal cord
C. Human Brain Models
 Sulci/sulcus
 Gyri/gyrus
 Longitudinal fissure
 Transverse fissure
 Lateral fissure
 Central sulcus
 Cerebrum
 Corpus callosum
 Fornix
 Septum pellucidum
 Thalamus
 Massa intermedia/Intermediate mass
 Optic chiasma
 Hypothalamus
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Infundibulum
Pituitary gland
Mammillary body
Choroid plexus
Pineal gland/body
Corpora quadrigemina
Cerebral aqueduct
Fourth ventricle
Cerebellum
 Arbor vitae
 Cerebral peduncle
 Pons
 Medulla oblongata
 Spinal cord
D. Model of Ventricles
 Lateral ventricle(s)
 Third ventricle
 Cerebral aqueduct
 Fourth ventricle
E. Dural folds/septa
 Falx cerebri
 Tentorium cerebelli
II. Central Nervous System – Spinal Cord:
A. Conus medullaris
B. Filum terminale
C. Cauda equina
D. White matter
E. Gray matter
 Dorsal gray horn
 Ventral gray horn
 Lateral gray horn
 Gray commissure
F. Central canal
G. Epidural space
H. Dura mater
I. Subdural space
J. Arachnoid
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K. Subarachnoid space
L. Pia mater
M. Ventral root
N. Dorsal root
O. Dorsal root ganglion
P. Spinal Nerve
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