Download Lab # 14

BIOL 2101
Lab 14, page 1
Lab # 14 - Brain
Study models and specimens of the brain and be able to identify:
1.
cerebrum*
a. left and right hemispheres*[sheep whole and sagitally sectioned brains]
b. transverse fissure*[sheep whole and sagitally sectioned brains]
c. longitudinal fissure*[sheep whole and frontally sectioned brains]
d. lateral sulcus
e. central sulcus
f. parieto-occiptal sulcus
g. precentral gyrus
h. postcentral gyrus
i. frontal lobe
j. parietal lobe
k. temporal lobe
l. occipital lobe
m. insula
n. cortex*[sheep frontally sectioned brains]
o. internal capsule*[sheep frontally sectioned brains]
p. basal nuclei
q. corpus callosum*[sheep sagittally and frontally sectioned brains]
r. septum pellucidum*[sheep sagittally and frontally sectioned brains]
s. fornix*[sheep sagittally and frontally sectioned brains]
Strong/Fall 2008
BIOL 2101
2.
Lab 14, page 2
diencephalon*
a. pineal body*[sheep sagittally and frontally sectioned brains]
b. thalamus*[sheep sagittally and frontally sectioned brains]
c. massa intermedia*[sheep sagittally and frontally sectioned brains]
d. hypothalamus*[sheep whole and sagittally sectioned brains]
e. infundibulum
f. pituitary gland
g. mammillary bodies*[sheep whole or sagittally sectioned brains]
h. optic chiasma*[sheep whole or sagittally sectioned brains]
3.
brainstem*[sheep whole and sagittally sectioned brains]
a. midbrain*[sheep whole, frontally and sagittally sectioned brains]
b. corpora quadrigemina*[sheep whole, frontally and sagittally sectioned brains]
c. superior colliculi*[sheep whole, frontally and sagittally sectioned brains]
d. inferior colliculi*[sheep whole and sagittally sectioned brains]
e. cerebral peduncles
f. pons*[sheep whole and sagittally sectioned brains]
g. middle cerebellar peduncles
h. medulla oblongata*[sheep whole and sagittally sectioned brains]
i. pyramids
4.
cerebellum*[sheep whole and sagittally sectioned brains]
a. left and right hemispheres*[sheep whole brains]
b. vermis
c. cortex*[sheep frontally sectioned brains]
Strong/Fall 2008
BIOL 2101
Lab 14, page 3
d. arbor vitae (white matter of cerebellum)*[sheep sagittally sectioned brains]
5.
ventricles
a. lateral ventricles*[sheep frontally sectioned brains]
b. interventricular foramina
c. third ventricle*[sheep frontally sectioned brains]
d. cerebral aqueduct*[sheep frontally sectioned brains]
e. fourth ventricle*[sheep sagittally sectioned brains]
f. choroid plexuses
6.
meninges
a. dura mater
b. periosteal layer
c. meningeal layer
d. arachnoid*
e. subarachnoid space
f. pia mater*
g. tentorium cerebelli
h. falx cerebri
7.
cranial nerves
a. olfactory bulbs*
b. olfactory tracts*
c. optic nerve*
d. optic chiasm*
e. roots of nerves III-XII
Strong/Fall 2008
BIOL 2101
Lab 14, page 4
8.
Locate the structures in 1. through 7. that are marked with an * on the sheep
brains.
9.
Locate these structures on sheep brain frontal sections:
a. lateral ventricles
b. septum pellucidum
c. thalamus and massa intermedia
d. corpus callosum
e. third ventricle
f. fornix
g. choroid plexus if visible
h. internal capsule
i. longitudinal fissure
j. cerebral aqueduct
k. superior colliculi
l. cerebral cortex / gray and white matter of cerebrum
Strong/Fall 2008