NESC/BIOL 4030 Lab Exam 1 Structures Review

Dorsal view (of brain covered with dura mater):

• Left vs. right sides

(Rostral vs. caudal axis)

Ventral view:

• Tissue surrounding olfactory bulbs

• Tissue surrounding optic nerves

• Optic chiasm

• Pituitary gland

• Capillary beds

*Notice which side is right and which is left!

(Rostral vs. caudal axis)

Lateral view:

• Trigeminal nerve (V)

(Dorsal vs. ventral axis)

(Rostral vs. caudal axis)

Dorsal view:

• Sulcus vs. gyrus

• Longitudinal fissure

• Transverse fissure

• Cerebellum

(Rostral vs. caudal axis)

(Left vs. right side)

Dorsal view:

• Cerebellum

• Occipital lobe

• Parietal lobe

• Cruciate/ansate sulcus

• Frontal lobe

• Olfactory bulbs

(Rostral vs. caudal axis)

Lateral view:

• Spinal cord

• Medulla

• Pons

• Pyriform lobe

• Rhinal fissure

• Optic nerve

• Olfactory bulb

• Insula

(Dorsal vs. ventral axis)

(Rostral vs. caudal axis)

Caudal view (cerebrum and cerebellum pulled apart):

• Superior colliculi

• Inferior colliculi

• Corpora quadrigemina (part of midbrain tectum)

Caudal view (separating superior colliculi from cerebrum to reveal pineal body):

• Pineal body

• Superior colliculus

Caudal view (separating cerebellum from medulla to reveal 4th ventricle):

• Cerebellum

• 4th ventricle

• Medulla

• Spinal cord

Ventral view:

• Olfactory bulb (I)

• Optic nerve (II)

• Optic chiasm

• Optic tract

• Oculomotor nerve (III)

• Trigeminal nerve (V)

• Abducens nerve (VI)

(Rostral vs. caudal axis)

Ventral view:

• Olfactory bulb (I)

• Olfactory tract

• Pyriform area

Ventral view:

• Infundibulum (removed)

• Mammillary body

• Cerebral peduncles (part of midbrain)

• Pons

• Trapezoid body

• Medulla

• Pyramids (part of medulla)

• Spinal cord

Midsagittal view:

• Cingulate gyrus

• Hippocampal formation

• Fornix

• Mammillary body

• Optic chiasm

Midsagittal view:

• Arbor vitae of cerebellum

• Superior colliculus

• Inferior colliculus

• Spinal cord

• Medulla

• Pons

• Midbrain

Midsagittal view:

• Corpus callosum

• Pineal body

• Thalamus (massa intermedia)

• Hypothalamus

Midsagittal view:

• Lateral ventricle (septum pellucidum)

• Lateral ventricle (space)

• Cerebral aqueduct

• 4th ventricle

• 3rd ventricle

Coronal section 1:

• Cingulate gyrus

• Corona radiata

• Corpus callosum

• Lateral ventricle

• Head of the caudate nucleus

Coronal section 2:

• Cingulate gyrus

• Corona radiata

• Corpus callosum

• Lateral ventricle

• Head of the caudate nucleus

• Septum pellucidum

• Optic chiasm

Coronal section 3:

• Cingulate gyrus

• Corona radiata

• Corpus callosum

• Lateral ventricle

• Head of the caudate nucleus

• Putamen

• Anterior commissure

• Internal capsule

• Globus pallidus

• Optic chiasm

Coronal section 4:

• Cingulate gyrus

• Corona radiata

• Corpus callosum

• Lateral ventricle

• Tail of caudate nucleus

• Fornix

• Putamen

• 3rd ventricle

• Optic chiasm

Coronal section 5:

• Cingulate gyrus

• Corpus callosum

• Lateral ventricle

• Fornix

• Thalamus

• 3rd ventricle

• Amygdala

• Hypothalamus

Coronal section 6:

• Cingulate gyrus

• Corpus callosum

• Lateral ventricle

• Fornix

• Hippocampus

• 3rd ventricle

• Thalamus

Coronal section 7:

• Cingulate gyrus

• Corpus callosum

• Lateral ventricle

• Hippocampus

• Thalamus

• Mammillary body

Coronal sections 8 & 9:

• Superior colliculus

• Cerebral peduncle

• Cerebral aqueduct

Ventral view:

Removal of the dura

Midsagittal view:

Left vs. right hemisphere

(Dorsal vs. ventral axis)

Coronal sections of the sheep brain (i.e., Where is dorsal vs. ventral? Where is left vs. right hemisphere?)

Arranged as brain is section from rostral end to caudal end

Laid out dorsal to ventral (right sight-up)

Right hemisphere is on left, left hemisphere is on right

Hippocampal dissection:

• Caudate nucleus (damaged in the image)

• Fimbria (of the fornix)

• Hippocampus

Cervical spinal cord (C3)

Thoracic spinal cord (T6)

Lumbar spinal cord (L6)

Sacral spinal cord(S4)

Coccygeal spinal cord