ANAT 321

REVIEW

LABORATORY 1 & 2

NEUROANATOMY LAB

BRAINSTEM VENTRAL VIEW MIDBRAIN

medulla

pons

midbrain

BRAINSTEM VENTRAL VIEW MIDBRAIN

medulla

pons

midbrain

Cerebral peduncleCN 3

CN 5CN 6

Pyramid

CN 9

CN 8CN 7

CN 10

Inferior olive

BRAINSTEM VENTRAL VIEW MIDBRAIN

medulla

pons

midbrain

BRAINSTEM VENTRAL VIEW MIDBRAIN

medulla

pons

midbrain

Cerebral peduncleCN 3

CN 5CN 6

Pyramid

CN 9CN 8

CN 7

CN 10Inferior olive

REVIEW: LAB 1 &2

• Question– Which cranial nerve

exits superior to the pyramids at the level of the pons?

• Answer– The CN6

BRAINSTEM DORSAL VIEW w/ out cerebellum

BRAINSTEM DORSAL VIEW w/ out cerebellum

Superior colliculus

Middle cerebellar peduncle

Inferior cerebellar peduncle Nucleus gracilis

Nucleus cuneatus

4th ventricle

inferior colliculus

REVIEW: LAB 1&2

• Question– Which cranial nerves lies behind

inferior olives?

• Answer– CN 9 &10

REVIEW: LAB 1 &2

• Question– What is the relationship between the

cerebral peduncles and the pyramids?

HEMISPHERESSAGITTAL VIEW

HEMISPHERESSAGITTAL VIEW

thalamus

septum pellicudum

Anterior commissure

Lamina terminalis

mamillary body

optic chiasm

aqueduct

4th ventricle

HEMISPHERESSAGITTAL VIEW

HEMISPHERESSAGITTAL VIEW

3rd ventricle

fornix

Corpus callosum

hypothalamus

infundibulum

REVIEW: LAB 1 & 2

• Be sure that you understand the shape of the fornix

• Answer– The fornix is a white

matter fiber intra-hemispheric structure that connects the hippocampus to the mammillary bodies hippocampi

BRAINSTEM DORSAL VIEW w/ out cerebellum

BRAINSTEM DORSAL VIEW w/ out cerebellumSuperior colliculus

Superior cerebellar peduncle

Middle cerebellar peduncle

Inferior cerebellar peduncle Nucleus gracilis

Nucleus cuneatus

4th ventricle

Medial geniculate nucleus

Pulvinarinferior colliculus

brachium

BRAINSTEM DORSAL VIEW w/ out cerebellum

BRAINSTEM DORSAL VIEW w/ out cerebellumSuperior colliculus

Superior cerebellar peduncle

Middle cerebellar peduncle

Inferior cerebellar peduncle

Nucleus cuneatus

4th ventricle

inferior colliculus

brachium

Pulvinar

REVIEW: LAB 1 & 2

• Which cerebellar penduncle connects the pons to the cerebellum?

• Answer– The cerebellum is attached to the

pons through the middle cerebellar peduncle

TRANSECTED MIDBRAIN

TRANSECTED MIDBRAIN

Cerebral aqueduct

Substantia nigra

Cerebral peduncles

Red nucleus

QUIZ

A

B

C

D

Answer Key

– A: CN 3– B: Pons– C:CN 6– D: CN 12

A

B

C

D

Answer Key

– A: cerebral aqueduct– B: substantia nigra – C: cerebral peduncle– D: red nucleus

A

B

C

D

E

Answer Key

– A: brachium of the inferior colliculus– B: superior cerebellar penduncle– C: inferior cerebellar peduncle– D: nucleus cuneatus– E: inferior colliculus

AB

C

D

E

Answer Key

– A: septum pellucidum– B: fornix– C: fourth ventricle– D: hypothalamic sulcus– E: lamina terminalis

AB

C

D

Answer Key

– A: superior colliculus– B: inferior colliculus– C: nucleus gracilis– D: pulvinar