MED4008
MED4008 Week 5 Brainstem
Midbrain • Communicates with thalamus
Ventral
Crus cerebri
(Cerebral peduncle) Interpeduncular fossa
(III) Oculomotor nerve
[Emerge from medial of crus cerebri]
Dorsal
Thalamus
Superior Colliculus
Inferior Colliculus
Pineal Gland
Trochlear nerve (IV)
Transverse
Red Nucleus
Ventral
Crus cerebri Crus Cerebri
(Cerebral peduncle)
Substantia Nigra
Tegmentum
Tectum Cerebral Aqueduct
Dorsal Colliculi
[Superior + inferior]
Upper --------------------------- Internal Structure --------------------------- Lower
The Level of Superior Colliculus The Level of Inferior Colliculus
Trochlear nucleus
Superior Colliculus
Oculomotor nucleus Inferior Colliculus
DCML DCML
[medial lemniscus
Red nucleus move to lateral
sides of
tegmentum]
CST
CST
Decussation of superior cerebellar peduncle
1
MED4008 Week 5 Brainstem
Midbrain • Communicates with thalamus
Ventral
Crus cerebri
(Cerebral peduncle) Interpeduncular fossa
(III) Oculomotor nerve
[Emerge from medial of crus cerebri]
Dorsal
Thalamus
Superior Colliculus
Inferior Colliculus
Pineal Gland
Trochlear nerve (IV)
Transverse
Red Nucleus
Ventral
Crus cerebri Crus Cerebri
(Cerebral peduncle)
Substantia Nigra
Tegmentum
Tectum Cerebral Aqueduct
Dorsal Colliculi
[Superior + inferior]
Upper --------------------------- Internal Structure --------------------------- Lower
The Level of Superior Colliculus The Level of Inferior Colliculus
Trochlear nucleus
Superior Colliculus
Oculomotor nucleus Inferior Colliculus
DCML DCML
[medial lemniscus
Red nucleus move to lateral
sides of
tegmentum]
CST
CST
Decussation of superior cerebellar peduncle
1