Midbrain

Question 0

Tectum

Answer 0

• part of sensory pathways to brain
• latin for “roof”
• It is responsible for auditory/visual reflexes, like jumping when someone slams a door
• consists of SUPERIOR COLLICULUS (Vision - including for Blindsight) and INFERIOR COLLICULUS (Audition)

Question 1

Midbrain

Answer 1

• central structures about Hindbrain
• includes the tectum and tegmentum
• portion of the central nervous system associated with vision, hearing, motor control, sleep/wake, arousal (alertness), and temperature regulation
• proportionally large and more important in simpler brains

Question 2

Tegmentum

Answer 2

• latin for “covering” or “rug
• Major motor pathways
• lies below Tectum
• includes RED NUCLEUS and SUBSTANTIA NIGRA w/Dopaminergic neurons that degenerate in Parkinson’s Diesease
• contains cranial nerves III and IV (controlling eye movements) - also part of Reticular Formation for arousal

Question 3

Superior Colliculus

Answer 3

Vision - including for Blindsight

Question 4

Inferior Colliculus

Answer 4

Audition