4.3 Brainstem, Cerebellum

Question 1

Brainstem

Hindbrain: brainstem + cerebellum

Answer 1

• medulla
• pons
• cerebellum

Question 2

Medulla (oblongata):middle, also a bridge for nerve fibers, therefore manages functions _______

Answer 2

• located just above spinal cord
• contains large bundles of nerve fibers travelling to and from higher levels of the brain
• manages functions essential to life: heart rate, breathing, BP

Question 3

Pons

Answer 3

• “bridge”; above the medulla
• connects cerebellum to rest of the brain
• nuclei for cranial nerves
• involved with management of sleep, arousal, and facial expressions

Question 4

Cerebellum:one of the first structures affected by alcohol

Answer 4

• maintains balance and motor coordination
• • makes mental and motor skills more automatic
• contains more nerve cells than rest of the brain combined
• richly connected with rest of CNS

Question 5

Midbrain: middle of brain and _____
underneath brain, therefore important in M____

Answer 5

• above the pons
• involved in sensory reflexes, movement, and pain

Question 6

Posterior side of midbrain
- 4 bumps of 2 paired structures:

Answer 6

superior colliculi: eye movement, visual processing

inferior colliculi: auditory processing

VTA: major dopamine producing nuclei

Question 7

Reticular formation
(think r - circadian rhythm, sleep)

Answer 7

collection of brainstem nuclei and neurons along midline of brainstem

• vital survival functions: mood, arousal, sleep

Question 8

Brainstem

Answer 8

• midbrain
• pons
• medulla
• spinal cord