Brainstem Vocab

Question 1

Suture

Answer 1

Immobile joints where pieces of the skull connect

Question 2

Brainstem

Answer 2

Comprised of the Medulla Oblongata, Pons, and midbrain

Question 3

Pyramid

Answer 3

Series of descending corticospinal fibers

Question 4

Decussation of the Pyramid

Answer 4

Point where the lateral corticospinal fibers cross over to the contralateral side

Question 5

Medulla

Answer 5

Autonomic functions (respiration, circulation, digestion)

Question 6

Pons

Answer 6

-Bridge that connects the medulla oblongata to the midbrain
-Relays info between brasin hemisphere
-Entry/exit for cranial nerves
-Houses cochlear and vestibular nuclei and SOC

Question 7

Reticular Formation

Answer 7

-Influences autonomic nervous system, endocrine function, biological rhythm
-Arousal and activation
-Modulate muscles tone and reflexes through skeletal muscle

Question 8

Cerebellar Peduncles

Answer 8

Connects cerebellum to the brainstem and cerebrum

Question 9

Cortex of the Vermis (CP)

Answer 9

Influences movements of the neck, shoulders, thorax, abdomen, and hips

Question 10

Intermediate Zones (CP)

Answer 10

Influence movement of the distal limbs (hands and feet)

Question 11

Lateral Zones (CP)

Answer 11

Planning sequential moves of the body (speech)

Question 12

Spinocerebellar Tract

Answer 12

Provides info from peripheral effectors (neuromuscular spindles)

Question 13

Vestibulospinal Tract

Answer 13

Cereb outputs to vestibular nucleus which influences effectors through the SC

Question 14

Auditory Brainstem Response

Answer 14

Evoked electrical potential generated by the auditory nerve and structures of the auditory brainstem