Hindbrain Rhombencephalon

Question 1

What are the components of the Hindbrain (Rhombencephalon)

Answer 1

Cerebellum

Pons

Medulla Oblongata

Question 2

What is the cerebellum and its major function?

Answer 2

Cerebellum (Metencephalon)

• Responsible fine tuning of movement
• Assists in maintaining posture and balance by controlling muscle tone and the positioning of extremities in space.

Controls the ability for controlling rapid alternating movements.

-The cerebellum is responsible for coordination and motor behavior, in addition to balance, motor learning, and motor control.-

Question 3

What are the divisions of the cerebellum

Answer 3

• Anterior
• Posterior
• Flocculonodular

[the fourth ventricle lays anterior to the lobes]

Question 4

What are the deficits to the cerebellum?

Answer 4

Damage to one side of the cerebellum produces ipsilateral impairments to the body.

Ataxia
Nystagmus
Tremor
Hypermetria
Poor Coordination

Deficits to Postural Reflexes: Balance and Equilibrium depending on lesion location

Question 5

What is the Pons and its major functioning?

Answer 5

(also metencephalon)

• Assists in regulation of Respiration Rate
• Is associated with orientation of the head with with visual and auditory stimuli.

Question 6

What is the Medulla Oblongata and its major functions?

Answer 6

(Myelencephalon)

• Composed of white matter on the surface and gray matter interiorly.
• influences ANS, regulation of Respiration and HR (Respiration Rate also influenced by the Pons)

Question 7

What Cranial Nerves Originate off of the Medulla Oblongata?

Answer 7

CN:
- IX
- X
- XI
- XII

[9 - 12]

Question 8

What Cranial Nerves Originate of the Pons

Answer 8

CN
- V
- VI
- VII
- VIII

[5 - 8]

Question 9

What Reflex Centers can be found in the Medulla Oblongata?

Answer 9

Reflex Centers for:
- Vomiting
- Coughing
- Sneezing