Hindbrain - Anatomy & Physiology
Jump to navigation
Jump to search
This article is still under construction. |
|
Introduction
Includes development and overview of the system (Paragraph format)
Structure and Function
Structures Present | Function | ||
---|---|---|---|
Hindbrain (Rhombencephalon) | Myelencephalon - Medulla Oblongata
Metencephalon - Pons and Cerebellum |
Medulla Oblongata - Cranial nerves, hearing, visceral fibres
Cerebellum - Posture, balance etc |
Medulla Oblongata
Pons
Cerebellum
- The cerebellum:
- Inhibits upper motor neurons
- Co-ordinates movement
Consequences of Cerebellar Pathology
- Cerebellar pathology can result in:
- Hypermetria
- Unconsious proprioceptive deficits
- Increased motor tone on the side of the lesion (in assymetrical damage).
- This gives head tilting AWAY from the damage.
- "A paradoxical vestibular sign".
- This gives head tilting AWAY from the damage.
- Damage to the cerebellum does NOT cause weakness.
Species Differences
- The size of the brain differs between species, but otherwise the structure is quite constant.