Transections of Brainstem Flashcards
Which part of the brain is this?
What are the identifying features?
Identified by the
- Mickey mouse shape
- Aqueduct
- Substantia niagra
Which part of the brain is this?
What are the identifying fetures?
IT is the Pons
–> idenfified by the transverse fibres
What is the cause of Lateral Medullary Syndrome?
Thrombosis of vertebral artery or PICA
What are the symptoms of the lateral medullary syndrome?
Why?
- Vertigo (Vestibular nucleus)
- Ipsilateral cerebellar ataxia
- Ipsilateral loss of pain/thermal sense (face) (
- Horner’s syndrome (sympathetic tract)
- Hoarseness, difficulty in swallowing (nucleus ambiguous)
- Contralateral loss of pain/thermal sense (trunk and limbs) (spinothalamic tract)
Where is this transection of the brainstem taken from?
What are the identifying features?
Upper Medulla
Just a lot going on
- pyramids as identifying feature
- inferior olivary nucleus
- 4th ventricle
Which part of the brain is this?
What are the identifying features?
It is the lower Medulla
- Round shape
- See the dorsal columns
- pyramidal decussation
What is a nerve?
A bundle of neurons
What is the denticulate ligement?
the denticulate ligaments
- ligaments in the spinal chord, anchoring the pia to the dura matera and separating motor and sensory parts
Why are the substantia nigra black?
because they produce neromelanin (as part of the dopamine metabolism)
