Transections of Brainstem Flashcards
1
Q
Which part of the brain is this?
What are the identifying features?
A
Identified by the
- Mickey mouse shape
- Aqueduct
- Substantia niagra
2
Q
A
3
Q
A
4
Q
A
5
Q
A
6
Q
Which part of the brain is this?
What are the identifying fetures?
A
IT is the Pons
–> idenfified by the transverse fibres
7
Q
A
8
Q
A
9
Q
A
10
Q
What is the cause of Lateral Medullary Syndrome?
A
Thrombosis of vertebral artery or PICA
11
Q
What are the symptoms of the lateral medullary syndrome?
Why?
A
- 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)
12
Q
A
13
Q
A
14
Q
A
15
Q
A
16
Q
A
17
Q
Where is this transection of the brainstem taken from?
What are the identifying features?
A
Upper Medulla
Just a lot going on
- pyramids as identifying feature
- inferior olivary nucleus
- 4th ventricle
18
Q
A
19
Q
A
20
Q
A
21
Q
Which part of the brain is this?
What are the identifying features?
A
It is the lower Medulla
- Round shape
- See the dorsal columns
- pyramidal decussation
22
Q
A
23
Q
A
24
Q
A
26
Q
What is the denticulate ligement?
A
the denticulate ligaments
- ligaments in the spinal chord, anchoring the pia to the dura matera and separating motor and sensory parts
27
Q
Why are the substantia nigra black?
A
because they produce neromelanin (as part of the dopamine metabolism)
