Neurology 2 Flashcards
name the three parts which make up the brain stem
- mid brain
- pons
- medulla
what are the three main functions of the brain stem?
- pathway of fibre tracts running between higher and lower centres
- innervates head and neck via 10/12 cranial nerves
- produces rigidly programmed autonomic behaviours
what ventricle is in the medulla ?
4th ventricle
how is the medulla attached to the cerebellum ?
inferior cerebellum peduncle
what cranial nerves originate from the medulla ?
IX, X, XI, XII
what structures are formed from the hind brain?
medulla
pons
cerebellum
where do nerves cross over to the opposite side of the nervous system?
at the medulla
in what structures do the nerves flow down the medulla?
the pyramids
what happens if there is a lesion on the nervous tract is above the medulla ?
both sensory and motor neurons for the oppsoite side of the lesion is lost
what happens if there is a lesion on the nervous tract is below the medulla ?
the sensory will be lost on the opposite side but the motor on the same side will be lost
through which foramen does the spinal cord pass through the cranium?
foramen magnum
what happens if there is a lesion on the nerves is below the spinal cord ?
sensory and motor loss from the same side as the lesion
what attaches the pons to the cerebellum?
middle cerebellar peduncle
what cranial nerves come for the pons?
5, 6, 7, 8
what cranial nerves come from the medulla?
9, 10, 11, 12
what ventricle is found behind the pons?
4th ventricle
what are the three main parts of the brain stem?
mid brain
pons
medulla
what ventricle is found in the mid brain?
cerebral aqueduct
what structure connects the mid brain and the cerebellum ?
superior cerebellar peduncle
what are the four pea shaped structures on the back of the mid brain called?
superior and inferior colliculi