Cerebellum & 4th ventricle Flashcards
What is the cerebellum involved in?
Coordination of movement
balance
What is the name of the midline of the cerebellum that joints the ovoid hemispheres together?
Vermis
What does the over layer of the vermis consist of?
Grey matter
What does the inner core of the vermis consist of?
White matter with deep nuclei
What is the name of the transverse curving fissure which give the cerebellum their individual ridges?
Folia
What are folia on the cerebellum?
Transverse curving fissures which give the cerebellum their individual ridges
Where does the cerebral aqueduct run?
Through the midbrain
What does the cerebral aqueduct connect?
The 3rd and 4th ventricle
Where are the substantia nigra located?
on each of the cerebral peduncles
loss of substantial nigra = in what disease?
Parkinson
What is the substantia nigra?
black band of nerve cells in the tegmentual area
What is the red nucleus?
circular mass of grey area located in the tegmentum next to the substantia nigra
What are the tonsil in the brain?
prominent red swelling of the cerbellar cortex located on either side of the vermis
What is the flocculus?
ovoid in shape with crinkled edge
lie posterior to the lateral foramen of 4th ventricle
What is the nodule located in the cerebellum?
continuation of the flocculus
What is the flocculo-nodular lobe concerned with
vestibular information from the ear
What is the name of the largest deep cerebellar nuclei?
Dentate nucleus
What is the dentate nucleus important in?
Planning, initiating and control of movement
What is the rhomboid fossa?
diamond shaped floor of the 4th ventricle
What are the names of the 2 tubercles located on the dorsal column nuceli?
Gracile and cuneate
What does the median sulcus divide?
The rhomboid fossa into left and right halves
What lie in the floor of the 4th ventricle?
Nuclei of the lower cranial nerves
What is the obex?
Inferior apex of the rhomboid fossa
What is the area postrema associated with?
Nausea control
What does the area postrema lack?
a blood brain barrier
What will injury to the cerebellum cause?
Loss of coordination (NOT MOVEMENT)
What does the outer grey matter contain?
nuclei and ganglia (cell bodies)
What does the inner white matter contain?
axons
What does the superior cerebellar peduncle do?
Rely information back to the midbrain
What does the middle cerebellar peduncle do?
information from the cerebellar to the pon
What does the inferior cerebellar peduncles do?
Connects the cerebellum to the medulla
what is the job of the corpus callosum?
communicating between the 2 hemispheres
What is the posterior end of the corpus callosum called?
splenium
What is the job of the splenium?
Part of the visual pathway
What does the diancepalon contain?
The thalamus and hypothalamus
What is located between the 2 halves of the diancephalon?
the 3rd ventricle
What is the job of the intraventricular foramen?
permits CSF flow from the lateral ventricles to the 3rd ventricle
What does the 4th ventricle continue with?
the spinal cord
Which parimary cortex and a 2x thicker grey matter?
The priamry motor cortex
What are the names of the 2 primary cortexes in the brain?
The primary visual cortex
the primary somatosensory cortex
Where does the central sulcus run?
The midpoint of the hemispheres to the medial surface
What shape does the paracentral cortex form?
U shape
What sulcus runs above the corpus callosum?
The cingulate sulcus
What does the cingulate sulcus seperate?
the cingulate gyrus
Whta cortex lies in the wall of the calcarine sulcus
the primary visual cortex
What is the fornix?
bundle of white matter beneath the corpus callosum
What does the fornix connect?
the hippocampus to the opposite hemispheres
What forms the dorsal part of the diencephalon
the thalamus
What forms the ventral part of the diencephalon
the hypothalamus
What info does the medial geniculate body relay?
Auditory information
What info does the lateral geniculate body relay?
visual information
