00:00 / 00:00
Ascending and descending spinal tracts
Blood brain barrier
Nervous system anatomy and physiology
Neuron action potential
Sympathetic nervous system
Parasympathetic nervous system
Enteric nervous system
Basal ganglia: Direct and indirect pathway of movement
Body temperature regulation (thermoregulation)
Hunger and satiety
Muscle spindles and golgi tendon organs
Pyramidal and extrapyramidal tracts
Sensory receptor function
0 / 29 complete
cerebellar hemisphere lesions p. 526
paraneoplastic cerebellar degeneration and p. 219
paraneoplastic p. 219
with small cell carcinoma p. 705
hemisphere p. 526
lateral p. 511
medial p. 511
vermis lesions p. 526
development of p. 500
input/output of p. 511
thalamic connections p. 509
tonsils p. 502
cerebellar lesions and p. 511
cerebellar lesions p. 526
cerebellum p. 511
of cerebellum p. 206
in paraneoplastic cerebellar degeneration p. 219
Cerebellum literally means little brain - and it looks like a miniature version of the brain, or cerebrum.
The cerebellum coordinates movements, controls posture, balance and fine motor movement, and is involved in motor learning - like learning how to ride a bicycle.
The cerebellum sits in the posterior part of the skull called the posterior cranial fossa.
Above it are the occipital and temporal lobes of the brain. It’s separated from the brain by a fibrous membrane called the tentorium cerebelli - a fold of dura matter which is one of the layers called meninges that covers the brain and spinal cord.
The cerebellum lies posterior to the brainstem and is attached to it by a stalk of tissue divided into three parts - the superior, middle, and inferior peduncles.
These peduncles contain nerve axons going back and forth between the cerebellum and the brain, the internal ear, and the spinal cord via the brainstem.
The cerebellum consists of two hemispheres separated by a narrow, ridge in the middle called the vermis.
Now if we look at a cross-section, we can see three lobes.
We have the anterior lobe superiorly, and it is separated from the posterior lobe by the primary fissure.
At the tip of the posterior lobe is a very tiny lobe called the flocculonodular lobe and these two are separated by the posterolateral fissure.
The outer layer of the cerebellum is called the cortex and it’s folded into many tiny wrinkles called folia. These are much smaller than the wrinkles found on the cerebrum, and this allows it to have a larger surface area when unfolded even though it occupies only 10% of the brain volume.
The cerebellum is a part of the brain that lies at the back of the head, beneath the cerebrum. It plays an important role in controlling movement and balance. Damage to the cerebellum can lead to problems with movement and balance. The cerebellum contains many Purkinje cells, which are responsible for processing information related to movement and balance from other parts of the brain. Damage to these cells can lead to problems with movement and balance.
The cerebellum also contains deep nuclei, which are responsible for processing information from other parts of the brain related to movement and balance. These nuclei include the dentate nucleus, the interposed nuclei, which comprise the globose and emboliform nuclei, and the fastigial nucleus. Damage to these nuclei can lead to problems with movement and balance.
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