Question

Write difference b/w Cerebrum and Cerebellum.Explain with examples.AND also explain in detail...

Answer 1

Cerebrum is the center of intelligence, memory , emotions , etc whereas cerebellum is the centre of body postures, movements.

Cerebrum occupies most of the area of the brain bjt cerebellum occupies less area of brain than cerebrum.

Cerebrum is located at the top part of the brain whereas crerebellum is located at the posterior part of the cerebrum

Answer 2

Cerebrum is the largest part in any mammal’s brain. It consists of

The Cerebral cortex, which plays a key role in many important aspects of life, such as memory, attention, perception, cognition, awareness, thought, language, and consciousness

Hippocampus, part of the brain used for consolidation of information in short-term and long-term memory, as well as spatial memory, so the way we perceive 3D objects and navigate in space

Basal ganglia – a group of subcortical ganglia, connected with our motoric skills, procedural learning, emotion and some more primal habits (which are almost reflex-like, for example teeth grinding or mouth twitching)

Olfactory bulb, a part of the brain that is connected with the sense of smell

and some other, less important parts of the brain.


What is Cerebellum?

The name stems from Latin, meaning “little brain”, although it’s really the second largest part of the brain, the first being cerebrum. It’s connected primarily with movement, as well as language and attention and some more primal feelings, such as pleasure and fear. Our coordination, accuracy and precision are guided by this part of the brain, and it’s the part that’s mostly used when, for example, learning how to ride a bike.

What are the Similarities between Cerebellum and Cerebrum?

Since the size and usage of these parts of the brain vary with different species among mammals and vertebrates, I will consider humans in this text and focus on similarities and differences in the particular case of the human brain.

The cerebellum and cerebrum are fairly dissimilar, so the only similarities that could be listed here are pretty vague, and it comes down to these:

They both participate in the regulation of movement and motor functions, as well as learning

They both communicate with the thalamus and the colliculi

They are both divided in two hemispheres (the cerebral and cerebellar hemispheres), although with a different structure (see Differences)

They both have grey matter on the outside and white matter on the inside, although the way they innervate into each other is different (see Differences)

Apart from that, finding any more similarities would be a far stretch of the truth.

Difference Between Cerebellum and Cerebrum 

Size 

Cerebrum is the largest component in the brain, while cerebellum is the second largest.

Mass

While the cerebrum takes up 83% of the total brain mass, the cerebellum forms around 11%.

Location

Cerebrum is located in the forebrain while cerebellum is located in the hindbrain.

Hemisphere separation

Although both cerebrum and cerebellum are separated into two hemispheres, cerebrum is separated with a structure called the median longitudinal cerebral fissure, which is different from the median vermis that separates the cerebellum into his hemispheres.

Arbor vitae formation

Arbor vitae is a structure that forms when there is a neural structure with white matter on the inside and grey matter on the outside, and the white matter innervates out into the grey matter. Cerebrum forms arbor vitae, since the white matter innervates out in that case. Cerebellum also has white matter on the inside and grey matter on the outside, but in this case grey matter innervates inwards into the white matter, not forming arbor vitae.

Activity control

Cerebrum is responsible for voluntary actions, motoric functions, cognition, awareness, and consciousness, while cerebellum has an important role in movement control, languages and some emotions.

Cortical layers

In a human brain, cerebrum will have 6 cortical layers, while cerebellum will have 3.

Lobes

While cerebrum consists of four distinctive lobes: frontal, temporal, parietal and occipital; cerebellum doesn’t form any lobes.

Number of neurons

Cerebellum alone consists of more than 50% of the total number of neurons in the human brain, which means that it has more neurons than cerebrum.

Evolutionary progression

The cerebellum has evolved first over the years, and it has been assumed that’s why it’s located in the hindbrain, why it’s smaller than the cerebrum and why it controls more basic and primal actions, feelings and instincts.

Senses and equilibrium

While the cerebrum is responsible for our senses, the cerebellum takes care of our inner equilibrium (by secreting hormones)