Q2 Briefly describe the structure of th cerebrum in human brain and mention its function ...

Question

Q2 Briefly describe the structure of th cerebrum in human brain and mention its function

Accepted Answer

Solution Brain consists of three main parts and lies in the cranial cavity of the skull 1 The cerebrum 2 The cerebellum 3 The medulla oblongata Cerebrum Cerebrum is the largest portion of the brainIt is divided into tworight and left halves called the cerebral hemispheres Their outer surface is folded with ridges and groovesEach hemisphere is internally hollowTheir walls have an outer and an inner portionThe outer portion contains cell bodies of the neurons and is called grey matterIt accommodates a large number of neurons human cerebrum contains about 9 billion neuronsThe inner portion of the cerebrum mainly consists of axons and is called white matter Functions 1 Iintelligenceconsciousness and will powerIt controls all voluntary activities 2 Cerebrum helps in balancing the body and maintaining a proper posture

Selina Solutions Class 8 Biology Solutions for Exercise Long Answer Questions (LA) in Chapter 7 - Nervous System