Brain Structure and Function PDF

Biology - X The cerebrospinal fluid formed from the blood is reabsorbed into the blood. The functions of the cerebrospinal fluid are to provide nutrients and oxygen to the tissues of the brain, regulate the pressure inside the brain and to protect the brain from injuries....

Biology - X The cerebrospinal fluid formed from the blood is reabsorbed into the blood. The functions of the cerebrospinal fluid are to provide nutrients and oxygen to the tissues of the brain, regulate the pressure inside the brain and to protect the brain from injuries. Indicators Protection of the brain. Nourishment of the brain. The different parts of the brain control and coordinate all life activities. Analyse illustration 1.7 showing the structure of the brain and list the characteristics and functions of each part. Cerebrum the largest part of the brain. Thalamus numerous fissures and folds are seen. situated below the cerebrum. The grey coloured outer part of cerebrum is acts as relay station of impulses called Cortex and the white coloured inner part to and from the cerebrum. is called Medulla. analyses impulses from various centre of thought, intelligence, memory and parts of the body and sends the imagination. important ones to the cerebrum. evokes sensations. controls voluntary movements. Cerebellum the second largest part of the brain. seen behind the cerebrum as two flaps. fissures and grooves are present. coordinates muscular activities and maintains equilibrium of the body. Medulla oblongata the rod shaped medulla oblongata is seen below the cerebrum, located near the Hypothalamus cerebellum. situated just below the thalamus. controls involuntary actions like heart plays a major role in the maintenance beat, breathing etc. of homeostasis. Illustration 1.7 Structure and function of the brain 14