(N/A) The brain is the central information processing organ of our body and acts as the 'command and control system'.
Functions of the brain:
It controls voluntary movements,balance of the body,functioning of vital involuntary organs (e.g.,lungs,heart,kidneys),thermoregulation,hunger and thirst,circadian ($24$-hour) rhythms of our body,activities of several endocrine glands,and human behaviour.
It is also the site for processing vision,hearing,speech,memory,intelligence,emotions,and thoughts.
The human brain is well protected by the skull.
It is covered by $3$ cranial meninges:
$(1)$ Dura mater - outer layer
$(2)$ Arachnoid - middle thin layer
$(3)$ Pia mater - inner layer (which is in contact with brain tissue)
The brain can be divided into three major parts:
$(a)$ Forebrain
$(b)$ Midbrain
$(c)$ Hindbrain