Psychology Study Material: Functions of the Various Structures of the Brain

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The Brain

  • The centre of the nervous system.
  • The vital organ that is responsible for the functions of seeing, hearing, smelling, tasting, thinking, feeling, remembering, speaking, dreaming, information processing, and a lot more.
  • The regulator of basic survival functions such as breathing, resting and feeding.
  • It is responsible for abstract level functions such as decision making, foresight, and problem solving.
  • The spinal cord is an information highway connecting the PNS to the brain.
  • Information travels to and from the brain by way of spinal cord.

Functions of the Various Structures of the Brain

  • Regulation of the internal systems
  • Reproduction
  • Sensation
  • Motion
  • Adaptation to the varying environmental demands.

Structure of Brain

The deeply grooved structure lies safely and securely in our skull.

Structure of Brain
  • The average adult human brain weighs 1.3 to 1.4 kg (approx. 3 pounds) .
  • If you look at it from the outside the brain is pinkish Gray in colour; soft, spongy, and mottled.
  • The brain contains billions of nerve cells (neurons) and trillions of “support cells” .

Parts of the Brain

The brain is made of three main parts:

  • Fore brain
  • Mid brain
  • Hind brain

Fore Brain

  • Cerebrum
  • Thalamus
  • Hypothalamus
  • Limbic system

Mid Brain

  • Tectum
  • Tegmentum
  • Reticular formation
  • Substantia nigra

Hind Brain

  • Cerebellum
  • Pons
  • Medulla oblongata