Organization's of nervous system, Lecture notes of Anatomy

Download Organization's of nervous system and more Lecture notes Anatomy in PDF only on Docsity!

HAP 2 Hr No. 01 - Lecture notes 1

Human anatomy and physiology

ORGANIZATION OF THE NERVOUS SYSTEM

The nervous system consists of two main subdivisions: the central nervous system and the peripheral nervous system.

Central Nervous System

• The central nervous system (CNS) consists of the brain and spinal cord. The CNS processes many different kinds of incoming sensory information. It is also the source of thoughts, emotions, and memories. Most nerve impulses that stimulate muscles to contract and glands to secrete originate in the CNS.

Peripheral Nervous System

• The peripheral nervous system (PNS) includes all nervous tissue outside the CNS. Components of the PNS include cranial nerves and their branches, spinal nerves and their branches, ganglia, and sensory receptors.
• The PNS may be subdivided further into a somatic nervous system (SNS) , an autonomic nervous system (ANS) , and an enteric nervous system (ENS) ( enter - intestines).
• The SNS consists of;
• sensory neurons that convey information from somatic receptors in the head, body wall, and limbs and from receptors for the special senses of vision, hearing, taste,

BP201T (Human Anatomy and Physiology-II) Hr No: 01

Hindbrain

Midbrain

Forebrain