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Somatic Nervous System It consists of two types of nerves: Cranial Nerves and Spinal Nerves. There are total 12 pairs of cranial nerves which originate from different brain parts. There are total 31 pairs of spinal nerves which originate from spinal cord. Spinal nerves have two functions. The nerve fibres of spinal nerves collects sensory…
Peripheral Nervous System (PNS) Peripheral Nervous System Peripheral nervous system (PNS) includes all those Sympathetic nervous system: It controls nerve cells and nerve fibers that connect central nervous system to out body parts. Peripheral nervous system is divided into somatic nervous system (SNS) and autonomic nervous system (ANS). Autonomic nervous system is further divided into…
Structure, Diagram, Parts Of Human Brain What is Brain ? Types of Brain Brain is located inside the skull. For the ease of study, brain can be divided into three parts. Forebrain: Itconsists of thalamus, hypothalamus and cerebrum. Midbrain: It is located between forebrain and hindbrain. Hindbrain: It consists of medulla, pons and cerebellum. Forebrain:…
Central Nervous System: The Brain and Spinal Cord Central Nervous System Central nervous system is the centre of all neural activities. It organizes all incoming sensory information, controls all cognitive activities and provides motor control over muscles and glands. It is assumed that human brain has developed periodically during millions of years from the brain…
What is the Nervous System ? Nervous System Human nervous system is well developed but complex in comparison to other organism. Although nervous system works as a unit in totality basis, but then also nervous system can be divided into two parts on the basis of location: Central Nervous System and Peripheral Nervous System. The…
Function of Nerve Cell Nerve cell conducts information in our body. This information flows in the form of nerve impulse in nervous system. Nerve impulse means an electrical current passing through axon for a very short duration. This is called spike. When stimulus energy reaches receptors, then some electrical changes takes place in nerve potential….
Structure of Nerve Cell Human nervous system is made up of 12 billion nerve cells. These cells differ from each other in shape, size, chemical composition and function. Despite these differences, the following three main components are found in all nerve cells. These are Soma, Dendrites, and Axon. Soma: Soma is the main part of…
Types of Nerve Cells Neurons areofthree types onthe basis of functions. Sensory Nerves: Nerves that receive nerve impulse from the receptor cells found in different sense organs of our body that receive sensory information from external environment and carry it to central nervous system i.e. brain and spinal cord. If a person looks at an…
Definition of nerve cell What is Nerve Cell ? Nervous system is made up of specific type of cells which are called nerve cells. These cells are completely different from other body cells in structure and function. Nerve cell is the basic and smallest unit of our nervous system. These cells are also called neurons….
Relation between Human Behavior and Biology Cell is the basic unit of human body. Many cells combine to form tissue. Similarly many tissues form organs and from organ to organ systems are formed. These organ systems perform specific functions of our body. For e.g. digestive system perform the function of digesting food. Circulatory system circulates…