The afferent or sensory division transmits impulses from peripheral organs to the CNS . The efferent or motor division transmits impulses from the CNS out to the peripheral organs to cause an effect or action.
What does the afferent division consist of?
The afferent division consists of neurons that are bringing sensory information about the periphery toward the CNS , while the efferent division consists of neurons that are conveying information away from the CNS, and out to control muscles and organs in the body.
What is sensory division?
The sensory (afferent) division carries sensory signals by way of afferent nerve fibers from receptors in the central nervous system (CNS). It can be further subdivided into somatic and visceral divisions. The somatic sensory division carries signals from receptors in the skin, muscles, bones and joints.
What are the 2 divisions of the nervous system?
The nervous system has two main parts: The central nervous system is made up of the brain and spinal cord. The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
Where is the sensory division?
The sensory division is a part of peripheral nervous system, it runs from sensory organs to the CNS (brain and spinal cord) . The sensory division collects information (touch, pain, pressure, vision, taste etc) from outside (somatic sensory) and inside (visceral sensory) of the body and carries them to the CNS.
What is the function of sensory or afferent division?
The afferent or sensory division transmits impulses from peripheral organs to the CNS . The efferent or motor division transmits impulses from the CNS out to the peripheral organs to cause an effect or action.
What are the 3 types of nerve cells?
The takeaway
While there are billions of neurons and thousands of varieties of neurons, they can be classified into three basic groups based on function: motor neurons, sensory neurons, and interneurons .
What are afferent and efferent pathways?
Afferent neurons carry signals to the brain and spinal cord as sensory data . ... This neuron’s response is to send an impulse through the central nervous system. Efferent neurons are motor nerves. These are motor neurons carrying neural impulses away from the central nervous system and toward muscles to cause movement.
Which has its cell body in a ganglion?
Dorsal root ganglia (also known as the spinal ganglia ) contain the cell bodies of sensory (afferent) neurons. Cranial nerve ganglia contain the cell bodies of cranial nerve neurons. Autonomic ganglia contain the cell bodies of autonomic nerves.
What are the major divisions of the nervous system what are their major functions?
There are two major divisions of the nervous system: the central nervous system (CNS) and the peripheral nervous system (PNS) . The central nervous system is made up of the brain, the spinal cord, and the retina and controls essentially all the functions that keep you alive and allow you to experience life.
What is nervous system with diagram?
The Central Nervous System is the integration and command center of the body. It consists of the brain, spinal cord and the retinas of the eyes. The Peripheral Nervous System consists of sensory neurons, ganglia (clusters of neurons) and nerves that connect the central nervous system to arms, hands, legs and feet.
What are the 4 types of nerves?
These nerves control the involuntary or partially voluntary activities of your body, including heart rate, blood pressure, digestion, and temperature regulation. Motor nerves. These nerves control your movements and actions by passing information from your brain and spinal cord to your muscles. Sensory nerves .
What are the 5 main parts of a neuron?
The structure of a neuron: The above image shows the basic structural components of an average neuron, including the dendrite, cell body, nucleus, Node of Ranvier, myelin sheath, Schwann cell, and axon terminal .
What is in the sensory system?
A sensory system consists of sensory receptors, neural pathways, and parts of the brain involved in sensory perception. ... Commonly recognized sensory systems are those for vision, hearing, somatic sensation (touch), taste and olfaction (smell).
What are the two main divisions of the PNS?
In some cases, these nerves are very small but some nerve bundles are so large that they can be easily seen by the human eye. The peripheral nervous system itself is divided into two parts: the somatic nervous system and the autonomic nervous system .
What are the 2 major divisions of the PNS?
The PNS has two major subdivisions: the somatic nervous system and the autonomic nervous system . The somatic nervous system is associated with activities traditionally thought of as conscious or voluntary.
