Here, the afferent neurons are sensory neurons while the efferent neurons are motor neurons. Overview and Key Difference 2. What is Afferent 3. What is Efferent 4. Similarities Between Afferent and Efferent 5. Afferent neurons are the neurons that carry sensory information such as nerve impulse from sensory organs towards the central nervous system. Sensory organs receive stimuli from the environment and send those signals to the central nervous system via sensory neurons.
These neurons are specialized cells, and from different parts of the body, they carry signals to the brain and the spinal cord. To describe further, the physical modalities such as light, sound, temperature, etc.
The sensory receptors located on the cell membrane are capable of converting this stimuli into electrical nerve impulses. Besides, afferent neurons are pseudounipolar neurons that have a single long dendrite and a short axon. Their cell bodies are smooth, round shaped and are located in the peripheral nervous system. Also, their axons travel from ganglion to ganglion and lead back to the spinal cord. Single long myelinated dendrite is similar to an axon and is responsible for transmitting sensory information or nerve impulse from sensory receptors to its cell body.
Efferent neurons also known as motor neurons can be found inside the central nervous system in the grey matter of spinal cord and medulla oblongata , and they are responsible for receiving information from the central nervous system and transmitting nerve impulse to the periphery of the body such as muscles, glands etc. The cell body of the motor neuron has a satellite shape. Also, it has a long axon and several shorter dendrites. Efferent: Efferent neurons carry signal from the CNS to effector organs and tissues.
Afferent: Afferent neurons consist of a short axon. Efferent: Efferent neurons consist of a long axon. Afferent: Afferent neurons consist of a receptor. Efferent: Efferent neurons lack a receptor. Afferent: Cell body of the afferent neuron is situated in the dorsal root ganglion of the spinal cord and no dendrites are found in it.
Efferent: Cell body of the efferent neuron is situated in the ventral root ganglion of the spinal cord and consists of dendrites. Afferent: Afferent neuron consists of one long dendron.
Efferent: Efferent neuron consists of many short dendrons. Afferent: Afferent neurons carry signals from the outer part of the body into the central nervous system.
Efferent: Efferent neurons carry signals from the central nervous system to the outer parts of the body. Afferent: Afferent neurons are found in skin, eyes, ears, tongue, and nose. Efferent: Efferent neurons are mainly found in muscles and glands. Afferent and efferent neurons are two components of the peripheral nervous system. Afferent neurons carry information from sensory organs towards the CNS.
CNS coordinates the stimuli with relevant responses. The response of the CNS to a particular stimulus is sent to the effector organs such as glands, organs, and tissues by efferent neurons. Thus, the main difference between afferent and efferent neurons is their role in coordinating stimuli and responses in the body. Available here. Living beings are able to sense what is going on in their surroundings and do something in reaction to that. This easy action is more complex than it seems.
Your eyes saw the car, your brain figured out that this is a dangerous and told your muscles of your leg to jump out of the way. Another example: if the flame of a candle burns your finger, you draw back your hand immediately. You sensed and then acted. For example it always receives information on the exact position of a limb, without having to look at it, scanning the flexion and stretching of the joints and muscles.
Based on this permanent feedback the nervous system can control the body activity, either voluntarily muscle movement or involuntarily heart beat.
Simple components for a complex assembly Our nervous system has different types of neurons that are constantly at work. Neurons that receive information from our sensory organs e. Neurons that send impulses from the central nervous system to your limbs and organs are called efferent neurons. Therefore, as the afferent neurons convey the sensory stimulus to the brain like burning sensation of a candle , the efferent neurons convey the motor stimulus to the muscles moving the hand away from the candle.
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