Afferent neurons carry nerve impulses towards the central nervous system from sensory organs. In contrast, efferent neurons carry nerve impulses from the central nervous system to the muscles. Therefore, this is the key difference between afferent and efferent neurons.
Furthermore, afferent neurons are sensory neurons with a short axon while efferent neurons are motor neurons with a long axon. Hence, one other difference between afferent and efferent neurons is the length of the axon.
That is, the afferent neurons have short axons compared to the efferent neurons, which have long axons. The below infographic tabulates the difference between afferent and efferent neurons with more details.
Afferent and efferent neurons are two major types of neurons present in the nervous system. Afferent neurons bring nerve impulses generated by the sensory organs to the central nervous system.
Receptors of the sensory organs receive external stimuli and generate into nerve impulses and send to the brain and spinal cord by the afferent neurons, which are sensory neurons. Therefore, they send signals in one direction. On the other hand, efferent neurons start from the central nervous system and carry nerve impulses from the central nervous system to the muscles and glands.
Afferent fibers are also directly connected to efferent fibers. The patellar reflex, also known as the knee-jerk reflex, is a good example. This simple test that many undertook during medical examination reveals a reflex that is essential in maintaining the posture and balance, thus allowing a person to walk without having to think about every single step. When the reaction is more complex, the intervention of higher levels of the central nervous system is required.
The receptor in the finger detects the heat coming from the candle. This information travels to the spinal cord and through several neuronal relays the muscles of the arm are innervated, the hand is retracted and the brain senses the pain. Even more complex is the escape from the car: the eye detects the car and transmits this information to the brain.
The brain then elaborates an appropriate response jumping out of the way and sends the corresponding motor action to the muscles. Afferent neurons bring stimuli to the brain, where the signal is integrated and processed. The brain then coordinates a response via efferent signals back to the rest of the body. The ventral root of the spinal cord is located anteriorly, while the dorsal root is located posteriorly.
Afferent neurons enter the spinal cord through the dorsal root, carrying signals from the body to the brain. Efferent neurons exit the spinal cord from the ventral root before interfacing with their target muscles. Which of the following answers explains the typical succession of neuronal communication from receiving sensory input to generating a muscle response? The typical response pattern is that a sensory afferent neuron receives the external stimulus and communicates with an interneuron.
The information is then interpreted, and a response is sent through efferent motor neurons to the appropriate portion of the body. Afferent neurons are sensory neurons that carry nerve impulses from sensory stimuli towards the central nervous system and brain, while efferent neurons are motor neurons that carry neural impulses away from the central nervous systme and towards muscles to cause movement. In this case, the afferent neuron would carry sensory information from your hand to your brain, letting it know your body is touching something hot.
Your brain would then process this information and use efferent neurons to tell the arm muscle to contract and move your hand away. Afferent neurons are neurons whose axons travel towards or bringing information to a central point, while an efferent neuron is a cell that sends an axon or carries information away from a central point. For example, if the central point in question is the brain, sensory neurons are afferent because they send information to the brain, while motor neurons are efferent because they carry information from the brain to effector organs like muscles or glands.
It is crucial to keep in mind exactly which structure is the current focus of the discussion, since the terms "afferent" and "efferent" are relative to the direction of information transmission. If you've found an issue with this question, please let us know. With the help of the community we can continue to improve our educational resources. If Varsity Tutors takes action in response to an Infringement Notice, it will make a good faith attempt to contact the party that made such content available by means of the most recent email address, if any, provided by such party to Varsity Tutors.
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.
0コメント