What are the 5 components of the reflex arc?
The reflex arc consists of 5 components:
- sensory receptor.
- sensory neuron.
- integration center.
- motor neuron.
- effector target.
What is the pathway of a reflex in the nervous system?
The anatomical pathway of a reflex is called the reflex arc. It consists of an afferent (or sensory) nerve, usually one or more interneurons within the central nervous system, and an efferent (motor, secretory, or secreto-motor) nerve. Most reflexes have several synapses in the reflex arc.
What are the components of a reflex arc in order?
So the reflex arc consists of these five steps in order-sensor, sensory neuron, control center, motor neuron, and muscle. These five parts work as a relay team to take information up from the sensor to the spinal cord or brain and back down to the muscles.
What is a reflex arc and its components?
The primary components of the reflex arc are the sensory neurons (or receptors) that receive stimulation and in turn connect to other nerve cells that activate muscle cells (or effectors), which perform the reflex action. The motor neuron carries efferent impulses to the effector, which produces the response.
Which is a correct route of an impulse in a reflex arc?
The correct process of a reflex arc is stimulus, receptor, sensory neuron, relay neuron, motor neuron, effector, response.
Which of the following components of a reflex arc happens first?
Reflex arc starts with a stimulus. The stimulus must be sufficiently strong to initiate impulse in sensory neuron. Sensory neuron carries the impulse to intermediary neuron. Intermediary neuron carries the impulse to appropriate motor neuron.
Which list gives the following five parts of a reflex arc in order?
Stimulus, sensory neuron, intermediary neuron, motor neuron and defector organ is the correct order of general reflex arc.
Which list gives the following five parts of a reflex arc in order quizlet?
Name Five essential components of a Reflex Arc: Receptor, Sensory Neuron, Integration center, Motor neuron, Effector.
What is the correct pathway of a nerve impulse?
Therefore, the pathway of a nerve impulse through a neuron is first a dendrite then the cell body and finally the axon. So, the correct answer is option (D), Dendrite → cell body → axon. Note: On sensing a stimulus, the sensory receptors communicate with sensory neurons which then carry impulses to the CNS.
What is the path of a reflex arc?
When a person accidentally touches a hot object, they automatically jerk their hand away without thinking. A reflex does not require any thought input. The path taken by the nerve impulses in a reflex is called a reflex arc. In higher animals, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord.
Where do nerve impulses go in a reflex?
The path taken by the nerve impulses in a reflex is called a reflex arc. In higher animals, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord.
Where are sensory neurons located in a reflex arc?
Reflex arcs Sensory neuron sends electrical impulses to a relay neuron, which is located in the spinal cord of the CNS. Relay neurons connect sensory neurons to motor neurons. Motor neuron sends electrical impulses to an effector. Effector produces a response (muscle contracts to move hand away).
What makes a reflex arc polysynaptic in nature?
Most reflex arcs are polysynaptic, meaning multiple interneurons (also called relay neurons) interface between the sensory and motor neurons in the reflex pathway.