What is the path a nerve impulse travels during a reflex action?

What is the path a nerve impulse travels during a reflex action?

When neurons are stimulated they transmit an electrical impulse. The pathway followed is: stimulus —> dendrite –> cell body –> axon –> axon terminal –> passage of stimulus.

How does a reflex movement work?

A reflex action often involves a very simple nervous pathway called a reflex arc. A reflex arc starts off with receptors being excited. They then send signals along a sensory neuron to your spinal cord, where the signals are passed on to a motor neuron. As a result, one of your muscles or glands is stimulated.

What happens in reflex actions?

Reflex actions These different types of neurons work together in a reflex action . A reflex action is an automatic (involuntary) and rapid response to a stimulus, which minimises any damage to the body from potentially harmful conditions, such as touching something hot.

What happens in reflex action?

Reflex arcs Receptor in the skin detects a stimulus (the change in temperature). Sensory neuron sends electrical impulses to a relay neuron, which is located in the spinal cord of the CNS. Motor neuron sends electrical impulses to an effector. Effector produces a response (muscle contracts to move hand away).

Where does a reflex action take place in the brain?

Stimulation occurs through the peripheral nervous system and the response to this peripheral nerve stimulation is involuntary. In a reflex action, the spinal cord along with the brain stem is responsible for the reflex movements.

How many neurons are involved in a reflex?

Some of the simplest nerve pathways consist of little more than two neurons that communicate across a single synapse. A reflex is a relatively simple motor response that does not involve a large number of interneurons (or association neurons).

What do you need to know about reflexes?

A Quick Look at Reflexes 1 Your brain’s role. Your brain gets involved by modifying and fine-tuning reflex actions. 2 Modifying reaction time. Reflexes do play a role in reaction time. Some people are born with faster reflexes. 3 Reflexes and age. Reflexes do slow with age. Physical changes in nerve fibers slow the speed of conduction.

How is the reflection in the mirror a reflex action?

The reflection (reflex action) in the mirror did not involve the brain. In a reflex action, a stimulus (in this case, the heat from a burning candle) arouses sensory receptors, which send a signal via sensory neurones to the spinal cord.