What is reflex arc with diagram?

A reflex arc is a simple nervous pathway which is responsible for the sudden reaction known as the reflex action. The afferent/sensory neurons are present in the receptor organ which receive the stimulus. The neuron transmits the sensory information from receptor organ to the spinal cord.

What is the order of reflex arc?

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 are the 5 parts of a reflex arc?

The reflex arc consists of 5 components:

• sensory receptor.
• sensory neuron.
• integration center.
• motor neuron.
• effector target.

What is a reflex arc quizlet?

Definition : A reflex arc is the nerve pathway which makes such a fast, automatic response possible.

What is a reflex arc and its component parts?

The simplest arrangement of a reflex arc consists of the receptor, an interneuron (or adjustor), and an effector; together, these units form a functional group. Sensory cells carry input from the receptor (afferent impulses) to a central interneuron, which makes contact with a motor neuron.

What is a reflex arc BBC Bitesize?

The nerve pathway followed by a reflex action is called a reflex arc . For example, a simple reflex arc happens if we accidentally touch something hot. Receptor in the skin detects a stimulus (the change in temperature). Sensory neurone sends electrical impulses to relay neurone, which are located in the spinal cord.

What are the 4 parts to a reflex arc?

1 Answer. Receptor, afferent neuron, interneuron, efferent neuron and effector.

What are the 6 parts of the reflex arc?

The essential components of a reflex arc include the following: receptor, sensory neuron, integration center, motor neuron, and effector.

Which reflex has a contralateral component?

The crossed extensor reflex is contralateral, meaning the reflex occurs on the opposite side of the body from the stimulus.

What are reflex arcs simple?

The reflex arc is a special type of neural circuit that begins with a sensory neuron at a receptor (e.g., a pain receptor in the fingertip) and ends with a motor neuron at an effector (e.g., a skeletal muscle).

What is a reflex arc?

Draw a labelled diagram of reflex arc and explain reflex action. The reflex arc describes the pathway in which the nerve impulse is carried and the response is generated and shown by the effector organ. 1. The receptor is present in the receptor organ.

What are the components of a reflex?

Now let’s look at the components of a reflex. All reflexes follow a reflex arc, which follow the following path: Stimulus: This is what initiates the reflex. A stimulus could be many things, but we’ll use the example of something hot touching the skin.

How do reflex reflexes work?

Reflex arcs 1 Receptor in the skin detects a stimulus (the change in temperature). 2 Sensory neuron sends electrical impulses to a relay neuron, which is located in the spinal cord of the CNS. Relay… 3 Motor neuron sends electrical impulses to an effector. 4 Effector produces a response (muscle contracts to move hand away). More

What is an example of reflex action?

The nerve pathway followed by a reflex action is called a reflex arc. For example, a simple reflex arc happens if we accidentally touch something hot. 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.