What is the correct order of components of a reflex arc?

Answer 1

The three-neuron arc is the most common and consists of the afferent neurons, interneurons, and the efferent neurons.

Afferent neurons conduct impulses to the CNS from the receptors.

Efferent neurons conduct impulses from the CNS to effectors (muscle or glandular tissue).

Two-neuron arc is the simplest form, fastest responding and consists of afferent and efferent neurons. Example is the knee-jerk reflex.

Answer 2

receptor which reacts to stimulus

sensory neuron which carry afferent information to CNS

integration center which has one or more synapse in CNS

motor neuron that carry efferent information from integration center to effector

effector responds to efferent impulses

Answer 3

A stimulus, neurons taking the stimulus to the spinal cord, neurons taking the response back to muscles, and the muscles which perform the reflex. The arc is between stimulus-nerves-spinal cord-nerves-muscles. The brain is NOT involved.

Answer 4

A reflex is a rapid, involuntary response to a stimulus. Most reflexes are spinal reflexes with pathways that traverse only the spinal cord.

During a spinal reflex, information may be transmitted to the brain, but it is the spinal cord, and not the brain, that is responsible for the integration of sensory information and a response transmitted to motor neurons. The reflex can happen faster than your brain can process it.

A reflex arc involves the following components:

1. The receptor is the part of the neuron (usually a dendrite) that detects a stimulus.

2. The sensory neuron transmits the impulse to the spinal cord.

3. The integration center involves one synapse (monosynaptic reflex arc) or two or more synapses (polysynaptic reflex arc) in the gray matter of the spinal cord.

4. A motor neuron transmits a nerve impulse from the spinal cord to a peripheral region.

5. An effector is a muscle or gland that receives the impulse form the motor neuron.

In somatic reflexes, the effector is skeletal muscle. In autonomic (visceral) reflexes, the effector is smooth or cardiac muscle, or a gland.

Answer 5

There are five components: Sensory receptor, sensory neuron, integrating center, morot neuron, and effector

Answer 6

1. Receptor

2. Sensory ( Afferent) Nerves

3. Intermediate Nerve Fibre

4. Motor (Efferent) Nerve

5. Effector Organ

Answer 7

Receptor, sensory neuron, intergration center, motor neuron, and effector

Answer 8

Sensory Neuron Association Neuron Motor Neuron Effector Response occurs

Answer 9

Receptor

Sensory Neuron

Center

Motor Neuron

effector