What is the pathway of a reflex in the nervous system?

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 is the correct pathway of a spinal reflex?

Monosynaptic pathway of the spinal stretch reflex (SSR) and its electrical analog, the H-reflex. The pathway comprises the Ia afferent neuron from the muscle spindle, its synapse on the alpha motor neuron, and the motor neuron itself.

What is the pathway of a nervous impulse?

The signal leaves the nerve and spreads around the muscle, causing contraction or expansion. The pathway is as follows: Stimulus -> Sensory Receptor -> Sensory Neuron -> Spinal Cord -> Brain -> Spinal Cord -> Sensory Neuron -> Neuromuscular Junction -> Skeletal Muscle.

What is reflex movement?

A reflex is an involuntary and nearly instantaneous movement in response to a stimulus. The reflex is an automatic response to a stimulus that does not receive or need conscious thought as it occurs through a reflex arc. Reflex arcs act on an impulse before that impulse reaches the brain.

What is reflex action short answer?

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. A reflex action follows this general sequence and does not involve the conscious part of the brain.

What are the sensory pathways?

Sensory pathways consist of the chain of neurons, from receptor organ to cerebral cortex, that are responsible for the perception of sensations. Most somatosensory pathways terminate in the parietal lobe of the cerebral cortex.

What is the pathway of a nerve impulse through 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).

Which is the correct description of a reflex action?

A reflex action is a way for the body to automatically and rapidly respond to a stimulus to minimise any further damage to the body. It follows this general sequence and does not involve the brain: The nerve pathway followed by a reflex action is called a reflex arc.

Where is the spinal cord responsible for reflex action?

In a reflex action, the spinal cord along with the brain stem is responsible for the reflex movements.

What is the path taken by nerve impulses in a reflex?

Reflex arc: The path taken by the nerve impulses in a reflex is called a reflex arc. This is shown here in response to a pin in the paw of an animal, but it is equally adaptable to any situation and animal (including humans).

Where does the reflex arc pathway take place?

The following diagram shows the reflex arc pathway. The receptor here is the sense organ that senses danger. The sensory neurons pick up signals from the sensory organ and send them through other neurons which are interconnected. It is then received by the relay neuron which is present in the spinal cord.