Question

With the help of a flow chart, show the path of a reflex action such as sneezing.

Answer 1

Path of a Reflex Action - Sneezing:

Stimulus (Irritant in Nasal Passage)

↓

Sensory Receptor (Nasal Nerve Endings)

↓

Sensory Neuron (Carries Signal to Spinal Cord)

↓

Spinal Cord (Processing Center)

↓

Motor Neuron (Carries Signal to Effector)

↓

Effector (Muscles Involved in Sneezing Diaphragm, Chest and Abdominal Muscles)

↓

Response (Sneezing)

Path of a Reflex Action - Sneezing:

1. Stimulus: Presence of an irritant in the nasal passage.
2. Sensory Receptor: Nasal nerve endings detect the irritant.
3. Sensory Neuron: Carries the sensory signal to the spinal cord.
4. Spinal Cord: Acts as the processing center for the reflex action.
5. Motor Neuron: Carries the processed signal from the spinal cord to the effector.
6. Effector: Muscles involved in the sneezing reflex, including the diaphragm, chest, and abdominal muscles.
7. Response: Sneezing occurs as a rapid and involuntary expulsion of air to clear the irritant from the nasal passage.