Question

suggest 6 reflex action of the body? explain how the reflex our is the same in all of them

Answer 1

Reflex action

This are involuntary and almost instantaneous movements of organs or body parts in response to a stimuli. Reflex actions are meant to protect the body from harm. These reflexes take place without the conscious thought.

Examples of reflexes of the human body

i) Sucking reflex in infants

ii) Withdrawal reflex

iii) Pupillary  light reflex

iv) Grasp reflex in infants

v) Sneezing

vi) Cough reflex

vii) Golgi tendon reflex

viii) Stretch reflex

ix) Ankle reflex

x) Muscular defense reflex

xi) Startle reflex

Similarity in the reflex actions

All the reflex actions occur involuntarily without the involvement of the conscious thought ( that is our brain).

For this to happen, reflex action make uses of reflex arcs. Reflex arcs are made up of motor neurons, sensory neurons and synapses located within the spinal cord connecting the two.

This arrangement allows for stimuli, carried by neurotransmitters, to be interpreted and effected in the spinal cord activating  the motor neuron without involving the brain.

The reflex arc ensures that the reflex actions occur faster and almost instantaneously.

Answer 2

Answer:

Following are the reflex action of the body :- 1) Dilation of pupils in dim light.  2) Patellar reflex  3) Sweating   4) Salivation   5) Shivering.  The reflex actions, however, show sudden responses and do not involve any thinking. When we accidentally touch a hot object, we withdraw our hands immediately without thinking. If we do not do this, our hands will burn. The sensory nerves detect the heat. They are connected to the nerves, which move the muscles of the hand. Such a connection of detecting the signal from the nerves (input), and responding to it immediately (output) is called a reflex arc. A reflex arc makes instant and automatic responses possible. It connects the input nerve and output nerve, and meets in a bundle in the spinal chord. In fact, nerves from all over the body meet in a bundle in the spinal cord, on their way to the brain. Therefore, the information input reaches the brain.

Explanation: