Reflex
a reflex
The only response by the spinal cord is not an interpretation but a reflex. A sensory impulse comes in and at the cord a reflexive arc occurs taking information to muscles or glands. The brain does the interpretation. You touch a hot stove and that info goes to the spinal cord which causes a reflexive action where the muscles move the hand away. All that happens before the brain gets an "incident report".
No, not directly. Some sensory neurons can detect the effect of a motor neuron firing.
The initial sensory receptor detects a change e.g temperature. This is sent as an electrical impulse via a series of sensory receptors to the spine, if there is a problem a reflex occurs. If there is no problem the impulse is transmitted to the brain through the spinal cord.
The only response by the spinal cord is not an interpretation but a reflex. A sensory impulse comes in and at the cord a reflexive arc occurs taking information to muscles or glands. The brain does the interpretation. You touch a hot stove and that info goes to the spinal cord which causes a reflexive action where the muscles move the hand away. All that happens before the brain gets an "incident report".
the sensory receptors for the eyes are the cornea and the optic nerve
they are called receptors.
A reflex is an automatic response, that protects the organism from a harmful stimulus. The receptors detect a stimulus which generates a nerve impulse along the sensory neurone to the Central Nervous System (CNS). The CNS decides the appropiate response to the stimulus. The nerve impulse then travels across a synapse to the relay neurone, across another synapse to the motor neurone to the effector. This is normally a muscle or an organ which moves or responds to bring about a response appropiate to the stimulus.
The receptors of the eye are photo receptors, the ear has auditory receptors, the nose has olfactory (smell) receptors, the skin has tactile (touch)and thermo- (temperature) receptors and the tongue has gustatory (taste) receptors.
somatic receptors and special receptors
Sensory receptors enable you to respond to stimuli in the environment of an organism. Some sensory receptors respond to taste and smell while others respond to physical stimuli.
Sensory nerves, or the receptor nerves, as they are only made up of sensory neurons. Receptors are the specialised structures at the end of the sensory nerves that receive the stimuli and convert it into an electrical signal to be conducted by the nerve as a nerve impulse.