Blinking - to protect the eye from something flying towards it.
Pupil growing smaller - to obtain less light in the eye so you are not blinded
Pupil growing larger - to obtain more light so you can see clearer
An automatic response to the environment is a reflex
a relfex a relfex
This is the menace response, in which the eye perceives an object traveling towards it and the eyelids are slammed shut. The nerve relay is cranial nerve II (optic nerve), optic chiasma, visual cortex, cranial nerve V (trigeminal nerve).
During a sympathetic response, your pupils will dilate to allow more light to enter the eye, helping you to see better in a fight or flight situation. This response is driven by the release of adrenaline and is part of the body's automatic response to stress or danger.
An automatic response.
a reflex
reflex
reflex
The short pathway of neurons that allows for an automatic response is called a reflex arc. It typically involves a sensory neuron, an interneuron (in some cases), and a motor neuron, allowing for a rapid response to stimuli without involving the brain. This pathway enables quick reactions, such as pulling your hand away from a hot surface. Reflex arcs are crucial for protecting the body from harm.
An animal's immediate automatic response to an external stimulus will vary depending on the circumstance. When the external environment is stimulated there is a response that is triggered.
The automatic nerve response is from the system which controls the involuntary autonomous functions of the body. Breathing and heart beats are examples of these.
perhaps a reflex or an involuntary response.