The irritability of living beings is the reaction of a stimulus (be it external or internal) in which case it modifies the behavior of living beings that are subjected to them. For example: run to protect yourself from danger, give a kiss to a loved one.
Irritability in living beings refers specifically to the ability homeostatic (ability to maintain a stable internal condition of the organism to favor its adaptability to the environment). This allows their survival.
The response that living beings present is related to the adaptability of said living being with the surrounding environment.
Irritability is, then, a type of adaptive response of all living things from bacteria to humans. However, what varies is the response to said irritability. Irritability is also understood as the ability of a living being to react negatively and react to said stimulus.
exist two types of stimuli; the external and the internal. Internal stimuli are those coming from inside the organism itself. Instead, external stimuli are those that come from the environment where the organism is found.
For a living being to perform a type of reaction Like irritability, two processes must exist: coordination and organic integration. In living beings, those responsible for both processes are the endocrine system and the nervous system.
- Endocrine system. It works through chemicals called hormones. This system processes the stimuli coming from inside the body (internal stimuli).
- Nervous system. Receives stimuli from the external environment of the organism through the senses.
On the other hand, vegetables They have a hormonal coordination and integration system based on phytohormones or plant hormones.
Unicellular organisms do not present coordination and integration. However, they have irritability too.
Examples of irritability in living beings
- Run to protect yourself from danger.
- When the human heart flutters after a brisk walk or exercise.
- When bacteria modify the rate of reaction of their cell division
- When vegetables change the direction of their stems based on the search for natural light, shade, water, etc.
- Cover your face if there is an explosion nearby.
- Give a kiss to a loved one.
- Defecation or vomiting after eating spoiled food.
- The fear
- The movement of a muscle.
- Redness of the skin due to contact with some corrosive agent.
- Enter a dimly lit room and suddenly an intense light comes on.
- the anger
- The envy
- The wrath
- The mucus that produces a cold or flu.
- The sorrow
- The sadness
- The pupils by dilating when there is little light or by contracting when there is a lot of light.
- To blink
- Itchy mouth or heartburn after eating spicy foods.
- Remove your hand from a heat source after feeling the irradiation and possible burn.
- Scratching the skin when the living being is itchy.
- suffer from diarrhea
- To sigh
- Cover your ears after a deafening noise.
- be cold and shiver
- a sneeze
- a scare
- A stuck splinter that causes skin irritation.
- A mental illness such as schizophrenia or delirium.
- An angry reaction of a human.
- A verbal response is also an irritability of the organism.
- Affected airways after inhalation with pepper spray.