The receptor!
Receptor
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.
Is a dectable change in the internal or external environment
Human behavior is influenced by a combination of internal (biological, psychological) and external (social, cultural, environmental) determinants. These factors can include genetics, upbringing, societal norms, peer influence, personal beliefs, and past experiences. Additionally, individual characteristics such as personality, attitudes, and values also play a significant role in shaping behavior.
external is thunder
The difference between an external stimulus and an internal stimulus is that an external stimulus is a stimulus that comes from outside an organism. But an internal stumulus is a stimulus that comes from inside an organism. An example for an external stimulus can be that when you are cold, you put on a jacket. An example for an internal stimulus is that when you feel hungry, you eat food.
You will have to use your finger on your ear to determine which part of the ear receives a stimulus
External Stimulus
It is an external stimulus.
The term for an involuntary reaction to an external stimulus is a reflex.
Anything in an organism's external environment that causes the organism to react is a stimulus. a reaciton to a stimulus is a response. The ability to respond to stimuli in the environment is an important characteristic of living things
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A stimulus is the term for a change in a cell's environment that evokes a response.The stimulus may be external (such as the sound of someone else talking, or a traffic light changing) or internal (such as the degree of stretch in a muscle inside the body).