Stimulus A Level Biology

An example of a stimulus is an individual placing a hand on a hot surface.

Stimulus a level biology. A biologic stimulus is any external change in the environment that can be detected by an organism. A level biology central concepts control coordination and homeostasis. Respond to stimulus such as adrenaline responding to a frightening stimulus transported by the blood and have a group of cells which it affects target cells.

Unlock our full a level biology course at https snaprevise co uk which includes teaching videos exam question videos revision guides quizzes predicted. May 20 2020 updated. This resource is a revision powerpoint for wjec a level biology focusing on the stimulus response model.

Stimulus is detected by receptor cells and electrical impulse is sent along sensory neurone 2. Aqa a level biology nervous coordination and muscles 66 terms. Some receptors can detect several different stimuli but they are usually specialised to detect one type of stimulus.

Aqa a level biology energy and ecosystems 36 terms. A cell adapted to detect changes in the environment and specific to 1 stimulus. Contains both pdf and editable microsoft publisher version.

Stress is the body s method of reacting to a condition such as a threat challenge or physical and psychological barrier. The temperature is the stimulus and the individual then protects themselves. A revision mind map covering the response to stimuli section of the aqa as a level biology 7401 7402 specification.

Once it reaches end of neurone neurotransmitters carry information to the next neurone relay neurone in the cns. Their job is to convert the stimulus into electrical signals in nerve cells. In humans and most mammals the autonomic.