The photograph shows an individual skiing in the mountains - Scottish Highers Human Biology - Question 12 - 2022
Question 12
The photograph shows an individual skiing in the mountains.
(a) State how prolonged activities like skiing can affect an individual’s endorphin production.
(b) The... show full transcript
Worked Solution & Example Answer:The photograph shows an individual skiing in the mountains - Scottish Highers Human Biology - Question 12 - 2022
Step 1
State how prolonged activities like skiing can affect an individual’s endorphin production.
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Answer
Prolonged activities such as skiing increase the levels or production of endorphins in the body.
Step 2
Explain the benefit of endorphin release immediately after the injury.
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Answer
The release of endorphins immediately after an injury helps to reduce the intensity of pain, acting as a natural painkiller and providing a sense of relief.
Step 3
Describe how morphine acts at a synapse to relieve pain.
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Answer
Morphine binds to and stimulates endorphin receptors in the brain, mimicking the action of endorphins to relieve pain.
Step 4
Describe how the repeated use of heroin can result in an individual developing a tolerance to it.
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Answer
Repeated use of heroin decreases the sensitivity of receptors in the body, leading to desensitization. As the individual uses heroin more frequently, their body adapts, resulting in a reduced response to the drug, necessitating higher doses to achieve the same effect.
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