6.3 Stress & Caffeine*

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  • 1/9 Questions

    Adrenaline triggers a sympathetic response by_______________ heart rate  in response to stress.

    • Increasing
    • Decreasing
    • Lowering
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About This Quiz


Anatomy & Physiology
Unit 6 - Endocrine System
6.3 - I CAN describe the effects of stress & caffeine on the body.

6.3 Stress & Caffeine* - Quiz

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  • 2. 

    What does adenosine do in the brain?

    • Builds up as we use energy, which makes you tired

    • Indicates that we are stressed

    • Indicates that we are sick

    Correct Answer
    A. Builds up as we use energy, which makes you tired
    Explanation
    Adenosine is a molecule that accumulates in the brain as we use energy. It acts as a neurotransmitter and binds to specific receptors, causing drowsiness and promoting sleep. Therefore, as adenosine builds up, it signals to the brain that it needs rest and makes us feel tired. This explains why we feel more fatigued after a long day of physical or mental activity.

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  • 3. 
    This person probably has: - ProProfs

    This person probably has:

    • Low levels of adenosine

    • High levels of cortisol

    • Low levels of cortisol

    Correct Answer
    A. High levels of cortisol
    Explanation
    This person probably has high levels of cortisol. Cortisol is a hormone released by the adrenal glands in response to stress. High levels of cortisol can indicate chronic stress, anxiety, or an overactive adrenal gland. It can lead to symptoms such as weight gain, high blood pressure, and impaired immune function.

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  • 4. 

    Caffeine blocks the receptors for what hormone?

    • Adenosine

    • Adrenaline

    • Estrogen

    Correct Answer
    A. Adenosine
    Explanation
    Caffeine blocks the receptors for adenosine. Adenosine is a hormone that promotes relaxation and drowsiness. By blocking its receptors, caffeine prevents adenosine from binding and exerting its effects, leading to increased alertness and reduced fatigue. This is why caffeine is commonly consumed to stay awake and improve focus.

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  • 5. 
    The caffeine in this beverage will help a person stay up late because: - ProProfs

    The caffeine in this beverage will help a person stay up late because:

    • Caffeine blocks adenosine from being received in the brain

    • Caffeine increases the amount of adenosine

    • Caffeine increases our cortisol levels

    Correct Answer
    A. Caffeine blocks adenosine from being received in the brain
    Explanation
    Caffeine blocks adenosine from being received in the brain. Adenosine is a neurotransmitter that promotes sleep and relaxation. When caffeine is consumed, it binds to the adenosine receptors in the brain, preventing adenosine from binding to these receptors. As a result, the person feels more alert and awake.

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  • 6. 

    Too much stress is dangerous because:

    • The body has too much adenosine

    • The body does not have time to heal, rest and digest

    • The body does not have enough cortisol

    Correct Answer
    A. The body does not have time to heal, rest and digest
    Explanation
    When a person is under too much stress, their body does not have enough time to heal, rest, and digest. Stress activates the body's fight-or-flight response, which diverts resources away from these essential functions. Instead, the body focuses on immediate survival, such as increasing heart rate and blood pressure. This prolonged state of stress can lead to various health problems, including weakened immune system, digestive issues, and increased risk of chronic diseases. Therefore, it is important to manage stress levels and allow the body time to recover and perform these vital functions.

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  • 7. 

    Which of the following is a true statement about adenosine?

    • Adenosine gives us more energy

    • Adenosine builds up as we use energy

    • Adenosine creates high levels of stress

    Correct Answer
    A. Adenosine builds up as we use energy
    Explanation
    Adenosine is a molecule that is produced in the body as a byproduct of energy consumption. As we use energy, adenosine gradually accumulates in our system. This build-up of adenosine acts as a signal to the body that it needs to rest and recover. Therefore, the statement "adenosine builds up as we use energy" is true.

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  • 8. 

    Why is the cortisol triggered by stress helpful?

    • It gives the body extra energy to respond to stress

    • It helps the body rest and digest

    • It helps the body calm down

    Correct Answer
    A. It gives the body extra energy to respond to stress
    Explanation
    Cortisol is a hormone released in response to stress. It helps the body by providing extra energy to deal with the stressor. This energy boost allows the body to respond effectively to the stress, whether it's by fighting, fleeing, or taking necessary action. By increasing blood sugar levels and suppressing non-essential functions, cortisol helps the body stay alert and focused during stressful situations. Therefore, it can be said that cortisol triggered by stress is helpful because it gives the body the energy it needs to respond to the stressor.

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  • 9. 
    Caffeine is making this guy's brain think that he is: - ProProfs

    Caffeine is making this guy's brain think that he is:

    • NOT tired, because his brain is receiving more adenosine

    • NOT tired, because caffeine blocks his brain from receiving adenosine

    • Tired, because he is using too much energy

    Correct Answer
    A. NOT tired, because caffeine blocks his brain from receiving adenosine
    Explanation
    Caffeine is a stimulant that blocks the receptors in the brain that receive adenosine, a neurotransmitter responsible for promoting sleep and relaxation. When these receptors are blocked, the brain does not receive the signal that it is tired, leading to a feeling of wakefulness and alertness. Therefore, the correct answer is that caffeine blocks the brain from receiving adenosine, making the person not tired.

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  • Current Version
  • Aug 31, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 14, 2013
    Quiz Created by
    Rlabov
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