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Question
How does our body respond when adrenaline is secreted into the blood? [5 MARKS]
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Solution
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1. During emergency or dangers, adrenal gland secretes adrenaline. It is a hormone secreted directly into the blood and is transported to different parts of the body.
2. It speeds up the heartbeat and hence supplies more oxygen to the muscles for fight or flight.
3. It dilates the pupil to increase the area of vision.
4. This results in increasing breathing rate and blood pressure which enable them to fight with such urgent situation.
5. It dilates the bronchus which increases the volume of air available for diffusion.
1. During emergency or dangers, adrenal gland secretes adrenaline. It is a hormone secreted directly into the blood and is transported to different parts of the body.
2. It speeds up the heartbeat and hence supplies more oxygen to the muscles for fight or flight.
3. It dilates the pupil to increase the area of vision.
4. This results in increasing breathing rate and blood pressure which enable them to fight with such urgent situation.
5. It dilates the bronchus which increases the volume of air available for diffusion.
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