State the sequence of changes that take place in human body when it prepares itself to protect itself from a scary or dangerous situation
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When an organism is in a scary or dangerous situation, adrenal glands secrete a hormone called adrenaline into the blood. .This hormone is transported all throughout the body. When this hormone is secreted a sequence of changes takes place in the body.
1 The heart starts beating faster. As a result more amount of oxygen is supplied to the muscles.
2 The breathing rate is increased because of the contraction of diaphragm and rib muscles.
3 It also increases the blood pressure.
4 Blood is diverted to organs such as heart, brain skeletal muscles because the blood vessels.
1 The heart starts beating faster. As a result more amount of oxygen is supplied to the muscles.
2 The breathing rate is increased because of the contraction of diaphragm and rib muscles.
3 It also increases the blood pressure.
4 Blood is diverted to organs such as heart, brain skeletal muscles because the blood vessels.
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When an organism confronts any scary situation, adrenaline hormone is secreted from the adrenal gland and is poured directly into the blood which then circulates to various parts of the body, resulting into the following actions:
(i) The main target organ includes the heart which starts to beat faster. Due to which, more amount of oxygen is supplied to the muscles.
(ii) The blood supply to digestive system and the skin is reduced due to contraction of muscles around small arteries in these organs. This diverts the blond to the skeletal muscles.
(iii) The breathing rate also increases because of the contraction of the diaphragm and rib muscles.
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