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Question : Answer question numbers (a) - (d)on the basis of you understading of the followingparagraph and the related studied concepts :Following is the chart showingbloodpressureand pulse rate of a 30 years oldperson, duringthe day. Studythe table and answerthe questions thatfollow :{:("Time","Blood Pressure (mm of Hg)","Pulse rate"),(6 am ,""110 7//0,68),(9 an ,""120 //70,72),(12 " noon ",""160//90,90),(3 " noon",""120//70,72),(6 p m ,""120//70,72),(9 p m ,""120 //70,70):} (a) Give your opinion on the readings. (b) What is the cause behind suddenhike in BP and pulse rate ?(c)Explain its action.(d)What explainsthe reading at 3 pm ? |
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Answer» Solution :(a)Thisperson.s normal BP and pulse rate is 120/70 and 72respectively. At 12 noon there may have been some emergency situation which resulted in increased BP and HEART rate. (b)Hormonereleased by adrenal gland i.e., adrenaline is released under stress or any emergency like situation. Thishormone prepares us toface such situationsand hence is released only at the time of an emergency. (c)Adrenaline is secreted directly intothe blood and CARRIED to different PARTS of the body . THETARGET organs or the specifictissues on which it acts include the heart. As a result, the heart beats faster, resultingin supply of more oxygen to our muscles. The bloodto the digestive system and skin is reduced due to contraction of muscles around small arteries in theseorgans . This diverts the blood to ourskeletal muscles. The breathing rate ALSO increases becauseof the contractions of the diaphragm and the rib muscles. Once the emergency situation is deal, with the adrenaline secretion stops and the body returns to normal. Hence, the heart rate and BP also gets normalised. |
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