Combined Science Double Award - 9204 OxfordAQA

Control Of Blood Glucose

Akopọ

Drink a glass of sweetened orange juice and, for a few minutes, a large quantity of sugar pours out of your small intestine and into your bloodstream. Two hours later a blood test would struggle to prove you had drunk anything at all. Something worked very hard, very quietly, to put that number back where it started, and it did so without you noticing or deciding anything.

This lesson is about that something: a small organ tucked behind the stomach that samples the blood flowing past it and answers with a hormone. You will learn what insulin does, where the glucose actually goes when it leaves the blood, and what happens when the system stops working properly, in the two forms of diabetes the specification names. All of that belongs to both tiers. You will then meet the second hormone, glucagon, which the specification prints in bold and which therefore belongs to the Extension Tier alone: the half of the control system that puts glucose back.

Awọn Afojusun

  1. The blood glucose concentration is monitored and controlled by the pancreas. Much of the glucose is stored as glycogen in the liver and muscles. When these stores are full, excess glucose is stored as lipid.
  2. If blood glucose levels are too high, the pancreas produces the hormone insulin, which allows the glucose to move from the blood into the cells.
  3. When blood glucose levels fall, the pancreas produces a second hormone, glucagon. This causes glycogen to be converted into glucose and released into the blood.
  4. In Type 1 diabetes a person’s blood glucose level may be too high because the pancreas does not produce enough of the hormone insulin. Type 1 diabetes may be controlled by careful diet, exercise, and by injecting insulin.
  5. Type 2 diabetes develops when the body does not respond to its own insulin. Obesity is a significant factor in the development of Type 2 diabetes. Type 2 diabetes can be controlled by careful diet, exercise and by drugs that help the cells to respond to insulin.

Àwòrán ọpọlọ

A ti ṣe àwòrán kókó yìí kí o lè rí bí àwọn èrò ṣe so pọ̀.

Ṣí àwòrán ọpọlọ nínú áàpù

Akọ̀wé Ẹ̀kọ́

Glucose in the blood of a healthy person sits inside a narrow band, usually quoted in millimoles per cubic decimetre, and even after a heavy plate of rice the figure comes back down towards the lower end of that band within roughly two hours. That stability is strange when you think about what it is up against: meals arrive at unpredictable times and in unpredictable sizes, while your brain and muscles withdraw glucose from the blood every second of the day and night, including the eight hours you spend asleep and eating nothing. Supply is lumpy and demand is continuous, yet the concentration barely shifts.

Àkọsílẹ̀ Ẹ̀kọ́ Pípé wà lórí Ohun Èlò Green Bridge

Gba ohun èlò Green Bridge CBT sórí fóònù tàbí kọ̀mpútà rẹ fún gbogbo ilé ìkàwé IGCSE: ìwé ìdánwò àtijọ́, ìlànà ìdíwọ̀n, àwòrán èrò, káàdì ìkẹ́kọ̀ọ́ àti ẹ̀kọ́ ohùn.

Awọn akọsilẹ ẹkọ ni kikun pẹlu awọn aworan apejuwe
Oluranlọwọ ẹkọ ti AI ṣe agbara rẹ
Ìdánwò àdáṣe onítọ̀kọ̀ tí a ń ṣàyẹ̀wò lẹ́sẹ̀kẹsẹ̀ tí o bá parí
O wa lori Android, Windows, macOS, ati Linux Áàpù iOS ń bọ̀ láìpẹ́

Ìdánwò Ẹ̀kọ́

Oriire fun ipari ẹkọ lori Control Of Blood Glucose. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.

Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.

Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.

  1. Which organ monitors the concentration of glucose in the blood? A. The liver B. The pancreas C. The kidney D. The small intestine Answer: B
  2. Blood glucose levels have fallen below normal. Which hormone is produced, and what does it cause? A. Insulin, causing glucose to be stored as glycogen B. Insulin, causing glycogen to be converted into glucose C. Glucagon, causing glucose to be stored as glycogen D. Glucagon, causing glycogen to be converted into glucose Answer: D
  3. Where is excess glucose stored once the glycogen stores in the liver and muscles are full? A. As lipid B. As protein C. As extra glycogen in the pancreas D. As starch Answer: A
  4. Which statement describes Type 2 diabetes? A. The pancreas produces too much insulin B. The body does not respond to its own insulin C. The liver cannot store glycogen D. The pancreas produces no glucagon Answer: B
  5. A man's blood glucose concentration rises from 5.0 to 8.0 units after a meal. What is the percentage increase? A. 37.5% B. 50% C. 60% D. 160% Answer: C

Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà

Ṣiṣẹ́ lórí àwọn ìbéèrè wọ̀nyí nínú ohun èlò náà

Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe

Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Control Of Blood Glucose? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.

Ṣe igbasilẹ ohun elo naa lori Google Playstore

Gbogbo ohun ti o nilo lati ṣe dara julọ ninu JAMB, WAEC ati NECO.

Green Bridge CBT Mobile App
Asiko ẹkọ AI ti ara ẹni Chat Assistant
Ìbéèrè ìdánwò IGCSE, JAMB, WAEC ati NECO tó ju 200,000 lọ
Fiwọn 1200 Awọn akọsilẹ Ẹkọ ju.
Atilẹyin Aisinipo - Kọ ẹkọ Nigbakugba, Nibi gbogbo
Tẹ̀dí Green Bridge
Àkójọpọ̀ Ìtàn Lítíréṣọ̀ & Ìbéèrè Tó Lè Dáyéé ṣẹ́lẹ̀
Tẹle iṣẹ ṣiṣe rẹ ati ilọsiwaju rẹ.
Àlàyé tí ó jinlẹ̀ fún ìmòye tó jinlẹ̀.