Biology - Hormones (Part 3)
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What is the definition of homeostasis?

  • Controlling the internal environment of the body at stable levels (correct)
  • The process of cellular reproduction
  • The breakdown of food into energy
  • The synthesis of hormones in the endocrine system

What is the definition of homeostasis?

Controlling the internal environment of the body at stable levels

Select the correct reasons why maintaining a constant internal environment is important.

  • Your cells need the right conditions in order to function properly (e.g. enzyme action) (correct)
  • It can be dangerous for your health if conditions vary too much from normal levels (correct)
  • It helps in saving energy for metabolic processes
  • It allows for better adaptation to environmental changes

What are the two organs involved with blood glucose control?

<p>The pancreas and the liver</p> Signup and view all the answers

Which two substances control blood glucose concentration?

<p>Insulin and glucagon</p> Signup and view all the answers

Eating foods containing _________ puts glucose into the blood from the small intestine.

<p>carbohydrate</p> Signup and view all the answers

The normal _________ of cells removes glucose from the blood. However, vigorous _______ removes much more glucose from the blood.

<p>metabolism, exercise</p> Signup and view all the answers

Excess glucose can be stored as ________ in the liver and in the muscles. When these stores are full then the excess glucose is stored as lipid (fat) in the ______.

<p>glycogen, tissues</p> Signup and view all the answers

Order the steps of blood glucose control if there is too little glucose:

<p>Step 1 = There is too little glucose in the blood Step 2 = The pancreas stops making insulin and makes glucagon Step 3 = This glucagon in the bloodstream is transferred into glucose by the liver Step 4 = This causes there to be more glucose in the blood</p> Signup and view all the answers

Order the steps of blood glucose control if there is too much glucose:

<p>Step 1 = There is too much glucose in the blood Step 2 = The pancreas stops making glucagon and makes insulin Step 3 = This insulin in the bloodstream allows the liver to transfer glucose into glucagon Step 4 = This causes there to be less glucose in the blood</p> Signup and view all the answers

Describe and explain the steps of blood glucose control if there is too little glucose.

<p>There is too little glucose in the blood. The pancreas stops making insulin and makes glucagon. This glucagon in the bloodstream is transferred into glucose by the liver. This causes there to be more glucose in the blood.</p> Signup and view all the answers

Describe and explain the steps of blood glucose control if there is too much glucose.

<p>There is too much glucose in the blood. The pancreas stops making glucagon and makes insulin. This insulin in the bloodstream allows the liver to transfer glucose into glucagon. This causes there to be less glucose in the blood.</p> Signup and view all the answers

Diabetes is an example of when what doesn't work?

<p>homeostasis (A)</p> Signup and view all the answers

Type 1 diabetes is a condition where the pancreas produces little or no ______. The result is that a person's blood glucose can rise to a level that can ____ them.

<p>insulin, kill</p> Signup and view all the answers

Insulin therapy involves injecting ______ into the subcutaneous tissue from where it will enter the bloodstream. This very effective treatment stops the level of ______ in the body from getting too high.

<p>insulin, glucose</p> Signup and view all the answers

Select the two other things that people with type 1 diabetes have to think about:

<p>Taking regular exercise (B), Limiting the intake of foods rich in simple carbohydrates (e.g. sugars) (A)</p> Signup and view all the answers

Match the types of diabetes to their descriptions:

<p>Type 1 diabetes = Caused by a lack of insulin Type 2 diabetes = The person is resistant to insulin</p> Signup and view all the answers

Explain how type 2 diabetes is caused?

<p>Where the pancreas doesn't produce anough insulin or when a person becomes resistant to insuiln. This causes the blood glucose level to rise to a level that could kill them.</p> Signup and view all the answers

Explain the correlation between obesity and type 2 diabetes.

<p>Obese people have an increased risk of developing type 2 diabetes. Obesity is determined if somone has a body mass index of over 30.</p> Signup and view all the answers

Select the ways in which type 2 diabetes can be controlled: (Select all that apply)

<p>Healthy diet (A), Exercise/losing weight (B), Medication (C), Insulin injections (D)</p> Signup and view all the answers

How do you calculate someone's waist-to-hip ratio?

<p>waist-to-hip ratio = waist circumference / hip circumference</p> Signup and view all the answers

How do you calculate BMI?

<p>BMI = mass/height^2</p> Signup and view all the answers

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