KS3+The+circulatory+system

Recognize and model the basic components of the circulatory system and know their functions which means that: || # One circuit links the heart and lungs([|Pulmonary circulation], wikipedia)
 * Mammals have a **double circulatory system,**
 * 1) The other circuit links the heart with the rest of the body([|Systemic circulation,] wikipedia) ||

Task 1. Identify the parts of Atria (left and right), Ventricles (left and right) and valves. Task 2. Can you name the four main blood vessels of the heart? Task 3. Name the three components of the circulatory system.
 * Vena cava
 * Pulmonary artery
 * Pulmonary vein
 * Aorta


 * [[image:Heart.jpg width="480" height="379"]] || ===What is in the blood?===

= = [|Images from BBC GCSE bitesize] || [|The basic structure of the heart] from intel education [|Circulation] from BBC GCSE bitesize [|Heart animation] from KScience [|Heart simulation and explanation] from sumanasinc.com [|Labelling the heart] from Kscience media type="youtube" key="JA0Wb3gc4mE" width="378" height="283" How heart pumps blood from youtube [|Heart]from Brainpop

Components of the circulatory/cardiovascular system
[|Circulatory system] from Brainpop [|single vs double and open vs closed circulatory system] from ivyroses.com [|Circulation in animals] from biology-questions-and-answers.com
 * 1) The heart: It pumps blood all around the body.
 * 2) Blood vessels: It carries blood through the tissues and organs. There are three types of blood vessel (Arteries, Veins, Capillaries)
 * 3) Blood: Blood is composed of red blood cells, white blood cells, platelets and plasma. It has two main functions. It:
 * provides defence against disease
 * transports compounds, ions, and some elements to and from other tissues and cells

Explain the functions of the blood (red blood cells, white blood cells, plasma, platelets) Recognize and describe the role of red blood cells in transporting oxygen Haemoglobin can also bind carbon dioxide, but to a lesser extent. Carbaminohaemoglobin forms. Some carbon dioxide is carried in this form to the lungs from respiring tissues. The presence of carbon dioxide helps the release of oxygen from haemoglobin, this is known as the Bohr effect. || [|Haemoglobin and oxygen binding] from www.austincc.edu [|The Bohr effect] from www.austincc.edu [|Human circulatory system] from intel education [|Blood] from Brainpiop [|Blood] from biologyreference.com [|Cardiovascular system(Blood)] from www.austincc.edu [|Blood circulation and White blood cell] from BBC GCSE Bitesize [|Transport oxygen in the blood] from www.rsc.org/
 * **Plasma** || Plasma is the liquid part of the blood. The plasma carries the blood cells, carbon dioxide, hormones and waste throughout the body. Plasma is made in the liver. ||
 * **Red blood cells** || Red Blood Cel ls contain haemoglobin. The primary function of hemoglobin is to transport oxygen. They pick up oxygen in the lungs and transport it to all the body cells. Red blood cells are made in the bone marrow.At high oxygen concentrations oxyhaemoglobin forms, but at low oxygen concentrations oxyhaemoglobin dissociates to haemoglobin and oxygen.
 * **White blood cells** || White Blood Cells attack and destroy germs when they enter the body. T hey produce antibodies and destroy harmful microorganisms. When you have an infection your body will produce more White Blood Cells to help fight an infection. They are made in the bone marrow and it is a n important part of the immune system. ||
 * **Platelets** || Platelets are blood cells that p rotect the body by stopping bleeding. When we cut ourselves we have broken a blood vessel and the blood leaks out. Platelets start to clump together to the opening of the damaged blood vessels. As the platelets stick to the opening of the damaged vessel they attract more platelets, fibres and other blood cells to help form clots to seal the broken blood vessel. We call our platelet plugs scabs. ||

[|Armstrong greatest fraud] National geography documentary Youtube [|Lance Armstrong admits to doping] Youtube BBC News [|Blood Doping]

Describe three types of blood vessel (arteries, capillaries and veins) Arteries are blood vessels that carry oxygen rich blood AWAY from the heart (always oxygenated apart from the pulmonary artery which goes to the lungs). They have thick muscular walls with small passageways for blood under high pressure.
 * Arteries** A A Arteries Away.

Veins carry blood back towards the heart (always de-oxygenated apart from the pulmonary vein which goes from the lungs to the heart). They have thin walls and have thinner walls than arteries under low blood pressure. They contain valves to prevent blood flowing backwards.
 * Veins**

Capillaries are tiny blood vessels as thin or thinner than the hairs on your head( Microscopic – one cell thick). Capillaries connect arteries to veins. They are in the muscles and lungs with very low blood pressure. Food substances(nutrients), oxygen passes through the capillary wall and into the tissues, carbon dioxide and wastes pass from the tissues into the blood through the capillary walls.
 * Capillaries**

** Human Circulatory System ** ** Statement of Inquiry: ** Human body systems create relationships with one another to maintain homeostasis with their internal and external environments.

** MYP LINK TO Global Context: **  Identities and Relationships

** Inquiry questions ** Factual question:What is the function of human body systems? Conceptual question: How can we create balance of the human body? Debatable question:If some body organs such as a stomach, a spleen, a lung, a thyroid gland and skin are removed or transplanted, is the quality of life as good as before?

Research disorders (heart attacks, high blood pressure etc) of circulatory system A heart disease caused by narrowing of the arteries carrying the blood to the muscles of the heart, so the heart muscles do not receive enough oxygen. Your task is to research disorder of circulatory system such as heart attacks and high blood pressure then make a 'Keep your heart healthy ' poster to educate people in Shanghai. The poster should include the causes of your chosen disease relating to our cardiovascular system and the methods/suggestions to prevent the disease. In your poster, make a link how exercise should help to prevent cardiovascular diseases using the information below. Due date on 4th November.

When exercising blood does the following things:
 * **Transports** nutrients and waste
 * Delivers **oxygen** to the working muscles
 * Removes heat (**temperature regulation**)
 * Dilutes/carries away lactic acid (**acidic balance**)

[|Heart attack animation] from egs.ie [|Fit for Life: Circulatory System Problems] from BBC Bitesize [|Heart disease and Arrythmia] from medicine.net

Examples of debatable questions for your essays What are the impacts to a patient, people around/involved with the patient, and their environment? Discuss positive and negative factors.


 * Can you account for the risks?**
 * How does the environment affect the risk that people can develop the disease? How should they set up their environment to prevent it?**


 * To what extent is the social life, of a person with the disease, affected?**


 * Can the government provide a strategy to raise awareness or programmes to help prevent or treat the condition?**


 * What about people in poorer communities that do not have easy access to medical facilities? Who should bear the cost of treating the disease? Should it be an individual or societal cost?**

Examples of conceptual questions Why is the spread of disease limited to a particular section of society?

[|Homeostasis] quizlet questions Regulating temperature by sweating media type="file" key="sweating.mp4" width="248" height="207" Vasoconstriction vs Vasodilation media type="file" key="Lido Homeostasis.mp4" width="308" height="247"

Lymphatic System The primary function of the lymphatic system is to transport lymph, a fluid containing infection-fighting white blood cells, throughout the body [|Lymphatic System] from livescience.com [|Lymphatic system] from brainpop

Inside Human Body resources.clie.ucl.ac.uk