Embedded Files
objectives
objectives
- Describe the function of red blood cells, white blood cells, platelets and plasma
What is Blood?
What is Blood?
- Blood is a transport medium
What is Transported by Blood?
What is Transported by Blood?
- Nutrients (e.g. glucose, amino acids)
- Antibodies (protein molecules involved in immunity)
- Carbon dioxide (waste product of aerobic respiration)
- Hormones (transported from gland to target cells)
- Oxygen (reactant for aerobic respiration)
- Urea (nitrogenous waste filtered out of the blood by kidneys)
- Heat (skin arterioles can change diameter in order to gain or lose heat)
Components of Blood
Components of Blood
- Plasma – liquid portion of the blood
- Erythrocytes – (red blood cells) – carry oxygen (and some carbon dioxide)
- Leucocytes – (white blood cells) – protect the body against infection – phagocytes and lymphocytes
- Platelets – cell fragments assist in clotting
video activity
video activity
Watch the video and Copy the table below but rearrange the Descriptions and Roles to match the correct Component of Blood
Composition of Blood
Composition of Blood
video activity
video activity
- Watch the following short clip.
- Draw a red blood cell and write down the adaptations of red blood cells that make them suitable for the transport of oxygen.
ICYMI! Adaptations of Red Blood Cells
ICYMI! Adaptations of Red Blood Cells
Platelets
Platelets
- If the skin is cut, exposure to the air stimulates the platelets to produce a chemical.
- This chemical causes the soluble plasma protein fibrinogen to change into insoluble fibres of fibrin. The fibrin forms a network across the wound, in which red blood cells become trapped.
- This forms a clot, which prevents further blood loss and entry of pathogens. The clot develops into a scab to protect the tissue as new skin grows.
activity - 20 Questions!
activity - 20 Questions!
- Which part has a nucleus?
- Which is the liquid part of the blood?
- Which carries nutrients such as glucose?
- Which carries oxygen?
- Which cell does not have a nucleus?
- Which contains haemoglobin?
- Which is not a proper cell, just a fragment?
- Which digests microbes?
- Which makes antibodies?
- Which has a biconcave disc shape?
- Which increases in number if we get an infection?
- Which carries hormones?
- Which is shaped to have a large surface area?
- Which carries carbon dioxide?
- Which helps the blood to clot and make a scab?
- Which is a straw coloured liquid?
- Which is mis-shaped in sickle cell anaemia?
- Which has two types?
- Also known as red blood cells?
- Also known as white blood cells?
Page updated
Report abuse