Flashcards
Blood homework
Flashcards do conjunto (16)
- 1What is Blood Plasma?* yellow fluid
*transports blood cells and platelets around the body
* contains a number of substances, including proteins - 2What is Plasma?the largest component of blood
about 55% of its overall content.
mainly made of water
surrounds the blood cells, carrying them around the body. - 3What does it do?maintain blood pressure and regulates body temperature
- 4What else does it do?It contains a complex mix of substances used by the body to perform important functions. These substances include minerals, salts, hormones and proteins
- 5What are white blood cells?White blood cells protect the body from disease
- 6What are platelets?tiny blood cells that help your body form clots to stop bleeding
Smallest cell type in blood - 7A few facts about plateletsmade in your bone marrow along with your white and red blood cells
Under a microscope, a platelet looks like a tiny plate
help your body control bleeding - 8What are red blood cells?carrying fresh oxygen throughout the body
remove carbon dioxide from your body, transporting it to the lungs for you to exhale
Made in bone marrow - 9What is haemoglobin?protein molecule in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs.
- 10What does haemoglobin form with oxygen?Oxyhaemoglobin
- 11How does haemoglobin relate to the colour of blood?Haemoglobin absorbs oxygen to form bright red oxyhaemoglobin
- 12What are blood vessels?a tubular structure carrying blood through the tissues and organs; a vein, artery, or capillary
- 13What does an artery do?Carry blood away from the heart (always oxygenated apart from the pulmonary artery which goes to the lungs)
Have thick muscular walls
Have small passageways for blood (internal lumen)
Contain blood under high pressure - 14What does a vein do?Carry blood to the heart (always de-oxygenated apart from the pulmonary vein which goes from the lungs to the heart)
Have thin walls
Have larger internal lumen
Contain blood under low pressure
Have valves to prevent blood flowing backwards - 15What does a capillary do?Found in the muscles and lungs
Microscopic – one cell thick
Very low blood pressure
Where gas exchange takes place. Oxygen passes through the capillary wall and into the tissues, carbon dioxide passes from the tissues into the blood - 16—
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- FlashCards sobre Blood homework, criado por vicki proctor em 18-09-2017.
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