da Sophia Hakim - Rick Hansen SS (2542) mancano 5 anni
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About our Blood
Blood, a vital bodily fluid, has multiple components each performing essential functions. Platelets, also known as thrombocytes, originate from large cells in the bone marrow and facilitate blood clotting to prevent excessive bleeding and support wound healing.
Monocyte (Agranulocytes): fights off bacteria, viruses and fungi. One of the biggest type of WBC in immune system. Develop into macrophages in the tissue
Basophil (Granulocytes): Release histamine (causes smooth muscle contraction and dilation of capillaries) and other mediators for inflammation. They have heparin, an anticoagulant (which prevents the blood from becoming a semi-solid).
Lymphocyte (Agranulocytes): function to eliminate the antigen by releasing antibodies or signaling other cells of the immune system
Lymphocyte
Eosinophils (Granulocytes): They kill parasitic worms. Their efforts are important with asthma and allergies.
Neutrophils (Granulocytes): They Phagocytize bacteria (ingest bacteria).
There are 5 categories of white blood cells
They are produced in the bone marrow
Their purpose is to fight infection.
These cells are also called leukocytes
Plasma
Plasma: is 92% water with various salts and proteins.
Plasma contains fibrinogen which prevents blood clots.
Transports antibodies to fight infections (in various parts of body).
Is supposed to transport nutrients wastes, water and carbon dioxide.
Why do we have it?
Heals injured tissue and preserves some alkalinity in body tissues.
can carry communication molecules, fight infection and maintain water balance with kidneys.
Transports Oxygen and Carbon dioxide between lungs and body tissues.
Blood transports fats, proteins and carbohydrates
Platelets
Functions in blood clotting, which prevents excess bleeding when a blood vessel is injured
Thrombocytes: large cells in the bone marrow
Help blood clots to slow or stop bleeding
Thrombocytes
Helps wounds heal
Red Blood Cells
It is produced in the red bone marrow
Do not have nucleii; have double concave shape
Function is for oxygen transport
Erythrocytes: contain a pigment of hemoglobin and helps transport oxygen and carbon dioxide to and from tissues