Blood is a fluid that transports oxygen and nutrients around the body in many animals and humans and consists of both red blood cells, white blood cells, plasma, and platelets. An average adult human has about 5 liters of blood circulating in their body.
Components of blood:
- Red blood cells – their main role is to transport oxygen
- White blood cells – the cells of the immune system which defend the body against infections
- Platelets – important for blood clotting and tissue repair
- Plasma - the liquid part of the blood which carries the blood cells and other substances around the body.
World's largest food, health, wellness and weight loss encyclopedia
If you are a medical professional or an expert in any field of medicine, please join us in building the world's largest weight loss and wellness encyclopedia created by experts in the field, not by the crowd.
Support our sponsors
Locations for losing weight and sleeping better
North East Philadelphia
King of Prussia
|Health science - Medicine|
|Anesthesiology - Dermatology - Emergency Medicine - General practice - Intensive care medicine - Internal medicine - Neurology - Obstetrics & Gynecology - Pediatrics - Podiatry - Public Health & Occupational Medicine - Psychiatry - Radiology - Surgery|
|Branches of Internal medicine|
|Cardiology - Endocrinology - Gastroenterology - Hematology - Infectious diseases - Nephrology - Oncology - Pulmonology - Rheumatology|
|Branches of Surgery|
|General surgery - Cardiothoracic surgery - Neurosurgery - Ophthalmology - Orthopedic surgery - Otolaryngology (ENT) - Plastic surgery - Podiatric surgery - Urology - Vascular surgery|