Seven things to know about how stroke is different for women
Stroke can be devastating for anyone. But the risks and symptoms of a stroke are not always the same in women and men.
7 hours ago
0
0
Stroke can be devastating for anyone. But the risks and symptoms of a stroke are not always the same in women and men.
7 hours ago
0
0
The term 'metabolic syndrome' (MetS) encompasses a group of factors, such as abdominal obesity, hypertension and insulin resistance, that together increase the risk of cardiovascular disease and type 2 diabetes.
12 hours ago
0
23
A St. Louis-based organ transplant agency is exploring unmanned drones as a faster, cheaper method of moving blood samples and medical supplies across the Midwest.
14 hours ago
0
0
In a paper published in Science Translational Medicine, researchers from City of Hope, a U.S. cancer research and treatment organization and a research center for diabetes and other life-threatening illnesses, report that ...
May 22, 2024
0
16
Engineers at the University of California San Diego have developed a wearable ultrasound patch that can offer continuous, non-invasive monitoring of blood flow in the brain. The soft and stretchy patch can be comfortably ...
May 22, 2024
0
49
People who eat more ultra-processed foods like soft drinks, chips and cookies may have a higher risk of having memory and thinking problems and having a stroke than those who eat fewer processed foods, according to a new ...
May 22, 2024
0
1
Researchers have developed an approach to "deleting" a blood system affected by leukemia while simultaneously building up a new, healthy system with donor blood stem cells. Writing in the journal Nature, the team reports ...
May 22, 2024
0
34
Regular use of fish oil supplements might increase—rather than lessen—the risk of first-time heart disease and stroke among those in good cardiovascular health, but may slow progression of existing poor cardiovascular ...
May 21, 2024
0
55
The skin or peel of the jaboticaba berry (Plinia jaboticaba), a native of the Brazilian Atlantic Rainforest, is usually thrown away because of its astringency (due to an abundance of mouth-puckering tannins), yet it can be ...
May 21, 2024
0
38
Giving high-risk patients access to an obesity specialist through their regular primary care clinic increased their chances of receiving at least one evidence-based weight-management treatment, and led to more weight lost ...
May 21, 2024
0
9
Blood is a specialized bodily fluid that delivers necessary substances to the body's cells — such as nutrients and oxygen — and transports waste products away from those same cells.
In vertebrates, it is composed of blood cells suspended in a liquid called blood plasma. Plasma, which comprises 55% of blood fluid, is mostly water (90% by volume), and contains dissolved proteins, glucose, mineral ions, hormones, carbon dioxide (plasma being the main medium for excretory product transportation), platelets and blood cells themselves. The blood cells present in blood are mainly red blood cells (also called RBCs or erythrocytes) and white blood cells, including leukocytes and platelets. The most abundant cells in vertebrate blood are red blood cells. These contain hemoglobin, an iron-containing protein, which facilitates transportation of oxygen by reversibly binding to this respiratory gas and greatly increasing its solubility in blood. In contrast, carbon dioxide is almost entirely transported extracellularly dissolved in plasma as bicarbonate ion.
Vertebrate blood is bright-red when its hemoglobin is oxygenated. Some animals, such as crustaceans and mollusks, use hemocyanin to carry oxygen, instead of hemoglobin. Insects and some molluscs use a fluid called hemolymph instead of blood, the difference being that hemolymph is not contained in a closed circulatory system. In most insects, this "blood" does not contain oxygen-carrying molecules such as hemoglobin because their bodies are small enough for their tracheal system to suffice for supplying oxygen.
Jawed vertebrates have an adaptive immune system, based largely on white blood cells. White blood cells help to resist infections and parasites. Platelets are important in the clotting of blood. Arthropods, using hemolymph, have hemocytes as part of their immune system.
Blood is circulated around the body through blood vessels by the pumping action of the heart. In animals having lungs, arterial blood carries oxygen from inhaled air to the tissues of the body, and venous blood carries carbon dioxide, a waste product of metabolism produced by cells, from the tissues to the lungs to be exhaled.
Medical terms related to blood often begin with hemo- or hemato- (also spelled haemo- and haemato-) from the Ancient Greek word αἶμα (haima) for "blood". In terms of anatomy and histology, blood is considered a specialized form of connective tissue, given its origin in the bones and the presence of potential molecular fibers in the form of fibrinogen.
This text uses material from Wikipedia, licensed under CC BY-SA