Flea bites in humans are caused by fleas, which are parasitic insects. Learn about the symptoms, diagnosis, treatment, complications, and prevention of flea bites.
Niacin is a type of organic compound that dilates blood vessels within the human body. A niacin detox is based on the premise that ingesting niacin will help to increase blood flow, which will, in turn, flush fats and toxins from the body. Those who are proponents of the niacin detox ...
What a lot of people are posting about sounds like angiomas, which are harmless clusters of blood vessels forming at the surface of the skin, usually in the form of a small red bump. They are usually rather small, but can become the size of a pea or larger if broken open multiple time...
The human body can be broken down in a number of ways, and systems generally have multiple purposes, but I would argue that skin is an organ made up of parts from several systems, rather than trying to label it as a system itself. ...
The winners of Nikon’s annual Small World photography contest reveal tiny marvels of the natural world that are normally hidden from sight.
9-1 Scheme of blood vessels 9-2 The human heart.. 9-3 Scheme of heart valves. 9-4 Cardiovascular circulatory patterns 9-5 Main arteries of the human body 9-6 Main veins of the human body 9-7 The human lymphatic system 10-1 The endocrine glands of the human body and their locations...
The blood vessels contract in most of the body, which redirects the blood toward the heart, lungs, and major muscle groups to help fuel the reaction. When a person encounters a potentially dangerous situation, the hypothalamus in the brain signals the adrenal glands to release adrenaline and ...
It is interlaced, yet it is flexible. Since the fibers have a loose organization, they allow for movement of the areas bound by the areolar tissue. Kind of like a good mother, areolar tissue provides guidance and personal space at the same time. It is nurturing with its blood vessels, bu...
The heart contains valves between chambers and vessels to ensure one-way flow of blood. The tricuspid, pulmonary, mitral and aortic valves open and close in coordination with heart contractions. Heart valves can become damaged, leading to complications. ...
Is your skin itching, breaking out, covered in a rash, or playing host to spots of some sort? It may be the result of infection, a chronic skin condition, or contact with an allergen or irritant. This WebMD slideshow shows you how to spot skin problems c