CAPILLLARY BED WITHIN THE SKIN
A capillary bed is a concentration of capillaries which supply blood to a specific organ or area of the body.
A network of 10-100 capillaries connecting arterioles and venules.
Capillary bed is a term use to refer to a network of capillaries which are small blood vessels in the hypo-dermis which is the subcutaneous layer.
Supplies the capillary network with blood by the arterioles and drains the blood by the venules.
Capillaries are tiny bloody vessel which enables exchange of oxygen, carbon dioxide water and salts.
When blood reaches the tiny capillaries nutrients, gasses and waste products can be exchanged
Separate capillaries are part of the capillary bed which is a capillary network.
Capillary beds are an Ideal place for exchange of
…show more content…
Still do add shape of milia?
These may appear in clusters, they are most often seen around the eyes, cheeks, nose, and even on the eye lids or lash line and water line.
Identify the physiological origins of MOLES
Other names for moles be known as beauty marks or beauty spots.
Moles are small coloured growth spots on the skins surface, they are made up from cells called melanocytes with are lots of cells clustered together.
Melanocytes produce the colour of the mole.
Moles will be coloured brown to dark brown some may appear black, exposure to UV ray will darken the mole.
These can appear as flat, raised, smooth or rough some may even have hairs growing from them.
SIZES AND SHAPES!
Moles can be found anywhere on the body but are more common in areas that exposed to UV rays.
Moles are likely to appear in the first 30 years of your life or they may likely to appear when you are exposed to UV rays such as outside in the sun or even on tanning beds.
When assessing a mole to make sure its non-cancerous you should always use the ABCD, first one stated below is for Normal moles
Asymmetry(symmetrical)
Borders(even)
Colour (one colour)
Diameter (smaller than ¼
The hair of the scalp is longer and more flexible, while the hair of the eyebrows tends to be short and stiff. Oval shaped hair shafts produce wavy hair, flat hair shafts create curly hair and hair shafts that are perfectly round create straight hair. There are also different types of melanin, a natural compound responsible for the production of color in the eyes, skin and hair. There is yellow, brown and black melanin, each produced by melanocytes located at the follicle base. With age, melanin production decreases, causing greying of hair. (Applegate & Saunders, 2001, pp
The smallest arteries are called arterioles and they play a vital role in microcirculation. Microcirculation deals with the circulation of blood from arterioles to capillaries to venules the smallest veins. The liver, spleen and bone marrow contain vessel structures called sinusoids instead of capillaries. In these structures blood flows from arterioles to sinusoids to venules.
Melanocytes, embryologically derived from the neural crest, are distributed in the epidermis and thus are found throughout the skin. They produce a brown pigment known as melanin and are responsible for racial variation in skin color and also the color of moles. Malignant degeneration of the melanocyte gives rise to the tumor, melanoma, of which there are four subtypes. These are: superficial spreading, nodular, lentigo maligna, and acral lentiginous melanomas, accounting for 70%, 15% to 30%, 4% to 10%, and 2% to 8% of cases, respectively. Malignant melanoma may develop anywhere on the body. In men, it is most common on the trunk. In women, it is most common on the back or legs. The subtype also may influence where the tumor develops, lentigo melanoma is more common on the face while acral lentiginous melanoma is more common on the palms of the hand, soles of the feet, or in the nail beds.
The cardiovascular system - The cardiovascular system is responsible for transporting nutrients and removing gaseous waste from the body. It consists of the heart, which powers the whole process, the veins, arteries, and capillaries, which deliver oxygen to tissue at the cellular level. The cardiovascular system carries blood that is low in oxygen away from the heart to the lungs via arteries, where oxygen levels are restored through the air once oxygenated, this blood is then carried throughout the body via arteries, keeping our organs and tissue alive. The cardiovascular system is the workhorse of the body, continuously moving to push blood to the cells. If this important system ceases its work, the body dies.
Malignant melanoma is usually diagnosed by the doctor looking at a certain area in the skin that might raise concern. The doctor will then perform a skin biopsy which is known as removing all or a part of the skin area that is infected while under a local anesthesia and sending the specimen that was collected to a pathologist to be looked at. The skin biopsy report might show an atypical mole, a melanoma that might need surgery, and a benign condition that doctor wont need to treat. Some doctors might also use a technique called dermatoscopy which is when they cover a suspicious spot with oil and examine it with a brightly lit magnifying instrument.
Superficial spreading melanoma spreads slowly on the top layers of the skin before it may begin to penetrate deeper layers of skin. A flat or slightly raised, discolored (tan, brown, black, red, blue or white), and asymmetrical patch of skin. are likely indicators of its presence. In this regard, superficial spreading melanoma may begin with previously benign mole. This type of melanoma is more common in young people, and it accounts for 70 percent of all melanoma diagnosis.
The endothelium is a cell layer that is lined on the interior surface of lymphatic vessels and blood vessels, which are made up of endothelial cells (Dorland, 2012).
Outward appearances along with genetics have a lot to do with chances of receiving melanoma. Fair skinned individuals with either blonde or red hair with blue or green eyes are more susceptible to get skin cancer. If one is to have close relatives who have been diagnosed with skin cancer this puts individuals at a higher risk. If you live at high altitudes, live in sunny areas (nearest the equator), have had one or more blistering sunburns during childhood, and use tanning devices this puts a person at rick for melanoma skin cancer. Certain types of moles and birthmarks may become cancerous.
Oxygen is going from the capillaries to the tissues, and carbon dioxide from. tissues taken up into the capillaries. Arteries have to be strong as well as flexible because of the pressure of the blood being pumped. through the venous system. Veins get bigger when they get closer to the heart of the world.
Here, deep in the lungs, oxygen diffuses through the alveoli walls and into the blood in the capillaries and gaseous waste products in the blood—mainly carbon dioxide—diffuse through the capillary walls and into the alveoli. But if something prevents the oxygen from reaching t...
Human pigmentation is influenced by hemoglobins within blood vessels in the skin, carotene and melanins. Melanin, the basis of pigmentation, can be found in the forms of eumelanin and phaeomelanin. Eumelanin is the brown-black pigment located in the skin, hair, and eyes. Phaeomelanin is a yellow to reddish-brown pigment found in small quantities within the skin, eyes, and red hair. Because of these two pigments, to a greater or lesser degree, we have the variation in human pigmentation that is seen today.
The circulatory system and respiratory system share a highly important relationship that is crucial to maintaining the life of an organism. In order for bodily processes to be performed, energy to be created, and homeostasis to be maintained, the exchange of oxygen from the external environment to the intracellular environment is performed by the relationship of these two systems. Starting at the heart, deoxygenated/carbon-dioxide (CO2)-rich blood is moved in through the superior and inferior vena cava into the right atrium, then into the right ventricle when the heart is relaxed. As the heart contracts, the deoxygenated blood is pumped through the pulmonary arteries to capillaries in the lungs. As the organism breathes and intakes oxygenated air, oxygen is exchanged with CO2 in the blood at the capillaries. As the organism breathes out, it expels the CO2 into the external environment. For the blood in the capillaries, it is then moved into pulmonary veins and make
The Circulatory System is a transportation and cooling system for the body. The Red Blood Cells act like billions of little mail men carrying all kinds of things that are needed by the cells, also RBC's carry oxygen and nutrients to the cells. All cells in the body require oxygen to remain alive. Also there is another kind of cells called white blood cells moving in the system. Why blood cells protect from bacteria and other things that are harmful. The Circulatory system contains vein arteries, veins are used to carry blood to the heart and arteries to carry the blood away. The blood inside veins is where most of the oxygen and nutrients are and is called deoxygenated and the color of the blood is dark red. However, blood in the arteries are also full of oxygen but is a bright red. The main components of the circulatory system are the heart, blood, and blood vessels.
The first sign of melanoma is often a change in the size, shape, or color of an existing mole or the appearance of a new mole. Men most commonly develop melanoma on the trunk, particularly the back, and women on the legs or arms. Melanoma develops in a manner similar to other cancer types. A cell's DNA genes, which control cell division and reproduction, become damaged. The damaged genes cause the cell to divide and grow without control or order, eventually becoming a malignant tumor.
The roles of the circulatory and respiratory system both carry important responsibilities and are essential in their jobs to the human body. The circulatory system is one, if not the, most important system in the human body. The circulatory system is made up of the heart, blood, and blood vessels. Within the blood vessels, there are three types: arteries, veins, and capillaries. The heart is an organ made up of cardiac muscle that has a role similar to a pump. When the muscles in the heart contract, it pumps fresh blood away from the heart, through a main artery called the aorta, and to the organs and cells of the body. Nutrients and oxygen then enter the cells through diffusion of the tissues. The respiratory system transports oxygen to the circulatory system. When transporting oxygen to the circulatory system, this will in turn transport oxygen to the rest of the cells in the body. Aside from transporting oxygen to the body, the respiratory system also plays a role in the removal of carbon dioxide and other contaminants in the body. These two systems effectively and efficiently work together in order to supply the body with oxygen and remove carbon dioxide and any other