Joints!

There are three structural classification in the joint family. They are fibrous, cartilaginous, and synovial. They blind joints together. There are also three other functional classes of the joints that are on the amount of movement they have. The first is synarthroses, which is immovable. The second is amphiarthroses, and it is slightly movable. The third is diarthroses, and that is able to move freely. There is also fibrous structural joints, which means that bones are joined and filled by fibrous tissue. And there is no joint cavity. These bones are very tightly bind together. One of the types of fibrous structural joints is syndsmose. This is connected with tibia ad fibula and movement mostly in immovable. Then there are synovial joints. Synovial joints have articular cartilage, synovial fluid, and reinforcing ligaments. These joints are bones that are separated by fluid. It is located the limb joints. There are two muscle attached across the joints, they are origin that are immovable and insertion that can be able to move. Arthritis is one of the most common it joint problems. There are more than 100 different types of diseases that damage the joints. People that getting older tend to get it easier because the cartilage gets destroyed faster. The end of the bone thickens and enlargers which causes the bone to have spurs and painful to move. This can effect a lot of parts in you body such as: knuckles, knees, and spins.

Skin*

SKIN:

Skin is composed of different tissues that helps protect from sun rays that could enter the body. And it also helps regulate the body temp, and it restores water loss. Skin has vitamin D, that help the immune system and waste system. There are 2 layers, the first is the epidermis,squamous epithelium then the dermis, thicker and made out of elastic fibers. Collagen is inside the skin which help smooth the muscle tissue, nervous tissue, and the blood. There are types skin cancers and burns that can damage the skin.

SKIN CANCERS:

There are 1 million cases a year and it kept increase more and more each year.  There are three different types of skin cancer from the least to the more dangerous stages:Basel cell carcinoma,Squamous cell carcinoma,Melanoma. Skin cancer in most common in light skinned people that are usually outside a lot. Skin cancer has many different looks like flat or raised, dry, hard and different colors like black or brown.It is mostly found in the neck scalp or face. There are many ways to prevent from getting skin cancer.  Limiting recreational sun exposure, avoiding unprotected exposure to the sun during peak radiation times, wearing hats and tightly protecting clothing while outdoors. Also regularly using a waterproof sunscreen with UVA protection and SPF 30 or higher, and avoiding the use of tanning beds.

BURNS:

Common burns would be the minor sun burns that mostly everyone tends to get. A 1st degree burn injures the epidermis. It will heal most likely in a week or so without scaring. A 2nd degree burn damages the epidermis and the deep partial thinness. You get this burns from hot objects and it heals without scaring if it is not infected. And a 3rd degree destroys the epidermis, dermis, and structures of the skin. This cause skin the become very dry. This is cause by hot object, chemicals, flame, hot liquid. And it heals only if there is a growth epithelial cells.

Tissues*

Tissue Engineering* New Approaches and Advancements

The new resceach today is incredible! I knew something like this would be created but never thought in my generation.Scientist discovered a way to replace body parts, by scolloping a artificial staffal exactly like the body part and then seeding their own cells into the body. So that the body can not reject it. An example that they did was grow and human ear on a mouse. They formed the ear into the proper size and shape, and implanted cartilage cells inside the mouse. After it was successful they decided it was advanced enough to try it on a human. In 2008 a lady in Barsalona, Spain was diagnosed with tuberculosis making it difficult for her to breath.So they inserted a new wind pipe her body. And it could never reject because it is made out of her own cells. The surgery went so well that in just 4 days after surgery she was home.I believe it will be reality in couple years.

Directional Terms

see more of my photos

Homeostasis* Hot and Cold

Homeostasis*

Homeostasis:The tendency of an organism or cell to regulate its internalconditions, such as the chemical composition of its body fluids,so as to maintain health and functioning, regardless of outsideconditions. The organism or cell maintains homeostasis bymonitoring its internal conditions and responding appropriately when these conditions deviate from their optimal state. Themaintenance of a steady body temperature in warm-bloodedanimals is an example of homeostasis. In human beings, the homeostatic regulation of body temperature involves such mechanisms as sweating when the internal temperature becomes excessive and shivering to produce heat, as well as the generation of heat through metabolic processes when the internal temperature falls too low. 

http://dictionary.reference.com/browse/homeostasis

If your ever working out on a hot summer day, your body will start to sweat. It does that because it needs to cool the body down. Homestasis controls the body temperature and also helps stable the body's internal environment from the outside world.This is how I understand it: in the summer your body tends to sweat to cool off. And in the winter your body starts to shiver to get warm. There are three interdependent components of control mechanism which are Receptor,Control center, effector. There are also negative and positive feedback from homeostasis. The negative feedback are when glucose levels either get too high or drop. And the positive feedback would be regulation of blood clotting.