Articles: The Human Body
The Body
With regard to living things, a body is the integral physical material of an individual, and contrasts with soul, personality and behavior. In some contexts, a superficial element of a body, such as hair may be regarded as not a part of it, even while attached. … Read more
Muscle
Muscle is one of the four tissue types. The other three types are: epithelium, connective tissue and nervous tissue. The primary purpose of muscle tissue is to contract. Muscle contraction is used to move parts of the body, as well as to move substances within the body. … Read more
The Shoulder
What Are the Structures of the Shoulder and How Does the Shoulder Function?
The shoulder joint is composed of three bones: the clavicle (collarbone), the scapula (shoulder blade), and the humerus (upper arm bone) (see diagram). … Read more
Fascia and Myofascia
Fascia is the semiflexible fibrous membrane of connective tissue that binds together the various components of the body. Pockets in the fascia contain the various organs of the body.
The myofascia covers, supports and separates the skeletal muscles. Each muscle fiber is wrapped with myofascia, bundles of those fibers are wrapped with myofascia, and the whole muscle is also wrapped in myofascia. Myofascial tissue is dynamic: under strain it increases in density and relative rigidity, giving the muscles more support
In healthy non-fibrotic fascia, collagen fibers are cross-linked to a degree that creates stability. … Read more
Epithelium
Epithelium is a tissue composed of epithelial cells. Such tissue tends to surround parts of the body, somewhat like a cell membrane. It is also used to form glands.
The epithelium is usually the layer of cells ‘closer’ to the outside world. … Read more
Connective Tissue Components
The connective tissues serve many purposes in the body:
· They provide structure.
· They serve as packing.
· They provide insulation, and
· They are one medium for the defense of the body. … Read more
Connective Tissue
Connective tissue is any type of biological tissue with an extensive extracellular matrix. There are several basic types:
Bone contains specialized cells called osteocytes embedded in a mineralized extracellular matrix, and functions for general support. … Read more
The Neck
The neck is the part of the body on many limbed vertebrates that distinguishes the head from the torso or trunk. An anatomical description of the human neck follows.
Anatomy of the (human) neck
In the middle line below the chin can be felt the body of the hyoid bone, just below which is the prominence of the thyroid cartilage called “Adam’s apple,” better marked in men than in women. … Read more
Skeletal Muscle
Skeletal muscle is a type of striated muscle, attached to the skeleton. Skeletal muscles are used to facilitate movement, by applying force to bones and joints; via contraction. They generally contract voluntarily (via nerve stimulation), although they can contract involuntarily. … Read more
Immune System
The immune system of a multicellular organism has several functions. It acts primarily as a defense against foreign pathogens (such as viruses, bacteria, parasites), and some poisons. It also functions in the return of extracellular fluid to the blood, and the formation of white blood cells. … Read more