This is a force drawing human anatomy pdf article. Follow the link for more information.
Anatomy is a branch of natural science dealing with the structural organization of living things. It is an old science, having its beginnings in prehistoric times. Human compared to elephant frame. It includes the appearance and position of the various parts, the materials from which they are composed, their locations and their relationships with other parts. Anatomy can be studied using both invasive and non-invasive methods with the goal of obtaining information about the structure and organization of organs and systems.
However, substantially the same structures and tissues are found throughout the rest of the animal kingdom and the term also includes the anatomy of other animals. Vacuoles, when present, are more in number and much smaller than those in the plant cell. Connective tissue gives shape to organs and holds them in place. Collagen plays a major part in organizing and maintaining tissues. There are many different types of epithelium, modified to suit a particular function. It contracts slowly but maintains contractibility over a wide range of stretch lengths. Skeletal muscle contracts rapidly but has a limited range of extension.
It is found in the movement of appendages and jaws. Obliquely striated muscle is intermediate between the other two. In higher animals striated muscles occur in bundles attached to bone to provide movement and are often arranged in antagonistic sets. In simple animals, receptor neurons in the body wall cause a local reaction to a stimulus.