How can we help?
You can also find more resources in our
Select a category
Something is confusing
Something is broken
I have a suggestion
What is your email?
What is 1 + 3?
Human Biology & Health
process by which organisms maintain a relatively stable internal environment
material between the cell membrane and the nucleus
tissue composed of fibers that can contract, causing movement of an organ or part of the body
the tissue forming the outer layer of the body surface and lining the alimentary canal and other hollow structures
a condition in which the body's bones become weak and break easily
Hard, dense bone tissue that is beneath the outer membrane of a bone
Layer of Bone tissue having many small spaces and found just inside the layer of compact bone
(anatomy) the point of connection between two bones or elements of a skeleton (especially if the articulation allows motion)
a disease of the joints that makes movement painful
muscle attached to the skeleton, making movement possible, another name for skeletal muscle
involuntary muscle found in internal organs
the muscle tissue of the heart
a muscle that is connected at either or both ends to a bone and so move parts of the skeleton
any malignant growth or tumor caused by abnormal and uncontrolled cell division