SKELETON SYSTEM

• A Hinge joint is defined as the joint between two bones that allows movement only in one plane. For instance, human fingers, toes, elbows, knees, and ankles contain hinge joints.

Rock salt helps in maintaining the normal pH of the blood, muscle motility and detoxing the human body.

There are three types of joints in the human body based on functional classification. These are:
(1) Synarthrosis or Immovable
(2) Amphiarthrosis or slightly moveable
(3) Diarthrosis or freely movable
Based on structural classification in the human body, there are three types of joints -
(1) Fibrous joints
(2) Cartilaginous joints
(3) Synovial joints

Ball and socket joint is a natural or manufactured joint or coupling in which a partially-spherical end lies in a socket, allowing multi-directional movement and rotation. In the case of the hip joint, the head of the upper leg fits into pocket created by the pelvis allowing multi-directional movement and rotation.

Suture Joint is an immovable joint. It is found only in plate-like flat bones such as the bones of the skull. Synovial joints are often found in the bones of the knee, neck, shoulder, etc. It is rotatable and flexible.

The Pivotal Joint is a joint located at the base of the skull in the body, which connects the neck and the head.

Spine, or backbone, is our body’s central support structure. It connects different parts of our musculoskeletal system.
The spine has 33 stacked vertebrae (small bones) that form the spinal canal. The spinal canal is a tunnel that houses the spinal cord and nerves, protecting them from injury. Most vertebrae move to allow for a range of motion. The lowest vertebrae (sacrum and coccyx) are fused together and don’t move.

Skeletal muscles are examples of muscular tissue. In addition to muscular tissues, all other types of mesodermic tissues in the adult come under the category of "connective tissues", such as bone, cartilage, blood, etc. Blood is a liquid connective tissue. Cartilage is a type of connective tissue that has enough space between cells. It is present in the nose, ears, etc.

Ribs are described based on their location and connection with the sternum. All ribs are attached posteriorly to the thoracic vertebrae and are numbered accordingly from one to twelve. Ribs that articulate directly with the sternum are called true ribs, whereas those that do not articulate directly are termed false ribs.

• The human hand has 27 bones: the carpus or wrist accounts for 8, the metacarpals or palm contains five; the remaining fourteen are digital bones; fingers and thumb. The palm has five bones known as metacarpal bones, one to each of the 5 digits.