Skeletal and Muscular Systems

Front

Functions of the skeletal system: Protection

Back

The skeletal system shields organs, such as the ribs protecting the lungs and heart.

Front

Axial Skeleton includes the skull, vertebral column, ribs, and sternum. It supports and protects vital organs.

Back

Appendicular Skeleton includes limbs, shoulder, and pelvic girdles. It enables movement.

Front

Sternum and vertebrae are part of the axial skeleton.

Back

Limbs are part of the appendicular skeleton.

Front

Examples of Irregular Bones

Back

Irregular bones include vertebrae.

Front

Fibrocartilage is found in intervertebral discs and pubic symphysis.

Back

The discs between vertebrae are made of fibrocartilage.

Front

Ball and socket joints provide the most mobility and are found in the shoulder and hip.

Back

Ball and socket joints allow for a wide range of movement, including rotation, making them highly mobile.

Front

Hinge joints, such as those in the elbow and knee, allow for flexion and extension movements.

Back

Hinge joints are responsible for bending and straightening motions, like those seen in the elbow and knee.

Front

Pivot joints, like the atlas-axis and radioulnar joints, enable rotational movement.

Back

Pivot joints allow one bone to rotate around another, facilitating movements like turning the head or rotating the forearm.

Front

The elbow (humerus-ulna) is an example of a hinge joint, while the radioulnar joint is a pivot joint.

Back

Hinge joints allow bending and straightening, while pivot joints enable rotational movement.

Front

Skeletal muscles are attached to bones, are voluntary, and have a striated appearance.

Back

Skeletal muscles are under conscious control and are responsible for body movements.