Unit 3

unit 3 quiz flashcards

Skeletal System

The framework of bones, joints, cartilage, tendons, and ligaments that provides support, protection, and movement for the body.

Axial Skeleton

The division of the skeletal system that includes the skull, vertebral column, and rib cage, providing support and protection for the organs in the central part of the body.

Appendicular Skeleton

The division of the skeletal system that includes the bones of the upper and lower limbs, as well as the shoulder and pelvic girdles, allowing for movement and locomotion.

Bone Functions

The various roles of bones in the body, including support, protection of organs, movement, storage of minerals and fats, and blood cell formation.

Compact Bone

The dense outer part of the bone, found in the diaphysis of long bones and as a thinner surface in other bones, consisting of osteons as the structural units.

Spongy Bone

The bone tissue with open spaces, located in the epiphyses of long bones and the center of other bones, lacking osteons.

Long Bone

A type of bone with a shaft at both ends, mostly composed of compact bone, such as the femur and humerus.

Short Bone

A cube-shaped bone mostly composed of spongy bone, such as the carpals and tarsals.

Flat Bone

A thin and flat bone with a thin layer of compact bone surrounding a larger layer of spongy bone, such as the skull, rib, and sternum.

Irregular Bone

A bone that does not fit into the other classification categories, such as the vertebrae and hip bones.