Skeletal System Quiz

Front

Composition of bones

Back

Living tissue

Answer explanation

Bones are primarily made of living tissue, which includes cells, collagen, and minerals. This composition allows bones to be strong yet flexible, essential for their role in the skeletal system.

Front

No skeleton = ?

Back

Wobbly pile of muscle and organs

Answer explanation

Without a skeleton, there would be no rigid structure to support the body, resulting in a wobbly mass of muscles and organs. The skeleton provides shape and stability, so its absence would lead to a lack of form.

Front

Components of the skeletal system

Back

Bones, cartilage, ligaments

Answer explanation

The skeletal system is primarily made up of bones, cartilage, and ligaments, which provide structure, support, and protection to the body. Other options include components that are not part of the skeletal system.

Front

Appearance of bones in a living person

Back

Full of living cells

Answer explanation

Bones in a living person are not hollow or dead; they are dynamic structures full of living cells that contribute to growth, repair, and overall health. This makes 'full of living cells' the correct choice.

Front

Collarbone

Back

Clavicle

Answer explanation

The clavicle is commonly known as the collarbone. It connects the arm to the body and is located above the first rib, making it easily identifiable.

Front

Mineral stored in bones

Back

Phosphorus

Answer explanation

Phosphorus is a key mineral stored in bones, playing a crucial role in bone structure and health. It works alongside calcium to form the mineral matrix of bones, making it essential for skeletal strength.

Front

Spongy bone location

Back

Center of the bone

Answer explanation

Spongy bone, also known as cancellous bone, is primarily found at the center of bones. It provides structural support and houses bone marrow, unlike compact bone, which forms the outer layer.

Front

Periosteum

Back

Layer covering the bone

Answer explanation

The periosteum is a dense layer of connective tissue that covers the outer surface of bones, providing protection and serving as an attachment point for muscles and tendons. Thus, it is correctly identified as a layer covering the bone.

Front

Growth plates closure age

Back

18 to 25 years

Answer explanation

Growth plates, or epiphyseal plates, typically close between the ages of 18 to 25 years, marking the end of bone lengthening. Before this age, bones can still grow longer as the growth plates remain open.

Front

Joint type similar to a door hinge

Back

Hinge Joint

Answer explanation

The hinge joint allows movement in one direction, similar to a door hinge. It permits flexion and extension, making it the correct choice for this question.