Skeletal System and Joints Quiz

Bone is a living organ because it contains multiple tissue types, including connective, nervous, epithelial, and muscle tissues working together.

Bone is a living organ because it is the hardest substance in the body.

Bone is a living organ because it does not change after birth.

Bone is a living organ because it is entirely made of minerals without cells.

Storage of key minerals

Site of blood cell formation

Production of key hormones that regulate processes like glucose and blood calcium levels

Digestion of food

Gas exchange in the lungs

Both are part of the appendicular skeleton and are critical for movement; their bones are organized similarly.

Upper limbs are part of the axial skeleton while lower limbs are not.

Lower limbs are not involved in movement while upper limbs are.

Only the upper limbs contain long bones.

It consists of the clavicles and scapulae; clavicles attach to the sternum and scapulae, and the scapula connects to the humerus and clavicle. Being attached to the rib cage and vertebral column only by muscles gives the pectoral girdle high mobility and flexibility.

It consists of the sacrum and hip bones joined by extremely strong ligaments, making it very sturdy with much less mobility.

It is fused directly to the rib cage by rigid ligaments, eliminating mobility.

It protects the reproductive organs primarily and does not connect to the upper limbs.

Females have a much wider birth canal and pubic arch to accommodate a growing fetus and the birth of an infant.

Females have a narrower birth canal to support faster running.

Males have a wider pubic arch to allow greater mobility.

There is no structural difference noted between female and male pelvic girdles.

7 pairs directly attached to the sternum

Last 2 pairs of false ribs that do not attach to the rib cage on the anterior side

5 pairs not attached directly to the sternum

Provide support and stability with little movement — example: wrist bones

Highly specialized shape and thus function — example: vertebrae

Have a large surface area for muscle attachment — example: shoulder blades (scapulae)

Act as levers to aid in movement — example: arm bones

Compact bone

Spongy bone

Articular cartilage

Bone marrow

Show where muscles and ligaments attach

Form joints

Reveal where blood vessels and nerves run through

Long

Short

Flat

Irregular

Circular