Bones & Skeleton
Joints & Movement
Muscles
100

These cells are responsible for bone formation.

Osteoblasts

100

This type of joint allows the greatest range of motion.

Ball-and-Socket

100

This protein forms the thick filaments in skeletal muscle.

Myosin

200

This is the functional unit of compact bone.

Osteon

200

These structures connect bone to bone.

Ligaments

200

This is the functional unit of skeletal muscle.

Sarcomere

300

This structure allows long bones to grow in length.

Epiphyseal Plate

300

This movement decreases the angle between two bones.

Flexion
300

This neurotransmitter is released at the neuromuscular junction.

Acetylcholine

400

This mineral is most abundant in bone tissue.

Calcium
400

This type of synovial joint is found at the elbow.

Hinge
400

This type of contraction produces tension without changing muscle length.

Isometric

500

This bone contains the tibial tuberosity.

Tibia

500

This condition results from degeneration of articular cartilage.

Osteoarthritis

500

This muscle is the prime mover for forearm flexion.

Biceps brachii