skeletal + muscle system

The central nervous system is protected by

Axial skeleton

Organized in circular units (osteons)

Compact bone

Strong, replaces cartilage

Spongy bone

What are the circular units of compact bone called?

Osteons

Carpal

Wrist

Tarsal

Ankle

Lateral and vertical movement (wrists and ankles)

Gliding

Bend in one direction (knee and elbow)

Hinge

Rotating movement in all directions (hips and shoulders)

Ball and socket

Cartilage between vertebrae, allows little movement

Slightly moveable

Pivot for skull, allows head to rotate

Pivot

Don’t move (skull)

Immovable joint

A plate of cartilage near each end of the long bone

Growth plate

A layer of fibrous connective tissue that covers the outer surface of the bone

Perosteum

Immovable joints

Suture

Type of connective tissue that connects muscle to bone

Tendon

What job do ligaments have?

Hold bones together

Form edges of sarcomere

Z disc

Type of muscle cardiac muscle

Involuntary

Type of muscle smooth muscle

Involuntary

Type of muscle skeletal muscle

Voluntary

Osteocytes live in

Haversian canals

What is synergist

Helps maintain muscle to move

What is a prime mover

Main muscle

Myosin filaments in a sacrum act as a unit because they are held together by the

Z disc

Synovial fluid

Act as a shock absorber for joints

What type of joints are knuckles?

Hinge

What type of bone is found in the epiphysis?

Spongy

What makes up the active growth plate?

Cartilage

What type of muscle is your diaphragm?

Skeletal

What type of muscle moves food through the esophagus?

Smooth