Skeletal System Basics
How many bones are in the body?
206
compact bone
This bone forms the lower jaw
Mandible
The place where two bones meet is called this
Joint OR Articulation
This mineral is stored in large amounts in bones
Calcium
This skeletal division includes the skull, vertebral column, and rib cage.
Axial skeleton
This porous bone tissue contains a lattice of trabeculae
Spongy bone
These paired facial bones make the cheek prominences.
Zygomatic bones
This connective tissue joins bone to bone
Ligament
These structures cushion adjacent vertebrae
Intervertebral discs
This skeletal division contains the limbs and their girdles.
Appendicular skeleton
This is the name of the shaft of a long bone
Diaphysis
This bone forms the back of the skull.
Occipital bone
This joint type is found at the hip and shoulder
Ball-and-socket joint
This bone disorder causes reduced bone mass and greater fracture risk
Osteoporosis
Name the four bone shapes used in classification.
Long, short, flat, and irregular.
These tiny channels allow osteocytes to exchange nutrients
Canaliculi
This butterfly-shaped cranial bone is part of the skull base
Sphenoid bone
This functional joint classification allows essentially no movement
Synarthroses
Name the spinal regions from neck downward
Cervical, thoracic, lumbar
Name five major functions of the skeletal system.
Support, protection, movement, mineral storage, and blood cell formation
Name the tough outer bone covering and the growth region that lengthens long bones
Periosteum and epiphyseal growth plate
Name the bone near the tear drainage passage and the cranial bone forming part of the medial orbit
Lacrimal bone and ethmoid bone
This fluid-filled tube surrounds a tendon to reduce friction
Tendon sheath
At the elbow, this rounded humeral structure articulates with the head of the radius
Capitulum