Bone Structure
The primary function of the skeletal system is ___.
Structural support
The hormone responsible for increasing blood calcium by stimulating osteoclast activity.
Parathyroid Hormone (PTH)
This type of joint allows no movement.
Synarthrotic joint
This movement decreases the angle between articulating bones.
Flexion.
This type of bone is longer than it is wide.
Long bone
This structure surrounds the articular surfaces of synovial joints.
Synovial membrane
These are the small canals that connect lacunae and central canals in compact bone.
Canaliculi
This type of ossification forms bone from cartilage.
Endochondral ossification
The pubic symphysis is an example of this type of joint.
Amphiarthrosis
This term describes moving a limb in a circular motion.
Circumduction
This type of bone is typically found in the wrist and ankle.
Short bones
The main function of menisci in the knee joint.
To provide cushioning and stability
This layer surrounds the outer surface of bones.
The periosteum
These centers form in the epiphyses of long bones during endochondral ossification.
Secondary ossification centers
The shoulder joint is classified as this type of joint.
Ball-and-socket joint
The movement that turns the palm upward.
Supination
The patella is an example of this type of bone.
Sesamoid bone
The fluid that lubricates synovial joints and distributes nutrients.
Synovial fluid
This type of cell is responsible for bone formation.
Osteoblasts
The type of fracture common in the distal end of the radius, often due to bracing oneself from a fall.
Colles' fracture
The intervertebral disc is classified as this type of joint.
Cartilaginous joint
The movement of the sole of the foot inward.
Inversion
The critical organs including the heart and lungs are protected by this.
Thoracic cage / Ribs and Sternum
A fluid filled sac that provides cushion between bone and other tissue types and may become inflamed and swollen as shown in lecture.
Bursa
The tube within an osteon that contains blood vessels and nerves.
Central canal or Haversian canal
Hormone that acts to decrease blood calcium levels by decreasing osteoclast activity, decreasing calcium absorption by the intestines, and increasing excretion of calcium via the kidneys.
Calcitonin
The joint between the atlas and axis allowing head rotation is known as this type.
Pivot joint
This is the term for movement of a body part away from the midline.
Abduction
This is produced within the of trabeculae in spongy bone.
RBCs, WBCs, platelets
The tissue that covers the ends of bones that form a smooth surface for a joint.
Articular cartilage