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Chapter 5.
Skeletal System.
41
Anatomy
12th Grade
10/22/2008

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Term

Amphiarthrosis

Definition
A slightly movable joint.
Term
Articular Capsule
Definition
Double layered capsule composed of an outer fibrous capsule lined by synovial membrane; encloses the joint cavity of a synovial joint.
Term
Acetabulum
Definition
Cuplike cavity on lateral (side) surface of the hip bone that recieves the femur.
Term
Atlas
Definition
The 1st cervical vertebrae; articulates with the occipital bone of the skull and the second cervical vertebrae (axis).
Term
Fontanels
Definition
Fibrous membranes of the cranial bones that help brain growth in the child.
Term
Articulation (joint)
Definition
Junction or connection of bones.
Term
Axial Skeleton
Definition
Bones of skull, vertebral column, thorax and sternum.
Term
Diarthrosis
Definition
Freely movable joint.
Term
Periosteum
Definition
Double layered connective tissue that covers and nourishes the bone.
Term
Pectoral
Definition

Pertaining to the chest.

Term
Osteon
Definition

Interconnecting canals in compact bone, also known as Haversian system.

Term
Synarthrosis
Definition
Immovable joint.
Term
Sacral
Definition
Lower part of back, just above the buttocks.
Term
Acromion
Definition
Outer projection of the spine of the scapula; highest point of the shoulder.
Term
Shoulder Girdle (Pectoral Girdle)
Definition

Composed of scapula and clavicle; attaches to the upper part of axial skeleton

Term
Lacrimal
Definition

Pertaining to tears.

Term

Metatarsal

Definition

Middle of foot; between tarus and phalanges.

Term
Osteoclasts
Definition
Large cells that resorb (break down) bone matrix.
Term
Phalanges
Definition
Bones of fingers or toes.
Term
Axis
Definition
Second cervial vertebrae.
Term
Lacunae
Definition
Small space, cavity or depression; lacunae is occupied by cells.
Term
Tendon
Definition
Dense fibrous tissue connecting muscle to bone.
Term
Intervertebral Discs
Definition
Discs of fibrocartilage between vertebrae.
Term
Epiphysis
Definition
End of long bone.
Term
Pelvic/Hip Girdle
Definition
Consists of coxal bones.
Term
Bony Thorax
Definition
Framework of thorax; includes ribs, sternum and thoracic vertebrae.
Term
Canaliculus
Definition
Small tubular passage or channel.
Term
Osteoporosis
Definition
Softening of the bone resulting in a decrease of bone formation.
Term
Suture
Definition
Immovable fibrous joint; all bones of the skull are attatched by sutures.
Term
Arthritis
Definition
Inflammation of the joints.
Term

Osteocyte

Definition
Mature bone cell.
Term
Pelvis
Definition
Composed of pelvic girdle, sacrum and coccyx.
Term
Foramen
Definition
Hole or opening in a bone or between body cavities.
Term
Appendicular Skeleton
Definition
Bones of limbs that are attatched to axial skeleton.
Term
Osteoblasts
Definition
Bone-forming cells.
Term
Vertebral Column
Definition
Forms individual vertebrae, sacrum and coccyx.
Term
Metacarpal
Definition
One of the five bones of the palm.
Term

Synovial Joint

Definition
Freely movable joint; also called diarthrosis.
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