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Skeletal Terms

Terminology of the skeleton

acetabulum rounded depression, or socket, in the pelvis, which joins the femur (thigh bone) forming the hip joint
acromion outward extension of the shoulder blade forming the point of the shoulder. it overlies the shoulder joint and articulates with the clavicle
articular cartilage thin layer of cartilage surrounding the bone in the joint space
bone dense, hard connective tissue composing the skeleton
calcium one of the mineral constituents of bone. calcium phosphate is the major calcium salt in the bone
cancellous bone spongy, porous, bone tissue in the inner part of a bone
cartilaginous tissue flexibla, rubbery connevtive tissue. it is found in the immature skeleton, at the epiphyseal growth plate, and on joint surfaces
collagen dense, connective tissue protein strands found in bone and other tissue
compact bone hard, dense bone tissue, usually found around the outer portion of bones
condyle knuckle-like process at the end of a bone near the joint
cranial bones skull bones: ethmoid, frontal, occipital, parietal, sphenoid, and temporal
diaphysis shaft, or mid-portion, of a long bone
disk (disc) flat, round, plate0like structure
epiphyseal plate cartilaginous area at the ends of long bones where lengthwise growth takes place in the immature skeleton
epiphysis each end of a long bone; the area beyond the epiphysial plate
facial bones bones of the face: lacrimal, mandibular, maxillary, nasal, vomer, and zygomatic
fissure narrow, slit-like oppening in or between bones
fontanelle soft spot (incomplete bone formation) between the skull bones of an infant
foramen opening or passage in bones where blood vessels and nerves enter and leave. the foramen megnum is the opening of the occipital bone through which the spinal cord passes
fossa shallow cavity in a bone
haversian canals minute spaces filled with blood vessels; found in compact bone
malleolus round process on both sides of the ankle joint
manubrium upper portion of the sternum; articulates with the medial aspect of the clavicle
mastoid process round projection on the temporal bone behind the ear
medullary cavity central, hollowed-out area in the shaft of a long bone
mataphysis flared portion of a long bone, between the diaphysis (shaft) and the epiphyseal plate
olecranon large process on the proximal end of the ulna; the point of flexed elbow
osseous tissue bone tissue
ossification process of bone formation
osteoblast bone cell that helps form bony tissue
osteoclast dbone cell that absorbs and removes unwanted bony tisue
periosteum membrane surrounding bones; rich in blood vessels and nerve tissue
phosphorus mineral substance found in bones in combination with calcium
pubic symphysis area of confluence (coming together) of the two pubic bones in the pelvis. they are joined by a fibrocartilaginous disk
red bone marrow found in cancellous bone; site of hematopoiesis
ribs twelve pairs of curved bones that form the chest wall
sella turcica depression in the sphenoid bone where the pituitary gland is located
sinus hollow air cavity within a bone
styloid process pole-like process extending downward from the temporal bone on each side of the skull
suture joint between bones, such as the skull
temporomandibular joint connection on either side of the head between the temporal bone of the skull and the mandibular bone of the jaw
trabeculae supporting bundles of bony fibers in cancellous bone
trochanter large process at the neck of the femur; attachment site for muscles and tendons
vertabra individual backbone composed of the vertabral body, vertabral arch, spinous process, tranverse process, lamina, and neural canal
xiphoid process lower, narrow portion of the sternum
yellow bone marrow fatty tissue found in the medullary cavity of most adult long bones
ewing sarcoma maliognant bone tumor
exostosis bony growth arising from the surface of bone
fracture traumatic breaking of a bone
osteogenic sarcoma malignant tumor arising from bone
osteomalacia softening of bone, with inadaquate amounts of calcium in the bone
osteomyelitis inflammation of the bone and bone marrow secondary to infection
osteoporosis decrease in bone density; thinning and weakening of bone
talipes congenital abnormality of the hindfoot (involving the talus)
Created by: vikingmedterm