Ch. 3 Skeletal System Flashcards
(120 cards)
Ossification
The formation and repair of bone
Periosteum
Peri - surrounding
Oste -bone
Um - pertaining to
The tough, fibrous tissue that forms outermost covering of the bone
Compact bone/ cortical bone
Dense, hard, and very strong bone that forms the protective outer layer
75% of bone matter
Spongy bone/ cancellous bone
Porous, spongy, lighter, weaker
Usually in long bones
Containing red bone marrow
Medullary cavity
CENTRAL cavity within compact bone in long bones
Where red and yellow bone marrow is stored
Endosteum
End - within
Oste - bone
Um - noun ending
Tissue that lines medullary cavity
Red bone marrow
Hemopoietic tissue that makes red and white blood cells, hemoglobin, and thrombocytes
Hemopoietic or hematopoietic
Hem/o - blood
Poietic - pertaining to formation
Pertaining to the formation of blood cells
Yellow bone marrow
Fat, as fat storage, that replaces half red bone marrow from adolescence
Cartilage
Shock absorber between bones
Smooth, rubbery, blue-white connective tissue
Articular cartilage
Covers surface of bones where they come together or “articulate” to prevent rubbing against eachother and make for smooth movement
Menicus
Curved, fibrous cartilage in some joints such as the knee and jaw
Diaphysis
Shaft of a long bone
Epiphyses
Wider end of long bones covered by articular cartilage
Proximal is nearest to midline and distal is farthest
Foramen (pl foramina)
Opening in bone which blood vessels, nerves, etc pass through
Process
A normal projection on the surface of a bone that most commonly serves as an attachment for a muscle tendon
(Ex. Mastoid process is bony projection located on temporal bones behind ear)
Fibrous joints
Inflexible layers of dense connective tissue which hold the bones tightly together
In adults these “sutures” do not allow any movement
Fontanelles
“Soft joints” in skull of newborns that allows for passage through birth canal and for growth
Cartilaginous joints
Bones connected entirely by cartilage and allow very slight movement
Ex pubic symphysis - allow a lil movement for childbirth
Synovial joint
Joints where bones allow a variety of motion
Bursa
Fibrous sac which cushions friction prone areas
Axial skeleton
Protects organs of nervous, respiratory, and circulatory system
Appendicular skeleton
Make body movement possible and protect digestion, excretion, and reproductive systems
Auditory ossicles
3 tiny bones in the middle ear, malleus, incus, stapes