Week 2 Flashcards
periosteum
a tough, fibrous, connective tissue covering which is continuous with the ligaments that go across a joint. It contains the blood vessels that service the cells within a bone
epiphysis
the end of a long bone
diaphysis
the portion of the long bong between the epiphyses, the shaft of the bone
joint
the area of a long bone where the epiphyses contacts another bone
articular cartilage (hyaline)
cartilage that covers a joint
compact bone
type of bone that contains osteons consisting of concentric layers of matrix and osteocytes in lacunae
spongy bone
type of bone that has an irregular, mesh-like arrangement of thin plates of bone
red bone marrow
specialized tissue found in the spongy bone that produce all types of blood cells
osteons
unit of bone
osteocytes
bone cells
lacunae
cavity that contains the osteocyte
hyaline cartilage
firm and somewhat flexible cartilage, found in the joints, the nose, the end of ribs, and the larynx and the trachea
fibrocartilage
stronger than hyaline cartilage, withstand tension and pressure, found between the vertebrae and the knee joint
elastic cartilage
more flexible than hyaline cartilage, found in the ear and the epiglottis
ligament
connect bone to bone, made up of dense, fibrous, connective tissue
tendon
connect bone to muscles, dense fibrous connective tissue
functions of the skeleton
support the body, protect soft body parts, produce RBC, store minerals and salts, permit flexible body movement
what two categories is the skeleton classified into
axial and appendicular skeleton
axial skeleton
brain, spine, ribs
appendicular skeleton
lower body and extremities
is the hyoid bone axial or appendicular
axial
how many cervical vertebrae
7
how many thoracic vertebrae
12
how many lumbar vertebrae
5
how many fused sacrum
5
how many bones make up the tailbone (coccyx)
3-5
how many pairs of ribs do we have
12
what part of the spine do the ribs connect to
the vertebral body of the thoracic spine
how many bones make up the sternum
3
what are the three bones of the sternum
manubrium, body, xyohoid process