Chapter 6 Davis Flashcards
Name the tissues that make up the skeletal system.
The skeletal system is made of bone tissue (the bones), cartilage (at joints), and fibrous connective tissue (the ligaments and the periosteum).
Do you remember the formal name for
bone cells?
The formal name for bone cells is osteocytes.
Functions of the Skeleton:
- Provides a framework
- Protects
- Contains red bone marrow
- Stores calcium
Name some Long bones in each of these categories.
femur, humerus, finger and toe bones
Name some short bones in each of these categories.
wrist and ankle bones
Name some Flat bones in each of these categories.
hip bones, ribs, cranial bones
Name some Irregular bones in each of these categories.
facial bones, vertebrae
ossification of the fetal skeleton begins in the third month of gestation
Embryonic Growth of Bone
first made of fibrous connective tissue; replacement by bone matrix radiates from a center of ossification in each bone.
Cranial and facial bones
All other bones are
first made of cartilage.
first center of ossification is in the diaphysis; later centers in the epiphyses.
Long bones
the site of growth after birth
Epiphyseal disc
206 bones connected by ligaments
The Skeleton
the skull, vertebrae, and rib cage
Axial skeleton
the bones of the arms and legs and the shoulder and pelvic girdles
Appendicular skeleton
Name the auditory bones.
The three auditory bones are the malleus, incus, and stapes (also called the hammer, anvil, and stirrup).
discs of fibrous cartilage separate the bodies of adjacent vertebrae
Vertebral Column
the sternum and 12 pairs of ribs (Costal cartilage is rib cartilage.)
Rib Cage
Name the parts of the skeletal system described.
Osteoclasts
Reabsorb bone matrix
Produce bone matrix
osteoblasts
The most movable type of joint
ball and socket
Bone that contains the ear receptors
temporal
Permit compression of infant skull at birth
fontanels
The frontal bone-sphenoid joint
suture
Connect bone to bone
ligaments
Produces fluid in diarthroses
synovial membrane
Bone Tissue:
are found in the matrix of calcium phosphate, calcium carbonate, and collagen.
Osteocytes (cells)
Bone Tissue:
haversian systems are present.
Compact bone
Bone Tissue:
no haversian systems; red bone marrow present.
Spongy bone
Bone Tissue:
smooth, on joint surfaces.
Articular cartilage
Bone Tissue:
fibrous connective tissue membrane; anchors tendons and ligaments; has blood vessels that enter the bone.
Periosteum