Skeletal system Flashcards
(25 cards)
Muscles work antagonistically to operate the joint
Flexor and exterior
Types of joints
Ball and socket Pivot Ellipsiod Saddle Plane
What attaches muscle to bone
Tendons
Attach bone to bone
Ligament
Fluid filled body cavities that can be squeezed my muscles
Hydrostatic
Hardened outer surfaces to which internal muscles are attached
Exoskeletons
Internal systems consisting of bone and cartilage to which muscles
Endoskeletons
__ and __ make up the internal skeleton of a human being
Cartilage and bone
Fibula, tibia, femur, ulna, radius, humerus
Flat bone
Skull, ribs, sternum
Flat bones
Vertebrae , hip bones
Irregular
Regulate blood calcium level
Parathyroid
It acts to reduce blood calcium, opposing the effects of parathyroid hormone.
Calcitonin
It can also prevent weak or brittle bones
Calcium
bone remodeling, which is an ongoing process in which bone tissue is alternately resorbed and rebuilt over time. PTH is secreted in response to low blood serum calcium levels
PTH
Shallow, basin like depression, served as articulate surface
Fossa
Round or oval opening through a bone
Forearm
Haversian system of rings around central canal nerves and blood vessels run through canal
Lucune
Forerunner of long bones in the embryo
Hyaline cartilage
Bone matrix altered from stress of gravity
Remodeling
Broken bone is exposed to outside
Compound fracture
Common in children where bones have more collagen in their matrix and are more flexible than in adults
Greenstick
Common in osteoporotic bones
Compression
Clean break, but doesn’t break the skin
Simple
