Skeletal system Flashcards
musculoskeletal system
consists of the skeletal system (bones and joints) and the skeletal muscle system (voluntary or striated muscle). Working together, these two systems protect the internal organs, maintain posture, produce blood cells, store minerals and enable the body to move.
skeletal system
consists of the bones and joints
skeletal muscle
system voluntary or striated muscle
bone marrow
a substance inside bones in which blood cells are made
cartilage
a waxy, whitish, flexible substance that lines or connects bone joints or, in some animals such as sharks, replaces bone as the supporting skeletal tissue. The ears and tips of noses of people are shaped by cartilage.
calcium
an element occurring in limestone, chalk, also present in vertebrates and other animals as a component of bone, shell etc. It is necessary for nerve conduction, heartbeat, muscle contraction and many other physiological functions.
ossification
hardening of bones
brittle
breaks easily into many pieces
joint
region where two bones meet
ligaments
band of tough tissue that connects the ends of bones or keeps an organ in place
pivot joint
joint that allows a twisting movement
hinge joints
joints in which two bones are connected so that movement occurs in one plane only
ball and socket joints
joints where the rounded end of one bone fits into the hollow end of another
immovable joints
joints that allow no movement except when absorbing a hard blow
muscles
tissue consisting of cells that can shorten
