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skeletal system
Question | Answer |
---|---|
_________ -the ability of your body to maintain a stable, internal, environment | homeostasis |
cells are organized into groups called _________ | tissues |
there are ___ main kinds of tissues in your body | 4 |
covers and protects | epithelial tissue |
sends signals throughout the body | nervous tissue |
contracts and relaxes to produce movement | muscle tissue |
joins, supports, protects, insulates, nourishes, and cushions organs (the glue that holds your organs together) | connective |
tissues make up _______ | organs |
organs make up ______ | organ systems |
your body has ____ major organ systems | 12 |
the skeletal system is made up of what? | bones, cartilage, and the connective tissue |
connective tissue does what | holds bones together |
when a baby is born how many bones does it have? | over 300 |
an average adult has about how many bones? | 206 |
a person will not have a fused skeleton until about the age of what? | 25 |
what part of the skeleton is the skull, vertebral column, ribs, and the sternum in? | axial skeleton |
appendicular skeleton | arms, legs, shoulder, hip bones, wrists, ankles, finger, toes, ect. |
the what in your bones help make blood cells? | marrow |
minerals are deposited by living cells called? | osteoblast |
compact bone | no visible open spaces; rigid and dense |
spongy bone | many open spaces; provides most of the strength and support for a bone |
red marrow produces | red and white blood cells |
yellow marrow in the central cavity stores | fat |
______ is found when two or more bones meet | joints |
joints are held together by | ligaments |
gliding joints | allows bones to glide over one another |
ball-and-socket joint | allows you to move in all directions |
hinge joints | allows you to flex and extend |
pivot joint | allows you to turn your head |
immovable joints | bone is fused together |
______ can occur when ligaments are stretched to far | sprains |
______ is a disease that affects the joints | arthritis |