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38 terms

Science 7 Tissues & Bones

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epithelial tissue
tissue that lines and protects internal organs; has a basement membrane; can absorb or secrete
muscular tissue
uses protein filaments of actin and myosin; contains sarcomeres; can be voluntary or involuntary; has cells that are spindle or branched
nervous tissue
a body tissue that carries electrical messages back and forth between the brain and every other part of the body; contains axons, dendrites, and cell bodies
connective tissue
a body tissue that provides support for the body and connects all of its parts; can be solid, semi-solid, or liquid; the most versatile tissue; includes ligaments
sarcomere
in skeletal muscle, the functional unit that contracts and is composed of myofibrils
actin/myosin
causes muscles to contract and relax; proteins
tendon
strong connective tissue that attaches muscle to bone
ligament
a flexible band of fibrous tissue that connects bone to bone
axial skeleton
forms the main trunk of the body and is composed of the skull, spinal column, ribs, and breastbone
appendicular skeleton
arm bones, pelvic girdle, and leg bones, feet and hands
periosteum
tough layer of connective tissue surrounding a bone
compact bone
Hard, dense bone tissue that is beneath the outer membrane of a bone
spongy bone
Layer of bone tissue having many small spaces and found just inside the layer of compact bone.
hematopoiesis
the formation of blood cells in the bone marrow
red marrow
in the spongy bone; makes red blood cells
yellow marrow
soft, fatty material found in the long bones
medullary canal
hollow region in bone shaft which acts as a storage area for bone marrow
articular cartilage
covers the surfaces of bones where they come together to form joints
osteon
unit of compact bone; made up of concentric circles called Haversian canals
hinge joint
at the elbow, knee, ankle, and fingers, allows a joint to bend and straighten promoting rotation
pivot joint
one bone rotates in a ring of another bone that does not move; head and neck
synovial fluid
lubricating substance found in joints
saddle joint
found at the base of thumb allowing thumb rotation and the ability to grasp objects
ball and socket joint
allows you to swing limb freely in a circle; found in shoulders and hips
hyaline cartilage
Most common type of cartilage; it is found on the ends of long bones, ribs, and nose
fused joint
allows for no movement at all
in skull
complete fracture
a break that extends through the entire thickness of the bone
green stick fracture
A partial bone fracture, usually occurring in children, in which the bone is bent but only broken on one side.
comminuted fracture
bone is splintered or crushed into several pieces
osteoporosis
a condition in which the body's bones become weak and break easily
osteoarthritis
a disease of the joints in which cartilage breaks down;associated with aging
skeletal system
the main system for body support; the bones of your body
endocrine system
regulates hormones in the body that regulate processes such as growth, reproduction, and nutrient use (metabolism)
nervous system
consists of brain, spinal cord, and nerves and regulates the body's responses to internal and external stimuli
digestive system
the mouth, stomach, intestines, and salivary glands that change food into nutrients and wastes; converts chemical energy into useable energy
excretory system
group of organs including the kidneys, liver, skin, large intestine and lungs that purify the body by the elimination of waste matter; cleans the bloodstream
functions of skeletal system
support, protection, production, storage
Number of bones in body
206