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human biology and health
chapter 2
24
Biology
8th Grade
11/05/2007

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Term
ligament
Definition
strong connective tissue that holds together the bones in a movable joint
Term
involuntary muscle
Definition
a muscle that is not conscious control
Term
follicle
Definition
structure in the dermis of the skin from which a strand of hair grows
Term
cartilage
Definition
a connective tissue that is more flexible than bone and that gives support to some parts of the body
Term
melanin
Definition
a pigment that gives the skin its color
Term
x-ray
Definition
a form of energy that travels in waves that can pass through some living tissue, but not through bones
Term
sprain
Definition
an injury in which the ligaments holding bones together are stretched too far and tear
Term
vertebrae
Definition
the 26 small bones that make up the backbone
Term
acne
Definition
a bacterial infection of the skin in which the oil glands become blocked and swollen
Term
cancer
Definition
a disease in which some body cells divide uncontrollably
Term
epidermis
Definition
the outermost layer of the skin
Term
dislocation
Definition
an injury in which a bone comes out of its joint
Term
marrow
Definition
the soft tissue that fills the internal spaces in bone
Term
skeletal muscle
Definition
a muscle that is attached to the bones of the skeleton
Term
pore
Definition
an opening through which sweat reaches the surface of the skin
Term
dermis
Definition
the lower layer of skin
Term
voluntary muscle
Definition
a muscle that is under conscious control
Term
cardiac muscle
Definition
muscle tissue found only in the heart
Term
magnetic resounance imaging (MRI)
Definition
a method for taking clear images of both the bones and soft tissues of the body
Term
joint
Definition
a place where two bones come together
Term
smooth muscle
Definition
involuntary muscle found inside many internal organs of the body
Term
tendon
Definition
strong connective tissue that attaches a muscle to a bone
Term
fracture
Definition
a break in a bone
Term
osteoporosis
Definition
a condition in which the body's bones become weak and break easily
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