Chapter 32 - Orthopedic injuries Flashcards
What are the three types muscles?
Skeletal, smooth, cardiac
What are skeletal muscles?
Also called striated muscle because of its characteristic stripes, attaches to the bones and usually crossed at least one joint. This type of muscle is also called voluntary muscle because it is under direct voluntary control of the brain, responding to commands to move specific body parts. Makes up the largest portion of the body’s muscle mass. Primary functions are movement and posture.
Cardiac muscle
Contributes to the cardiovascular system
Smooth muscle
Is a component of other body systems, including the digestive system and the cardiovascular system.
Any break in a bone in which the overlying skin is not broken
closed fracture
A grating or grinding sensation or sound caused by fractured bone ends or joints rubbing together.
crepitus
A fracture in which bone fragments are separated from one another, producing deformity in the limb.
displaced fracture
A simple crack in the bone that has not caused the bone to move from its normal anatomic position; also called a hairline fracture.
nondisplaced fracture
A simple joint where the bony projections of the scapula and the clavicle meet at the top of the shoulder.
acromioclavicular (AC) joint
The major nerve to the lower extremities; controls much of muscle function in the leg and sensation in most of the leg and foot.
sciatic nerve
Movement that occurs in a bone at a point where there is no joint, indicating a fracture; also called free movement.
false motion
A break in the continuity of a bone.
fracture
The bleeding control method used when a wound continues to bleed despite the use of direct pressure; useful if a patient is bleeding severely from a partial or complete amputation.
tourniquet
Longitudinal force applied to a structure.
traction
Stretching or tearing of a muscle; also called a muscle pull.
strain