The Muscular System Flashcards
-asthenia
weakness; lack of strength
bi-
twice, double, two
brady-
slow
-cele
hernia, tumor, swelling
clono/o
violent action
fasci/o
fascia; fibrous band
fibr/o
fiber
hemi-
half
kines/o; kinesi/o
movement
-lysis
destruction
-paresis
partial or incomplete paralysis
-plegia
paralysis, stroke
-penia
deficiency
tax/o
coordination, order
ten/o; tend/o; tendin/o
tendon, stretch out, extend, strain
ton/o
tone, tension, stretching
tri-
three
ROM
range of motion
PT
physical therapist
AT
athletic trainer
OT
occupational therapist
ADL
activities of daily life/living
Muscle fibers
long, slender cells that make up muscles
Fascia
sheet of fibrous connective tissue that covers, supports, and separates muscles or groups of muscles
Tendon
Narrow band of nonelastic, dense, fibrous connective tissue which attaches a muscle to a bone
Skeletal Muscle
attaches to the bones and makes body motions possible, voluntary movement, striated appearance, polynucleated
Smooth Muscle
located in internal organs, involuntary movement, smooth and not striated
Cardial Muscle
forms the muscular walls of the heart, involuntary movement, striated, mononucleated
Muscle innervation
muscles are innervated by motor nerves. the brain sends a signal which stimulates a muscle to contract
Antagonistic muscle pairs
when one muscle of the pair contracts, the other relaxes
Abduction
movement of a limb away from the midline of the body
Adduction
movement of a limb towards the midline of the body
Flexion
decreasing the angle between two bones by bending a limb at a joint
Extension
increasing the angle between two bones or the straightening out of a limb
Hyperextension
the extreme overextension of a limb beyond its normal limit
Elevation
raising or lifting a body part
Depression
lowering a body part
Rotation
a circular movement around an axis, eg; turning at a shoulder joint
Circumduction
circular movement at the far end of a limb like at the hand
Supination
rotating the arm or leg so that the hand or sole of a foot turns upwards
Pronation
rotating the arm or leg so that the hand or sole of a foot turns downwards
Dorsiflexion
movement that bends the foot upward at the ankle (toes up)
Plantar flexion
movement that bends the foot downward at the ankle (toes down)
Oblique muscle fiber
slanted or at an angle
Rectus muscle fiber
straight, aligned with vertical axis of the body
Sphincter muscle fiber
ring-like
Transverse muscle fiber
in a crosswise alignment, left and right
Frontalis
muscle in the forehead, raises and lowers the eyebrows
Temporalis
moves the lower jaw up and back to close the mouth
Masseter
moves the lower jaw up to close the mouth specifically for chewing, one of the strongest muscles in the body
Pectoralis
makes up most of the chest muscles
External/Internal Obliques
in the abdomen
Rectus abdominis
helps flex the trunk, assists with breathing, supports the spine
Transverse abdominis
on the side of the abdomen, core muscle which engages when you laugh or cough
Deltoid
forms the cap of the shoulder
Trapezius
moves head and shoulder blade
Biceps brachii
anterior upper arm, flexes the elbow
Triceps brachii
posterior upper arm, extends the elbow
Rectus femoris
anterior thigh, extends the leg at the knee
Quadriceps femoris
made up of 4 muscles in the anterior thigh which extend the leg at the knee
Hamstring group
posterior thigh, extends the hip and flexes the foot