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Muscle Section

Terms

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Cardiac Muscle
heart
Origin Type
non-moveable
Actin
thin muscle
Ligaments
attaches bone to bone
Tendons
attaches muscles to bones
Muscles named by
size, origins, locations
Quadraceps
extends knee
Adduction
toward midline
Orbicularis Oculi
closes eyes
Supination
palms turned up
Inversin
foot turned in - ankle sprain
Isotonic Contraction
Moving
Pectoralis Major
common chest muscle
Soleus
raise up toes while seated.
Frontalis
raises eyebrow
triceps
extends elbow
Plantar flexion
toes pointed down
Abduction
away from midline
Trapezius
triangular shaped muscle of neck and back Shrub shoulders
Heat Production
hypothermia
Rhomboid
pulls should blades together
Mechanics of Muscle
Origin and insertion
Calf
Gastrocnemius
flexion
decreases angle
Biceps
inserts on the radius
Insertion Type
moveable
Biceps
flexes muscle
Hamstring
flexes knee
Contractability Property
ability to shorten
Isometric Contraction
Not moving
Extension
increases angle
Pronation
palms turned down
Intercostals
between the ribs
Sarcomere
basic unit of contracting muscle tissue
Actimyosin
overlap muscle contracts
Latissimus dorsi
broad back muscle
Origin
end of the muscle attaches to the stationery bone
Dorsiflexion
toes pointed up
Muscle Function
Movement, posture, heat production, walk/talk/digest/lung/blood
Muscle Fibers
controlled by nerves
circumduction
in a circle (head and neck)
Nerve meets muscle fiber
neuromuscular junction
Posture
muscle tone
Myofibrils
small tiny fibers of muscle
Deltoid
over shoulder
Nerve
motor neuron
Gluteus Maximus
extends thigh
Elasticity Property
ability to go back to original shape
Tibialis
shin splints
Smooth Muscle
organs
Insertion
end of the muscle attaches to the moving bone
Extensors
extend wrist
muscles around wrist
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Skeltal Muscle
voluntary muscle
Myosin
thick muscle
Masseter
closes jaw
Eversion
foot turned out
flexors
flex wrist
Orbicularis Oris
puckers lips
Excitability Property
ability to respond to stimuli

Deck Info

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