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56 Cards in this Set
- Front
- Back
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Cause thigh extension and knee flexion
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hamstrings
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Safe quadrant for gluteal IM injection
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upper lateral
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Flexes the thigh
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Sartorius
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ligament connecting quadriceps to pelvis
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inguinal ligament
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Prefix sarco refers to?
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“flesh”
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connective tissue that wraps entire muscle
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epimysium
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connective tissue that wraps fascicle
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perimysium
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connective tissue between individual muscle fibers
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endomysium
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long organelles inside muscle cell
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myofibrils
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dark band of muscle fibre
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(A) band
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light band of muscle fibre
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(I) band
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band with only thin filaments
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I band
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band with entire length of thick filaments
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A band
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forms boundary between sarcomeres
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z disc
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zone that disappears in contraction
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H zone
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band down middle of sarcomere
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M line
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Thick filaments made of?
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myosin
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Thin filaments made of?
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actin
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one motor neuron and all the skeletal muscle cells stimulated by that neuron
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motor unit
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Association site of axon terminal of the motor neuron and muscle
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Neuromuscular junction
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Gap between nerve and muscle
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synaptic cleft
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a single, brief contraction
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twitch
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One contraction is immediately followed by another
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Summing of contractions
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Some relaxation occurs between contractions but nerve stimuli arrive at an even faster rate than during summing of contractions
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fused tetanus
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Reaction that breaks down glucose without oxygen
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Anaerobic glycolysis and lactic acid formation
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Touching tip of thumb to tip of forefinger
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opposition
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muscle with major responsibility for causing a particular movement
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prime mover
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muscles that oppose or reverse a movement
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antagonists
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help prime movers by producing same movement or reducing undesirable movements
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synergists
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specialized synergists that hold a bone still or stabilize origin of prime mover
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fixators
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closes eyes, squints, blinks, winks
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Orbicularis oculi
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closes mouth and protrudes the lips
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orbicularis oris
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raises eyebrows
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frontalis
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flattens the cheek, chews
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buccinator
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raises corners of the mouth
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zygomaticus
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closes the jaw and elevates mandible
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masseter
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synergist of the masseter, closes jaw
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temporalis
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pulls the corners of the mouth inferiorly
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platysma
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flexes the neck, rotates the head
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rectus abdominus
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adducts and flexes the humerus
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Pectoralis major
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flexes vertebral column and compresses abdominal contents (defecation, childbirth, forced breathing)
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Rectus abdominis
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compresses abdominal contents
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Transversus abdominus
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flex vertebral column; rotate trunk and bend it laterally (2 muscles)
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External and internal obliques
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elevates, depresses, adducts, and stabilizes scapula
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Trapezius
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extends and adducts the humerus
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latissimus dorsi
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arm abduction
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deltoid
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supinates forearm, flexes elbow
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biceps brachii
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elbow flexion
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brachialis
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weak muscle; elbow flexion
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brachioradialis
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elbow extension
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triceps brachii
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hip extension
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Gluteus maximus
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hip abduction, steadies pelvis when walking
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gluteus medius
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adduct the thighs
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adductor muscles
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thigh extension and knee flexion
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hamstrings
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name the hamstrings
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Biceps femoris
Semimembranosus Semitendinosus |
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extend the knee
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quadriceps
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