muscle kinesiology anatomy & physiology. who came up with those long names? many of the names...
TRANSCRIPT
Who came up with those
LONG names?
Many of the names come from Latin and the regional skeletal bones
How many skeletal muscles can you name?
Muscle MovementMovement produced by contraction and pulling on attached bonePoint of attachment of tendons to bones is called ORIGINS AND INSERTIONSORIGIN: attachment to stationary/immovable boneINSERTION: attachment to movable bone
1. Contraction causes insertion to be pulled to origin.
2. Long head- tendon attaches to scapula
3. Short head- attached to clavicle
Group Action: muscles working in groups to produce body movement
Prime Movers: (agonist) Muscles primarily involved in being responsible for a particular movement i.e-raising hand(deltoid)
Antagonists: Muscles that oppose or reverse the action of the PM.
Synergist: (helper) muscle that aids the PM in a particular movement.
Prime mover- biceps
Antagonist-triceps brachii
Synergists- other muscles of forearm to stabilize the elbow joint
Primary Antagonistic Actions of Muscular system (examples of)
1.Flexion/Extension: quadriceps femoris and hamstrings for hip and knee
2.Abduction/Adduction: lats and deltoid for arm
3.Elevation/Depression:various parts of traps to
shrug and release shoulders
Cont.4.Pronation/Supination: flexor and extension muscles in hand allow palm to turn in, palm turned out=thumbs up/thumbs down
5.Dorsiflexion/Plantar flexion: tibialis anterior vs tibialis posterior= foot flexion up and foot extension down.
6.Inversion/Eversion:tibialis anterior/posterior and fibularis longus= foot in and out
CHARACTERISTIC Description EXAMPLES IN HUMANS
1.Direction of fascicles relative to midline
rectus = paralleltransverse = perpendicularoblique = at 45o angle
Rectus abdominusTransversus abdominusExternal Oblique
2.Location (i.e. the bone or body part that a muscle covers)
frontal bonetibia
FrontalisTibialis Anterior
3.Relative Size maximus = largestlongus = longestbrevis = shortest
Gluteus maximusPalmaris longusfibularis brevis
Seven ways we name muscles
4.Number of Origins (Heads)
biceps = 2 originstriceps = 3 origins
Biceps brachiiTriceps brachii
5. Shape deltoid = triangletrapezius = trapezoidserratus = saw-toothedorbicularis = circular
DeltoidTrapeziusSerratus anteriorOrbicularis oris
6. Location of Origin and/or Insertion
origin = sternuminsertion = mastoid process
Sternocleidomastoid
7. Action of Muscle flexionextensionadduction
Flexor carpi radialisExtensor digitorumAdductor longus
Muscle naming cont’
Quick Quiz (2 points/bullet)1.Points of attachment of tendons to bone are called:2.Muscles that oppose the prime mover (agonist) are called what?3.Which of the 7 ways we name muscles helps explain the naming of the rectus abdominus? 4. Give an example of a muscle name based on its shape (also give the shape)?5.What two groups of muscles work to flex and extend the knee and hip?