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48 Cards in this Set

  • Front
  • Back
Striated Muscle
Cardiac Muscle
Skeletal Muscle
Three Types of Muscle
Skeletal
Cardiac
Smooth
Origin
Muscles attachment to a more stationary bone.
Insertion
Muscles attachment to a more moveable bone
Tendon
Anchor Muscles firmly to bones.
Bursae
Small fluid filled sacs that lie between some tendons and the bones beneath them.
Synovial Membrane
Secretes a slippery lubricationg fluid that fills the bursa.
Tendon Sheaths
Enclose some tendons.
Muscle fibers
Specialized contractile cells.
Two kinds of skeletal muscle fibers
Thick and Thin myofilaments
Thick Myfilaments
Formed from Myosin
Thin Myofilaments
Made of Protein called actin
Sarcomere
The basice functional or contractile unit of a skeletal muscle.
Three functions of the skeletal muscle
Movement
Posture or muscle tone
Heat Production
Prime mover
Main muscle responsible for producing a pacticular movement.
Synergists
Supporting muscles that help produce a movement. (Help prime mover)
Antagonist
Muscles that relax at a joint, when prime movers and synergists contract.
ATP
Required for muscle contraction
Motor neuron
Nerve fibers that stimulate muscle cells.
Four types of skeletal muscle contractions
Twitch
Tetanic
Isotonic
Isometric
Twitch Contraction
Quick jerky response, to stimulas
Tetanic Contraction
Produced by a series of stimuli bombarding the muscle in rapid succession. More sustained and steady response than a twitch.
Isotonic Contraction
Produces muscle movement at a joint, muscle shorten.
Isometric
Does not always produce movement. increase tension within muscle but does not shorten it.
Orbicularis Oris
Kissing muscle, puckers lips
Frontal Muscle
Allows you to raise eyebrows and frown.
Masseter Muscle
Two largest muscles used for mastication. Elevates madible.
Temporal Muscle
Assists masseter in closing jaw
Sternocleidomastoid and trapezius
Make up anterior surface of neck.
Orbicularis Oculi
Closes eye.
Zygomaticus
Elevates corners of mouth and lips
Sternocleidomastoid
Rotates and flexes head and neck
Trapezius
Extends head and neck
Pectoralis Major
Flexes and helps adduct upper arm.
Latissimus Dorsi
Extends and helps adduct upper arm.
Deltoid
Abducts upper arm
Bicep Brachii
Flexes elbow.
Tricep Brachii
Extends elbow
External Oblique
Internal Oblique
Transversus Abdominis
All compress abdomen
Rectoris Abdominis
Flexes trunk
Iliopsoas
Flexes thigh or trunk
Satorius
Flexes thigh and rotates lower leg
Gluteus Maximus
Extends thigh
Adductor Longus
Gracilis
Pectineus
Adduct thigh
Semimembranosus
Semitendinosus
Bicep Femoris
Flex Knee.
Rectus Femoris
Vastus Lateralis
Intermedius Medialus
Extend knee
Tibialis Anterior
Dorsi Flexes ankle
Gastrocnemius Soleus
Peroneus Longus Brevis
Plantar flex ankle.