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Anatomy Muscles

Muscle Quiz

Cardiac Found in heart, striated, 1 nucleus, involuntary
Smooth Found in viscera, not striated, 1 nucleus, involuntary
Skeletal Found in limbs, striated, multinucleate, voluntary
Hardest working muscle Eye
How many muscles to frown 42
How many muscles to smile 17
How much weight do your muscles take up 50%
Largest muscle gluteus maximus
4 functions of your muscles Heat, movement, stabilize joints, maintain posture
Tissue able to contract muscle
Controlled by CNS Skeletal
Regulated by CNS Cardiac
Controlled by ANS Smooth
Word for flesh sarco
Muscle prefixes myo, mys
Tendon Attaches muscle to bone
Ligament Attaches bone to bone
Collogen fibers make up
Viscera walls line internal organs
Microfibril a very fine fibril, or fiber-like strand, consisting of glycoproteins and cellulose
Twitch single brief contraction, not a normal muscle function
Tetanus one contraction immediately followed by another. Muscle never completely returns to a relaxed state.
How many muscles in body 650
Abduction moving away from middle
Adduction moving towards middle
Circumduction rotate
Flexion When angle of joints gets smaller
Extension Angle of joints gets larger
Hyperextension Goes beyond normal point, beyond straight
Inversion Turn sole of foot medially
Eversion Turn sole of foot laterally
Pronation Palm down
Supination Palm up
Opposition Thumb touch
Plantar flexion point foot down
Dorsal Point foot to shin
Raw energy that muscles use ATP
Origin Attachment to an immovable bone
Insertion Attachment to a movable bone
Isometric Tension in muscles increase, no movement occurs (pushing one hand against the other)
Isotonic Muscles shorten and movement occurs, most normal exercise
Where does cellular respiration occur Mitochondria
Broken into ATPs Glucose
What causes muscle fatigue Not enough oxygen
Created by: jae.moore124



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