Anatomy Questions and Graded Answers, 100% Guarantee
function of muscles - produce movement, maintain posture, stabilize joints, generate heat
Flexion - bending at the joint so that the angle between the bones is decreased
extension - straightening at the joint so that the angle between the bones is increased
rotation - the movement in which a bone or a whole limb, pivots or revolves around a
single long axis
Abduction - Movement away from the midline of the body
Adduction - Movement toward the midline of the body
Circumduction - movement of a limb or extremity so that the distal end describes a circle
while the proximal end remains fixed
Dorsiflexion - Backward flexion, as in bending backward either a hand or foot
plantar flexion - bending of the sole of the foot by curling the toes toward the ground
Inversion - involves the movement of the sole towards the median plane - so that the sole
faces in a medial direction
Eversion - involves the movement of the sole away from the median plane - so that the
sole faces in a lateral direction
, Supination - rotation of the forearm and hand so that the palm faces forward or upward
Pronation - rotation of the hand and forearm so that the palm faces backwards or
downwards
prime mover(agonist) - muscle with the major responsibility for a certain movement
Antagonist - muscle that opposes or reverses a prime mover(agonist)
Synergist - muscle that aids a prime mover in a movement and helps prevent rotation
Fixator - stabilizes the origin of a prime mover
naming skeletal muscles - - direction of muscle fibers (rectus(straight)
- relative size of the muscle (maximus(largest)
- location of the muscle (named from bones(temporalis)
naming skeletal muscles - - number of origins (triceps(three heads)
- location of the muscle's origin and insertion (sterno(on the sternum)
- shape of the muscle (deltoid(triangular)
- action of the muscle (flexor and extensor)
Muscle types - skeletal, cardiac, smooth
myo, mys - refers to muscle
sarco - refers to flesh
function of muscles - produce movement, maintain posture, stabilize joints, generate heat
Flexion - bending at the joint so that the angle between the bones is decreased
extension - straightening at the joint so that the angle between the bones is increased
rotation - the movement in which a bone or a whole limb, pivots or revolves around a
single long axis
Abduction - Movement away from the midline of the body
Adduction - Movement toward the midline of the body
Circumduction - movement of a limb or extremity so that the distal end describes a circle
while the proximal end remains fixed
Dorsiflexion - Backward flexion, as in bending backward either a hand or foot
plantar flexion - bending of the sole of the foot by curling the toes toward the ground
Inversion - involves the movement of the sole towards the median plane - so that the sole
faces in a medial direction
Eversion - involves the movement of the sole away from the median plane - so that the
sole faces in a lateral direction
, Supination - rotation of the forearm and hand so that the palm faces forward or upward
Pronation - rotation of the hand and forearm so that the palm faces backwards or
downwards
prime mover(agonist) - muscle with the major responsibility for a certain movement
Antagonist - muscle that opposes or reverses a prime mover(agonist)
Synergist - muscle that aids a prime mover in a movement and helps prevent rotation
Fixator - stabilizes the origin of a prime mover
naming skeletal muscles - - direction of muscle fibers (rectus(straight)
- relative size of the muscle (maximus(largest)
- location of the muscle (named from bones(temporalis)
naming skeletal muscles - - number of origins (triceps(three heads)
- location of the muscle's origin and insertion (sterno(on the sternum)
- shape of the muscle (deltoid(triangular)
- action of the muscle (flexor and extensor)
Muscle types - skeletal, cardiac, smooth
myo, mys - refers to muscle
sarco - refers to flesh
