attachment point (usually a bone) which DOES NOT change position when the muscle contracts

attachment point (usually a bone) which DOES change position when the muscle contracts

movement of a body part produced by the contraction of a muscle

movement that reduces the angle between two articulated bones

movement that increases of the angle between two articulated bones

extension past anatomical position

movement toward the midline of the bod

movement away from the midline of the body

movement in an anterior direction within the horizontal plane

movement in a posterior direction within the horizontal plane

movement in a superior or upward direction

movement in an inferior or downward direction

motion of the distal end of a bone that describes a circle but the shaft of the bone does not rotate

rotation of the forearm that turns the palm down or posteriorly.

rotation of the forearm that turns the palm up or anteriorly

movement that turns the foot inward.

movement that turns the foot outward

movement that bends the vertebral column toward the side

movement of the foot so that the toes are depressed with respect to the ankle

movement of the foot so that the toes are elevated with respect to the ankle

movement of the thumb toward the palm or other finger (a grasping motion)

prime mover” – a muscle chiefly responsible for producing a particular movement

– a muscle that opposes the movement of agonist.

Biceps brachii flexes elbow, triceps brachii extends elbow

Zygomaticus elevates the corners of mouth, depressor anguli oris depresses the corners of mouth

Teres major rotates humerus medially, teres minor rotates humerus laterally

Flexor carpi radialis abducts wrist, flexor carpi ulnaris adducts wrist

– a muscle that assists an agonist in performing a primary action.

Biceps brachii, brachialis and brachioradialis flex elbow

Triceps brachii and anconeus extend elbow

Teres major and subscapularis medially rotate humerus

Teres minor and infraspinatus laterally rotate humerus

what is the insertion os masseter

lateral surface of mandibular ramus

what is the action of masseter

elevates the mandible and closes the jaws

what is the orgin of sternocleidomastoid

two bellies: clavicular head attaches to sternal end of clavicle: sternal head attaches to manubrium

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definitions

Question	Answer
origin	attachment point (usually a bone) which DOES NOT change position when the muscle contracts
insertion	attachment point (usually a bone) which DOES change position when the muscle contracts
action	movement of a body part produced by the contraction of a muscle
flexion	movement that reduces the angle between two articulated bones
extension	movement that increases of the angle between two articulated bones
hyperextension	extension past anatomical position
adduction	movement toward the midline of the bod
abduction	movement away from the midline of the body
protraction	movement in an anterior direction within the horizontal plane
retraction	movement in a posterior direction within the horizontal plane
elevation	movement in a superior or upward direction
depression	movement in an inferior or downward direction
circumduction	motion of the distal end of a bone that describes a circle but the shaft of the bone does not rotate
rotation	pivoting on an axis
pronation	rotation of the forearm that turns the palm down or posteriorly.
supination	rotation of the forearm that turns the palm up or anteriorly
inversion	movement that turns the foot inward.
eversion	movement that turns the foot outward
lateral flexion	movement that bends the vertebral column toward the side
plantar flexion	movement of the foot so that the toes are depressed with respect to the ankle
dorsiflexion	movement of the foot so that the toes are elevated with respect to the ankle
opposition	movement of the thumb toward the palm or other finger (a grasping motion)
agonist	prime mover” – a muscle chiefly responsible for producing a particular movement
agonist examples	Biceps brachii flexes elbow
agonist examples	Triceps brachii extends elbow
antagonist	– a muscle that opposes the movement of agonist.
antagonist examples	Biceps brachii flexes elbow, triceps brachii extends elbow
antagonist examples	Zygomaticus elevates the corners of mouth, depressor anguli oris depresses the corners of mouth
antagonist examples	Teres major rotates humerus medially, teres minor rotates humerus laterally
antagonist examples	Flexor carpi radialis abducts wrist, flexor carpi ulnaris adducts wrist
Synergist	– a muscle that assists an agonist in performing a primary action.
Synergist examples	Biceps brachii, brachialis and brachioradialis flex elbow
Synergist examples	Triceps brachii and anconeus extend elbow
Synergist examples	Teres major and subscapularis medially rotate humerus
Synergist examples	Teres minor and infraspinatus laterally rotate humerus
what is the origin of masseter	zygomatic arch
what is the insertion os masseter	lateral surface of mandibular ramus
what is the action of masseter	elevates the mandible and closes the jaws
what is the orgin of sternocleidomastoid	two bellies: clavicular head attaches to sternal end of clavicle: sternal head attaches to manubrium
what is the insertion of sternocleidomastoid

Created by: user-1972232

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