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Anatomy/Physiology

MUSCLES - Key Terms, Abbreviations Pt 2

QuestionAnswer
AGONIST - PRIME MOVER CHIEFLY RESPONSIBLE FOR PRODUCING A PARTICULAR MOVEMMENT EX. BICEPS BRACHII IS AN AGONIST THAT BENDS THE ELBOW WHEN DOING 'CURLS'
SYNERGIST SYN - TOGETHER; ERGON - WORK CONTRACTS. PROVIDES ADDITIONAL PULL NEAR INSERTION OR MAY STABILIZE THE ELBOW JOINT.
FIXATORS AARE SYNERGISTS THAT ASSIST AN AGONIST BY PREVENTING MOVEMENT AT ANOTHER JOINT
ANTAGONIST A MUSCLE WHOSE ACTIN OPPOSES THAT OF A PARTICULAR AGONIST EX. TRICEPS BRACHII MUSCLE IS AN AGONIST THAT EXTENDS THE ELBOW
ACTION WHEN A MUSCLE CONTRACTS
INSERTION POINT OR SITE WHERE THE MOVABLE END ATTACHES TO ANOTHER STRUCTURE
ORIGIN THE PLACE WHERE THE FIXED END ATTACHES
INTERMUSCULAR SEPTA WHERE MUSCLES ORIGINATE AT A CONNECIVE TISSUE SHEATH OR BAND (COMPONENTS OF DEEP FASCIA THAT MAY SEPARATE ADJACENT SKELETAL MUSCLES)
PARALLEL MUSCLE EX. BICEPS BRACHII; THE FASCICLES ARE ARALLEL TO LONG AXIS OF THE MUSCLE. MOST MUSLCES ARE PARALLELL.
APONEUROSES MUSCLES THAT ARE FLAT BANDS WITH BROAD TTACHMENTS AT EACH END.
CONVERGENT MUSCLE EX. PECTORALIS MAJOR; FASCICLES EXTENDING OVER A BORAD AREA CONVERGE ON COMMON ATTACHMENT SITE
PENNATE MUSCLE PENNA FEATHER; FASCICLES FORM A COMMON ANGLE WITH THE TENDON. (PULL AT AN ANGLE)
CIRCULAR MUSCLE - SPHINCTER ARRANGED TO ENCIRCLE A DUCT, TUBE OR OPENING.
LEVER A RIGID STRUCTURE USED TO LIFT OR PRY SOMETHING THAT PIVOTS ON A FIXED POINT (FULCRUM)
FULCRUM FIXED POINT
AXIAL MUSCLES APPROX 60% OF SKELETAL MUSCLES IN BODY
APPENDICULAR MUSCLES APPROX 40% OF SKELETAL MUSCLES IN BODY
AXIAL MUSCLES - 4 GROUPS: HEAD & NECK MUSCLES OF VERTEBRAL COLUMN OBLIQUE & RECTUS MUSCLES OF TRUNK PELVIC OUTLET AND SUPPORTS PELVIC ORGANS
AXIAL - HEAD & NECK (NOT ASSOC. WITH VERTEBRAL COLUM) INCLUDES: FACIAL EXPRESSION, EXTRINSIC EYE MUSCLES AND MUSCLES OF TONGE, PHARYNX AND NECK.
AXIAL - VERTEBRAL COLUMN INCLUDES NUMEROUS MUSCLES IN VARIED SIZE THAT: STABILIZE, FLEX, EXEND, ROTATE THE VERTEBRAL COLUMN
AXIAL - OBLIQUE & RECTUS MUSCLES OF TRUNK BROAD SHEETS OR BANDS THAT FORM MUSCULAR WALLS OF THORACIC AND ABDOMINOPELVIC CAVITIES
AXIAL - PELVIC FLOOR MUSCLES OF PELVIC FLOOR; SPANS ELVIC OUTLET AND SUPPORTS ORGANS OF PELVIS
EPICRANIAL APONEUROSIS THE OCCIPITOFRONTALIS MUSCLE; WHICH FORMS THE SCALP HAS 2 BELLIES CONNECTED BY COLLAGENOUS SHEET CALLED THE EPICRANIAL APONEUROSIS
EYE MUSCLES: (6) INFERIOR RECTUS MEDIAL RECTUS SUPERIOR RECTUS LATERAL RECTUS INFERIOR OBLIQUE SUPERIOR OBLIQUE
INFERIOR RECTUS EYE LOOKS INFERIORILY
MEDIAL RECTUS EYE LOOKS MEDIALLY
SUPERIOR RECTUS EYE LOOKS SUPERIORLY
LATERAL RECTUS EYE LOOKS LATERALLY
INFERIOR OBLIQUE EYE ROLLS; LOOKS SUPERIORLY AND LATERALLY
SUPERIOR OBLIQUE EYE ROLLS; LOOKS INFERIORLY AND LATERALLY
MASSETER ELEVATES MANDIBLE AND CLOSES JAW
TEMPORALIS ELEVATES MANDIBLE
PTERYGOIDS MEDIAL: ELEVATES MANDIBLE AND CLOSES JAWS; SLIDES MANDIBLE FROM SIDE TO SIDE LATERAL: OPENS JAWS; PROTRUDES MANDIBLE; SLIDES MANDIBLE SIDE TO SIDE
Created by: MCasler