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Anatomy/Physiology
MUSCLES - Key Terms, Abbreviations Pt 2
| Question | Answer |
|---|---|
| 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
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