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Name the Muscle, A: (Action), O: (Origin), and I: (Insertion) FRONTALIS

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Name the Muscle, A: (Action), O: (Origin), and I: (Insertion) FRONTALIS FRONTALIS - A: (Action) Elevates eyebrows in glancing upward and Name the muscle, expressions of surprise or fright; draws A: (Action), O: scalp forward and wrinkles skin of (Origin), and I: forehead; O: (Origin) Galea aponeurotica; (Insertion) I: (Insertion) Subcutaneous tissue of eyebrows OCCIPITALIS - A: (Action) Retracts Name the muscle, scalp; fixes galea aponerotica so frantalis A: (Action), O: can act on eyebrows; O: (Origin) Superior (Origin), and I: nuchal line and temporal bone; I: (Insertion) (Insertion) Galea aponeurotica ORBICULARIS OCULI - A: (Action) Sphincter of eyelids; closes eye in blinking, Name the muscle, squinting, and sleep; aids in flow of tears A: (Action), O: across eye; O: (Origin) Lacrimal bone; (Origin), and I: adjacent regions of frontal bone and (Insertion) maxilla; medial angle of eyelids; I: (Insertion) Upper and lower eyelids; skin around margin of orbit ORBICULARIS ORIS - A: (Action) Name the muscle, Encircles mouth, closes lips, protrudes lips A: (Action), O: as in kissing; uniquely developed in (Origin), and I: humans for speech; O: (Origin) Modiolus (Insertion) of mouth; I: (Insertion) Submucosa and dermis of lips BUCCINATOR - A: (Action) Compresses cheek against teeth and gums; directs food between molars; retracts cheek from teeth Name the muscle, when mouth is closing to prevent biting A: (Action), O: cheek; expels air and liquid; O: (Origin) (Origin), and I: Alveolar processes on lateral surfaces of (Insertion) mandible and maxilla; I: (Insertion) Orbicularis oris; submucosa of cheek and lips PLATYSMA - A: (Action) Draws lower lip and angle of mouth downward in Name the muscle, expressions of horror or surprise; may aid A: (Action), O: in opening mouth widely; O: (Origin) (Origin), and I: Fascia of deltoid and pectoralis major; I: (Insertion) (Insertion) Mandible; skin and subcutaneous tissue of lower face Name the muscle, HYOGLOSSUS - A: (Action) Depresses A: (Action), O: tongue; O: (Origin) Body and greater horn (Origin), and I: of hyoid bone; I: (Insertion) Lateral and (Insertion) inferior surfaces of tongue TEMPORALIS - A: (Action) Elevation, Name the muscle, retraction, and lateral and medial excursion A: (Action), O: of the mandible; O: (Origin) Temporal (Origin), and I: lines and temporal fossa of cranium; I: (Insertion) (Insertion) Coronoid process and anterior border of mandibular ramus MASSETER - Elevation of mandible, with Name the muscle, smaller roles in protraction, retraction, and A: (Action), O: lateral and medial excursion; O: (Origin) (Origin), and I: Zygomatic arch; I: (Insertion) Lateral (Insertion) surface of mandibular ramus and angle MEDIL PTERYGOID - A: (Action) Elevation, protraction, and lateral and Name the muscle, medial excursion of the mandible; O: A: (Action), O: (Origin) Medial surface of lateral pterygoid (Origin), and I: plate; palatine bone; lateral surface of (Insertion) maxilla near molar teeth; I: (Insertion) Medial surface of mandibular ramus and angle LATERAL PTERYGOID - A: (Action) Depression (In wide opening of the mouth), protraction, and lateral and medial Name the muscle, excursion of the mandible; O: (Origin) A: (Action), O: Lateral surfaces of lateral pterygoid plate; (Origin), and I: greater wing of sphenoid; I: (Insertion) (Insertion) NeckSTERNOCLEIDOMASTOID of mandible (just below condyle); - A: (Action)articular Unilateral disc action and capsule tilts head of slightly upward andtemporomandibular toward the opposite joint side, as in looking over one's contralateral shoulder. The most common action is probably Name the muscle, rotating the head to the left or right. A: (Action), O: Bilateral action draws the head straight (Origin), and I: forward and down, as when eating or (Insertion) reading. Aids in deep breathing when head is fixed.; O: (Origin) Manubrium of sternum; medial one third of clavicle; I: (Insertion)TRAPEZIUS Mastoid - A: (Action)process; lateralExtends half and of laterally flexessuperior neck.; nuchal O: (Origin) line External Name the muscle, occipital protuberance; medial one-third of A: (Action), O: superior nuchal line; nuchal ligament; (Origin), and I: spinous processor of vertebrae C7-T3 or (Insertion) T4; I: (Insertion) Acromion and spine of DIAPHRAGMscapula; lateral - A: one-third (Action) of Prime clavicle mover of inspiration (responsible for about two-thirds of air intake); contracts in preparation for sneezing, coughing, crying, Name the muscle, laughing, and weight lifting; contraction A: (Action), O: compresses abdominal viscera and aids in (Origin), and I: childbirth and expulsion of urine and feces; (Insertion) O: (Origin) Xiphoid process of sternum; ribs and costal cartilages 7-12; lumbar vertebrae;EXTERNAL I: (Insertion) INTERCOSTALS Central tendon - A: of (Action) When diaphragmscalenes fix rib 1, external intercostals elevate and protract ribs 2-12, Name the muscle, expanding the thoracic cavity and creating A: (Action), O: a partial vacuum causing inflow of air; (Origin), and I: exercise a braking action during expiration (Insertion) so that expiration is not overly abrupt.; O: (Origin) Inferior margins of ribs 1-11; I: (Insertion) Superior margin of next lower rib INTERNAL INTERCOSTALS - A: (Action) In inspiration, the intercartilagous part aids in elevating the ribs and expanding the thoracic cavity; in Name the muscle, expiration, the interosseous part depresses A: (Action), O: and retracts the ribs, compressing the (Origin), and I: thoracic cavity and expelling air; the latter (Insertion) occurs only in forceful expiration, not in EXTERNALrelaxed breathing.; ABDOMINAL O: (Origin) OBLIQUE Superior - marginsA: (Action) and costalSupports cartilages abdominal of ribs viscera 2-12; againstmargin pull of sternum; of gravity; I: (Insertion) stabilizes vertebralInferior columnmargin during of heavy next lifting;higher ribmaintains posture; compresses abdominal organs, Name the muscle, thus aiding in forceful expiration of breath A: (Action), O: and in expulsion of abdominopelvic (Origin), and I: contents during childbirth, urination, (Insertion) defecation, and vomiting; unilateral contraction causes contralateral rotation of waist; O: (Origin) Ribs 5-12; I: (Insertion) AnteriorINTERNAL half ABDOMINALof iliac crest; symphysis OBLIQUE and - A: (Action)superior Same margin as external of pubis oblique Name the muscle, except that unilateral contraction causes A: (Action), O: ipsilateral rotation of waist; O: (Origin) (Origin), and I: Inguinal ligament; iliac crest; (Insertion) thoracolumbar fascia; I: (Insertion) Ribs 10-12; costal cartilages 7-10; pubis RECTUS ABDOMINIS - A: (Action) Name the muscle, Flexes lumbar region of vertebral column, A: (Action), O: producing forward bending at the waist; O: (Origin), and I: (Origin) Pubic symphysis and superior (Insertion) margin of pubis; I: (Insertion) Xiphoid process; costal cartilages 5-7 ERECTOR SPINAE - A: (Action) Extension and lateral flexion of vertebral column; the longissimus capitis also Name the muscle, produces ipsilateral rotation of the head; O: A: (Action), O: (Origin) Nuchal ligament; ribs 3-12; (Origin), and I: thoracic and lumbar vertebrae; median and (Insertion) lateral sacral crests; thoracolumbar fascia; I: (Insertion) Mastoid process; cervical and thoracic vertebrae; all ribs ERECTOR SPINAE: ILIOCOSTALIS - A: (Action) Extension and lateral flexion of vertebral column; the longissimus capitis Name the muscle, also produces ipsilateral rotation of the A: (Action), O: head; O: (Origin) Nuchal ligament; ribs (Origin), and I: 3-12; thoracic and lumbar vertebrae; (Insertion) median and lateral sacral crests; thoracolumbar fascia; I: (Insertion) Mastoid ERECTORprocess; cervical SPINAE: and thoracicLONGISSIMUS vertebrae; - allA: (Action) Extensionribs and lateral flexion of vertebral column; the longissimus capitis Name the muscle, also produces ipsilateral rotation of the A: (Action), O: head; O: (Origin) Nuchal ligament; ribs (Origin), and I: 3-12; thoracic and lumbar vertebrae; (Insertion) median and lateral sacral crests; thoracolumbar fascia; I: (Insertion) Mastoid process;ERECTOR cervical SPINAE: and thoracic SPINALIS vertebrae; - A: all (Action) Extensionribs and lateral flexion of vertebral column; the longissimus capitis Name the muscle, also produces ipsilateral rotation of the A: (Action), O: head; O: (Origin) Nuchal ligament; ribs (Origin), and I: 3-12; thoracic and lumbar vertebrae; (Insertion) median and lateral sacral crests; thoracolumbar fascia; I: (Insertion) Mastoid process; cervical and thoracic vertebrae; all QUADRATUS ribsLUMBORUM - A: (Action) Aids respiration by fixing rib 12 and stabilizing inferior attachments of Name the muscle, diaphragm. Unilateral contraction causes A: (Action), O: ipsilateral flexion of lumbar vertebral (Origin), and I: column; bilateral contraction extends (Insertion) lumbar vertebral column.; O: (Origin) Iliac crest; iliolumbarligament; I: (Insertion) Rib 12, vertebrae L1-L4 EXTERNAL URETHRAL SPHINCTER - Name the muscle, A: (Action) Retains urine in bladder until A: (Action), O: voluntarily voided; O: (Origin) Ischiopubic (Origin), and I: rami; I: (Insertion) Encircles urethral (Insertion) orifice COMPRESSOR URETHRAE - A: Name the muscle, (Action) Aids in urine retention; found in A: (Action), O: females only; O: (Origin) Ischiopubic rami; (Origin), and I: I: (Insertion) Right and left compressor (Insertion) urethrae meet as muscular sheet inferior to external urethral sphincter EXTERNAL ANAL SPHINCTER - A: Name the muscle, (Action) Retains feces in rectum until A: (Action), O: voluntarily
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