Research laboratory organization of muscle groups


Gross Body structure of the Muscular System

Laszlo Vass, Impotence. D Version 42-0012-00-01

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Observations Exercise 1: Muscles of the Neck and head

Data Table 1: Movement(s) performed by simply each muscle mass for Figures 3-4. MuscleMovement(s) PerformedExample: DeltoidExample: Abducts the armFrontalisRaises eyebrowsLevator ScapulaeTilts again headMasseterElevates mandibleObicularis orisLip movementsOccipitalisFacial movementsOrbicularis oculiCloses eyelidsPlatysmaDepresses decrease jawSplenius capitisHead extension/lateral flexion/and rotation with the cervicalSternocleidomastoidFlexes the neck/extends the headSupraspinatusAbduction from the arm at the joint in the shoulderTrapeziusMove towards the scapulae/support the armZygomaticusRaises the corners of the mouth when a person huge smiles

Questions Work out 1

A. List a muscle mass shown in Figures a few and four that is a prime mover/agonist for pivoting your head. Levator scapulae

B. List one particular prime mover/agonist for extendable of the mind.

Splenius capitis

C. List one muscle tissue that is the perfect mover/agonist pertaining to depression with the mandible and list a single muscle which is antagonist pertaining to depression in the mandible. Masseter

D. List one muscles that is a prime mover for smiling.


E. List one muscles that raises your eyebrow as if you were questioning what someone stated. Fronatlis

Physical exercise 2: Muscle groups of the Shoe

Data Stand 2: Movement(s) performed by simply each muscle for Statistics 5 through 7. MuscleMovement(s) PerformedDeltoidAbducts the armExternal intercostal musclesCause development of upper body cavity during inhalationExternal obliquePulls chest downwards & compress the abdominalInfraspinatisRotate the provide & strengthen the glenohumeral joint jointInternal intercostal musclesAids in elevating the ribs in inspiration- just used in forceful inhalationLatissimus dorsiExtension, adduction, slanted extension& inside rotation of shoulder

Pectoralis majorFlexion of humerus, adduction of humerus, rotates humerus medially, will keep the provide attached to the trunk with the bodyPectoralis minorDepresses the point from the shoulderRectus abdominis (under fascia)Controls tilt of pelvis & curvature of the lower Rhomboid majorHolds the scapula to the ribcage/ retract the scapula Rhomboid minorHolds the scapula on to the ribcage/ retract the scapulaSerratus anteriorPull the scapula forward around the thorax Serratus posteriorDraws the lower ribs in reverse & down to assist inrotation & expansion of the trunkSubscapularisRotates the head in the humerus mediallySupraspinatusAbduction of the arm at the glenohumeral joint joint Teres majorMedial turn & adductor of the humerus and assists the latissimus dorsi in drawing the previously elevated humerus downwards and in reverse

in reverse

TrapeziusMove the scapulae/ support the equip

Questions Exercise 2

A. List one muscle mass shown in Figures your five through six that is a primary mover/agonist pertaining to adducting the arms.

Pectoralis major

B. List one make muscle that abducts the arm.


C. Which usually muscle may be the prime valerse for glenohumeral joint flexion (upper arm going toward the ear)? Deltoid

D. List one villain for glenohumeral joint flexion.

Latissimus dorsi

E. What are muscle...



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