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Characteristics Used to Name Skeletal Muscles. Naming Skeletal Muscles 1 – Location of the muscle 2 – Shape of the muscle 3 – Size of the muscle 4 – Direction/Orientation.

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Presentation on theme: "Characteristics Used to Name Skeletal Muscles. Naming Skeletal Muscles 1 – Location of the muscle 2 – Shape of the muscle 3 – Size of the muscle 4 – Direction/Orientation."— Presentation transcript:

1 Characteristics Used to Name Skeletal Muscles

2 Naming Skeletal Muscles 1 – Location of the muscle 2 – Shape of the muscle 3 – Size of the muscle 4 – Direction/Orientation of the muscle fibers/cells fibers/cells 5 – Number of Origins 6 – Location of the Attachments 7 – Action of the muscle

3 Muscles Named by Location Location: frontalis – frontal bone frontalis – frontal bone lateralis – lateral or on the side lateralis – lateral or on the side tibialis anterior – front of tibia tibialis anterior – front of tibia fibularis longus – near fibula fibularis longus – near fibula supra – above supra – above infra – below infra – below sub - underneath sub - underneath

4 Muscles Named by Shape Shape: deltoid – triangle deltoid – triangle Latissimus – wide Latissimus – wide teres - round teres - round trapezius – trapezoid trapezius – trapezoid serratus –saw-toothe serratus –saw-toothe orbicularis – circular orbicularis – circular

5 Muscles Named by Size Size: maximus – largest maximus – largest minimis – smallest minimis – smallest vastus - huge vastus - huge longus – longest longus – longest brevis – short brevis – short major – large major – large minor – small minor – small Example: Pectoralis Major

6 Muscles Named by Direction of Fibers Direction/Orientation: rectus (straight) - parallel to the muscles long axis rectus (straight) - parallel to the muscles long axis ex: rectus abdominis ex: rectus abdominis transversus (transverse) – at right angles to the muscles long axis transversus (transverse) – at right angles to the muscles long axis oblique – diagonal oblique – diagonal

7 Muscles Named for Number of Origins Number of Origins: biceps – two origins biceps – two origins ex: biceps brachii ex: biceps brachii triceps – three origins triceps – three origins ex: triceps brachii ex: triceps brachii quadriceps – four origins quadriceps – four origins

8 Muscles Named for Origin and Insertion Points Origin and Insertion: sterno = sternum cleiodo = clavicle mastoid = location on the temporal bone sternocleiodomastoid muscle

9 Muscles Named for Action Action: flexor carpi radialis – flexes wrist flexor carpi radialis – flexes wrist abductor magnus – abducts the thigh abductor magnus – abducts the thigh extensor digitorum – extends the fingers extensor digitorum – extends the fingers levator – lifts a structure levator – lifts a structure


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