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Introduction to Muscles

Published byΩσαννά Βιτάλη Modified over 5 years ago

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Presentation on theme: "Introduction to Muscles"— Presentation transcript:

1 Introduction to Muscles
Origin: Attachment of a muscle tendon to the stationary bone. Insertion: Attachment of the other muscle tendon to the movable bone. Action: The movement that occurs at the joint due to muscle contraction.

2 Origin and Insertion

3 Belly

4 Characteristics Used to Name Muscles
Direction of Fibers Size of Muscle Shape of Muscle Action of Muscles Number of Origins of Muscle Location of Muscle Origin and Insertion of Muscle

5 Characteristics Used to Name Muscles
Direction of Muscle Fibers Rectus: Parallel to midline Transverse: Perpendicular to midline Oblique: Diagonal to midline

6 Rectus: Parallel to midline

7 Transverse: Perpendicular to midline

8 Oblique: Diagonal to midline

9 Characteristics Used to Name Muscles
Size of the Muscle: Maximus: Largest muscle in a group Minimus: Smallest muscle in a group Longus: Longest muscle in a group Brevis: Shortest muscle in a group Latissimus: Widest muscle in a group Magnus: Largest muscle in a group Major: Largest muscle in a group Minor: Smallest muscle in a group Vastus: Great or large muscle

10 Maximus: Largest muscle in a group

11 Minimus: Smallest muscle in a group

12 Longus: Longest muscle in a group

13 Brevis: Shortest muscle in a group

14 Latissimus: Widest muscle in a group

15 Major: Largest muscle in a group

16 Minor: Smallest muscle in a group

17 Vastus: Great or large muscle

18 Characteristics Used to Name Muscles
Shape of Muscle Deltoid: Triangular shaped Trapezius: Trapezoid shaped Serratus: Saw-toothed muscle edge Rhomboideus: Diamond shaped Orbicularis: Circular shaped Pectinate: Comblike shaped Platys: Flat muscle Quadratus: Square shaped Gracilis: slender muscle

19 Deltoid: Triangular shaped

20 Trapezius: Trapezoid shaped

21 Serratus: Saw-toothed muscle edge

22 Rhomboideus: Diamond shaped

23 Orbicularis: Circular shaped

24 Pectinate: Comblike shaped

25 Platys: Flat muscle

26 Quadratus: Square shaped

27 Gracilis: Slender muscle

28 Characteristics Used to Name Muscles
Action of Muscles Flexor: Decreases angle at joint Extensor: Increases angle at joint Abductor: Moves bone away from midline Adductor: Moves bone toward midline Levator: Produces superior movement Depressor: Produces inferior movement Supinator: Turns palm anteriorly Pronator: Turns palm posteriorly Sphincter: Decreases size of opening Tensor: Makes a body part rigid Rotator: Moves bone around an axis

29 Flexor: Decreases angle at joint

30 Extensor: Increases angle at joint

31 Adductor: Moves bone toward midline

32 Levator: Produces superior movement

33 Depressor: Produces inferior movement

34 Supinator: Turns palm anteriorly

35 Pronator: Turns palm posteriorly

36 Sphincter: Decreases size of opening

37 Tensor: Makes a body part rigid

38 Characteristics Used to Name Muscles
Number of Origins of Muscle Biceps: Muscle with two origins Triceps: Muscle with three origins Quadriceps: Muscle with four origins

39 Biceps: Muscle with two origins

40 Triceps: Muscle with three origins

41 Quadriceps: Muscle with four origins

42 Location of Muscle

43 Origin and Insertion of Muscle

44 Origin and Insertion of Muscle

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52 Extrinsic Muscles of the Eye

53 Extrinsic Muscles of the Eye

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