SKELETAL MUSCLES. Objectives

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2 Objectives

3 Body Wall Muscles Remember the pattern

4 Hypaxial Muscle Overview Cervical body wall muscles

5 Hypaxial Muscle Overview Thoracic body wall muscles

6 Hypaxial Muscle Overview Abdominal body wall muscles

7 Hypaxial Muscle Overview Pelvic body wall muscles

8 Additional Hypaxial Muscles Subvertebral hypaxial muscles Longus capitis muscle

9 Additional Hypaxial Muscles Subvertebral hypaxial muscles Rectus capitis anterior muscle

10 Additional Hypaxial Muscles Internal lateral hypaxial muscles Intertransversarii ant. cerv. muscle

11 Additional Hypaxial Muscles Internal lateral hypaxial muscles Intertransversarii lat. ant. lumb. muscle

12 Additional Hypaxial Muscles Middle lateral hypaxial muscles Rectus capitis lateralis muscle

13 Additional Hypaxial Muscles Middle lateral hypaxial muscles Intertransversarii post. lat. cerv. muscle

14 Additional Hypaxial Muscles Middle lateral hypaxial muscles Intertransversarii post. lat. lumb. muscle

15 Additional Hypaxial Muscles Middle lateral hypaxial muscles Cremaster muscle

16 Additional Hypaxial Muscles Ventral hypaxial muscles Pyramidalis muscle

17 Epaxial Muscle Overview Superficial group muscles Splenius capitis muscle - layer 1

18 Epaxial Muscle Overview Superficial group muscles Splenius cervicis muscle - layer 1

19 Epaxial Muscle Overview Superficial group muscles Erector spinae muscles - layer 2 Iliocostalis muscle

20 Epaxial Muscle Overview Superficial group muscles Erector spinae muscles - layer 2 Longissimus muscle

21 Epaxial Muscle Overview Superficial group muscles Erector spinae muscles - layer 2 Spinalis muscle

22 Epaxial Muscle Overview Deep group muscles Semispinalis muscles - layer 3

23 Epaxial Muscle Overview Deep group muscles Multifidus muscles - layer 4

24 Additional Epaxial Muscles Deep intersegmental muscles Rotatores muscles

25 Additional Epaxial Muscles Deep intersegmental muscles Interspinales muscles

26 Additional Epaxial Muscles Deep intersegmental muscles Levatores costasum muscles

27 Additional Epaxial Muscles Deep intersegmental muscles Intertransversarii post. med. cerv. muscles

28 Additional Epaxial Muscles Deep intersegmental muscles Intertransversarii thoracis muscles

29 Additional Epaxial Muscles Deep intersegmental muscles Intertransversarii med. lumb. muscles

30 Understanding Intertransverse Muscles Cervical intertransverse muscles

31 Understanding Intertransverse Muscles Cervical intertransverse muscles Hypaxial

32 Understanding Intertransverse Muscles Cervical intertransverse muscles Epaxial

33 Understanding Intertransverse Muscles Cervical intertransverse muscles Nerve relations

34 Understanding Intertransverse Muscles Thoracic intertransverse muscles

35 Understanding Intertransverse Muscles Thoracic intertransverse muscles Hypaxial

36 Understanding Intertransverse Muscles Thoracic intertransverse muscles Epaxial

37 Understanding Intertransverse Muscles Thoracic intertransverse muscles Nerve relations

38 Understanding Intertransverse Muscles Lumbar intertransverse muscles

39 Understanding Intertransverse Muscles Lumbar intertransverse muscles Hypaxial

40 Understanding Intertransverse Muscles Lumbar intertransverse muscles Epaxial

41 Understanding Intertransverse Muscles Lumbar intertransverse muscles Nerve relations

42 Additional Epaxial Muscles Suboccipital muscles Rectus capitis posterior major muscle

43 Additional Epaxial Muscles Suboccipital muscles Rectus capitis posterior minor muscle

44 Additional Epaxial Muscles Suboccipital muscles Obliquus capitis inferior muscle

45 Additional Epaxial Muscles Suboccipital muscles Obliquus capitis superior muscle

46 Additional Epaxial Muscles Suboccipital muscles What are the suboccipital muscles?

47 Branchial Arch Skeletal Derivatives

48 Branchial Arch Skeletal Derivatives First arch Incus

49 Branchial Arch Skeletal Derivatives First arch Malleus

50 Branchial Arch Skeletal Derivatives First arch Anterior ligament of malleus

51 Branchial Arch Skeletal Derivatives First arch Anterior ligament of malleus

52 Branchial Arch Skeletal Derivatives First arch Sphenomandibular ligament

53 Branchial Arch Skeletal Derivatives First arch Sphenomandibular ligament

54 Branchial Arch Skeletal Derivatives First arch Mandibular (Meckel s) cartilage

55 Branchial Arch Skeletal Derivatives Second arch Stapes

56 Branchial Arch Skeletal Derivatives Second arch Styloid process

57 Branchial Arch Skeletal Derivatives Second arch Stylohyoid ligament

58 Branchial Arch Skeletal Derivatives Second arch Lesser cornu and cranial part of hyoid

59 Branchial Arch Skeletal Derivatives Third arch Greater cornu and inferior part of hyoid

60 Branchial Arch Skeletal Derivatives Fourth arch Laryngeal cartilages

61 Remember the Muscle Pattern

62 Pharyngeal Arch Muscles First arch Muscles you know Temporalis muscle

63 Pharyngeal Arch Muscles First arch Muscles you know Masseter muscle

64 Pharyngeal Arch Muscles First arch Muscles you know Medial pterygoid muscle

65 Pharyngeal Arch Muscles First arch Muscles you know Lateral pterygoid muscle

66 Pharyngeal Arch Muscles First arch Muscles you know Anterior digastricus muscle

67 Pharyngeal Arch Muscles First arch Muscles you know Tensor tympani muscle

68 Pharyngeal Arch Muscles First arch New muscles Mylohyoid muscle

69 Pharyngeal Arch Muscles First arch New muscles Tensor veli palatini muscle

70 Pharyngeal Arch Muscles First arch Summary 4 pairs Nerve?

71 Pharyngeal Arch Muscles Second arch Muscles you know Muscles of facial expression

72 Pharyngeal Arch Muscles Second arch Muscles you know Posterior digastricus muscle

73 Pharyngeal Arch Muscles Second arch Muscles you know Stapedius muscle

74 Pharyngeal Arch Muscles Second arch New muscles Stylohyoid muscle

75 Pharyngeal Arch Muscles Second arch Summary Migration or not? Nerve?

76 Pharyngeal Arch Muscles Third arch Muscles you know Stylopharyngeus muscle Nerve?

77 Pharyngeal Arch Muscles Fourth arch New muscles Levator veli palatini muscle

78 Pharyngeal Arch Muscles Fourth arch New muscles Palatoglossus muscle

79 Pharyngeal Arch Muscles Fourth arch New muscles Palatopharyngeus muscle

80 Pharyngeal Arch Muscles Fourth arch New muscles Muscularis uvulae

81 Pharyngeal Arch Muscles Fourth arch New muscles Superior constrictor muscle

82 Pharyngeal Arch Muscles Fourth arch New muscles Middle constrictor muscle

83 Pharyngeal Arch Muscles Fourth arch New muscles Inferior constrictor muscle

84 Pharyngeal Arch Muscles Fourth arch New muscles Cricothyroideus muscle

85 Pharyngeal Arch Muscles Third and Fourth arch Review

86 Pharyngeal Arch Muscles Third and Fourth arch Review

87 Occipital Somite Muscles Occipital somite 1-6th arch New muscles Posterior cricoarytenoid muscle

88 Occipital Somite Muscles Occipital somite 1-6th arch New muscles Transverse arytenoid muscle

89 Occipital Somite Muscles Occipital somite 1-6th arch New muscles Oblique arytenoid muscle Aryepiglotticus muscle

90 Occipital Somite Muscles Occipital somite 1-6th arch New muscles Lateral cricoarytenoid muscle

91 Occipital Somite Muscles Occipital somite 1-6th arch New muscles Thyroarytenoid muscle Vocalis muscle

92 Occipital Somite Muscles Occipital somite 1-6th arch New muscles Thyroepiglotticus muscle

93 Occipital Somite Muscles Occipital somite 1-6th arch Review

94 4th Arch/Occipital Somite Muscles Summary Think cranial end of gut tube Nerve?

95 Occipital Somite Muscles Occipital somites 2 to 4 Muscles you know Extrinsic tongue muscles Intrinsic tongue muscles

96 Lateral Head Muscles Muscles you know Trapezius muscle Sternocleidomastoid muscle

97 Prechordal Mesoderm Muscles Muscles you know Extrinsic eye muscles

98 Functional Anatomy of Eye Muscles Keys: axes of eyeball rotation and direction of muscle contraction

99 Functional Anatomy of Eye Muscles Eye movements SUPERIOR Medial rectus muscle MEDIAL INTORSION ADDUCTION E L E V A T I O N D E P R E S S I O N ABDUCTION EXTORSION LATERAL Medial EXTORSION INTORSION Lateral INFERIOR Left Eye, Anterior View

100 Functional Anatomy of Eye Muscles Eye movements SUPERIOR Lateral rectus muscle MEDIAL INTORSION ADDUCTION E L E V A T I O N D E P R E S S I O N ABDUCTION EXTORSION LATERAL Medial EXTORSION INTORSION Lateral INFERIOR Left Eye, Anterior View

101 Functional Anatomy of Eye Muscles Eye movements SUPERIOR Superior rectus muscle MEDIAL INTORSION ADDUCTION E L E V A T I O N D E P R E S S I O N ABDUCTION EXTORSION LATERAL Medial EXTORSION INTORSION Lateral INFERIOR Left Eye, Anterior View

102 Functional Anatomy of Eye Muscles Eye movements SUPERIOR Inferior oblique muscle MEDIAL INTORSION ADDUCTION E L E V A T I O N D E P R E S S I O N ABDUCTION EXTORSION LATERAL Medial EXTORSION INTORSION Lateral INFERIOR Left Eye, Anterior View

103 Functional Anatomy of Eye Muscles Eye movements SUPERIOR Inferior rectus muscle MEDIAL INTORSION ADDUCTION E L E V A T I O N D E P R E S S I O N ABDUCTION EXTORSION LATERAL Medial EXTORSION INTORSION Lateral INFERIOR Left Eye, Anterior View

104 Functional Anatomy of Eye Muscles Eye movements SUPERIOR Superior oblique muscle MEDIAL INTORSION ADDUCTION E L E V A T I O N D E P R E S S I O N ABDUCTION EXTORSION LATERAL Medial EXTORSION INTORSION Lateral INFERIOR Left Eye, Anterior View

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