Muscles of neck

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Dr. Waqas Nawaz
PMAS Arid Agriculture University Rawalpindi Pakistan

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Muscles of neck

  1. 1. ANAT-102DVM 2ndMuscles of NeckComparative Anatomy of Horse, Dog & OxSubmitted to: Dr. Zeeshan AkbarSubmitted by: Waseem Akram12-arid-5Faculty of Veterinary & Animal SciencesPMAS Arid Agriculture University Rawalpindi
  2. 2. Muscles of Neck1-Brachiocephalicus: Horse: Divided into two parts;i) Cleido-mastoideusii) Cleido-transversarius Ox: Divided into two parts;i) Cleido-mastoideusii) Cleido-occipitalus Dog: Divided into two parts;i) Cleido-mastoideusii) Cleido-cervicalis2-Sternocephalicus: Horse: Long & Narrow Ox: Two branches Dog: Thicker & well developed3-Cutaneous Colli: Horse: Thicker & two branchesi) Cervicisii) Thorax Ox: Thick & one branch is present which is Thorax while Cervicis is absent Dog: Both Cervicis & Thorax is present4-Sternothyroidus: Horse: Longer & cylindrical Ox: Relatively more Thick Dog: Thinner & have two parts;i) Cranialii) Caudal5-Omohydious: Horse: Well developed & near the jugular vein Ox: Less developed Dog: Absent
  3. 3. 6-Scalenus: Horse: Deeply situated in posterior half of neck & have two parts;i) Scalenus ventralisii) Scalenus dorsalis Ox: Has three parts;i) Scalenus dorsiii) Scalenus ventralisiii) Scalenus medialis Dog: Has two parts;i) Scalenus dorsiii) Scalenus ventralis7-Rectus Capitus Ventralis Major (Longus Capitus): Horse: Longest among flexors of head Ox: Relatively longer but not longest Dog: Smaller8- Rectus Capitus Dorsalis Major: Horse: Extends from axis to occipital bone Ox: Same like horse Dog: Same like horse9-Rectus Capitus Lateralis: Horse: Smaller Ox: Same like horse Dog: Same like horse10:Longus Colli (Push head & Neck downward): Horse: Covers ventral surface of vertebrae Ox: Same like horse Dog: Same like horse11-Splenius: Horse: Thinner but extensive Ox: Two parts; i) Capitus ii) Cervicalus Dog: Undivided….Only Capitus is present
  4. 4. 12-Trapezius Cervicalis: Horse: Flat, Triangular & more distinct Ox: Undivided, Somewhat thin & Undistinct Dog: Same like horse13-Intertransvales: Horse: More distinct & six fasiculae Ox: Less distinct Dog: More fleshy & somewhat like horse14-Rhomboidous Cervicalis: Horse: Thin & divided Ox: More thick & undivided Dog: Same like horse15-Serratus Cervucalis: Horse: Long & Fan shaped Ox: Very thin Dog: Same like horse16-Longissmus Capitus et atlantis: Horse: Two portionsi) Longismus Dorsiii) Longissmus Costarum Ox: Undivided Dog: Two parts same like horse

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