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Biology 223 Human Anatomy and Physiology I Week 6; Lecture 1; Monday Dr. Stuart S. Sumida

Biology 223 Human Anatomy and Physiology I Week 6; Lecture 1; Monday Dr. Stuart S. Sumida. Appendicular Musculature. Innervation:. Dorsal Ramus. Hypaxial. Distal Dorsal Branch. Epaxial. Distal Ventral Branch. Ventral Ramus. Each limb receives more than 1 nerve: Usually about 6.

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Biology 223 Human Anatomy and Physiology I Week 6; Lecture 1; Monday Dr. Stuart S. Sumida

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  1. Biology 223 Human Anatomy and Physiology I Week 6; Lecture 1; Monday Dr. Stuart S. Sumida Appendicular Musculature

  2. Innervation: Dorsal Ramus Hypaxial Distal Dorsal Branch Epaxial Distal Ventral Branch Ventral Ramus

  3. Each limb receives more than 1 nerve: Usually about 6

  4. More Posterior branches extend more distally

  5. Limb Quadrants

  6. Dorsal Mass elevates (extends) limb Ventral Mass depresses (flexes) limb

  7. Caudal Dorsal Cranial Dorsal Cranial Ventral Caudal Ventral

  8. Cranial (Superior) Dorsal (Posterior) Cranial (Superior) Ventral (Anterior) Caudal (Inferior) Dorsal (Posterior) Caudal (Inferior) Ventral (Anterior)

  9. Cranial/Ventral: (Superior/Anterior) Attaches to pubic bone

  10. Caudal/Ventral Inferior/Anterior): Attaches to Ischium

  11. Cranial/Dorsal Superior/Posterior): Attaches to upper part of ilium

  12. Caudal/Dorsal Inferior/Posterior): Attaches to lower part of ilium

  13. Cranial/Ventral Superior/Anterior Cranial/Dorsal Superior/Posterior Caudal/Ventral Inferior/Anterior Caudal/Dorsal Inferior/Posterior

  14. Caudal view Cranial (Superior) Ventral (Anterior) Cranial (Superior) Dorsal (Posterior) Caudal (Inferior) Dorsal (Posterior) Caudal (Inferior) Ventral (Anterior) Dorsal view Ventral view Lateral view

  15. Cranial (Superior) Ventral (Anterior) Cranial (Superior) Dorsal (Posterior) Caudal (Inferior) Dorsal (Posterior) Caudal (Inferior) Ventral (Anterior) Mammals = “Non- Sprawling” Posture Reptiles= “Sprawling” Posture

  16. Ventral (Anterior) view Lateral view

  17. The Lumbosacral Plexus Obturator (Peroneal)

  18. Superior/Posterior (Cranial/dorsal) QUADRICEPS FEMORAL NERVE Sartorius Rectus Femoris Vastus Medialis Vastus Lateralis

  19. Inferior/Posterior (Caudal/dorsal) GLUTEAL GROUP SCIATIC NERVE (PERONEAL) Maximus Tensor Fascia Latae Minumus Medius

  20. Inferior/Posterior (Caudal/dorsal) ANTERIOR TIBIAL GROUP PERONEI SCIATIC NERVE (PERONEAL) Tibialis Anterior Peronius Longus Extensor Digitorum Longus Peronius Brevis Extensor Hallucus Longus

  21. Superior/Anterior (Cranial/ventral) ADDUCTORS OBTURATOR NERVE Gracilis Adductor Brevis Adductor Longus

  22. Inferior/Anterior (Caudal/ventral) Adductor Magnus (adductor part)

  23. Inferior/Anterior (Caudal/ventral) HAMSTRINGS SCIATIC NERVE (TIBIAL) Semitendinosis Semimembranosis Biceps Femoris

  24. Inferior/Anterior (Caudal/ventral) SCIATIC NERVE (TIBIAL) Gastrocnemus

  25. Inferior/Anterior (Caudal/ventral) SCIATIC NERVE (TIBIAL) Soleus

  26. Inferior/Anterior (Caudal/ventral) SCIATIC NERVE (TIBIAL) Flexor Digitorum Longus Flexor Hallucis Longus

  27. Inferior/Anterior (Caudal/ventral) LATERAL HIP ROTATORS SCIATIC NERVE (TIBIAL) Quadratis Femoris

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