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

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

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. Cranial Dorsal Caudal Dorsal Cranial Ventral Caudal Ventral

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

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

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

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

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

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

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

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

17. Lateral view Ventral (Anterior) view

18. The Lumbosacral Plexus Obturator (Peroneal)

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

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

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

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

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

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

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

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

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

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