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

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Presentation transcript:

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

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

Each limb receives more than 1 nerve: Usually about 6

More Posterior branches extend more distally

Limb Quadrants

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

Cranial Dorsal Caudal Dorsal Cranial Ventral Caudal Ventral

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

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

Caudal/Ventral Inferior/Anterior): Attaches to Ischium

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

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

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

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

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

Lateral view Ventral (Anterior) view

The Lumbosacral Plexus Obturator (Peroneal)

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

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

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

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

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

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

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

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

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

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