Page 155 - Anatomy and Physiology of Farm Animals, 8th Edition

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Table 7-4. Continued
Muscle Origin Insertion Primary Actions Innervation
m. sternohyoideus Manubrium Hyoid apparatus Retracts hyoid and tongue C1
m. sternothyroideus Manubrium Larynx Retracts larynx C1
m. longus colli Cervical and first few thoracic Adjacent vertebrae Flexion of neck Spinal nn.
vertebrae
m. longus capitis Cervical vertebrae Base of skull Flexion of head/neck Spinal nn.
m. psoas major Ventral side of lumbar vertebrae Lesser trochanter of femur Hip flexion, flexion of lumbar spine Spinal nn.
m. psoas minor Last few thoracic and first few Ilium Flexion of lumbar spine Spinal nn.
lumbar vertebrae
m. quadratus lumborum Ventral side lumbar vertebrae Sacrum and nearby ligaments Flexion of lumbar spine (weak) Spinal nn.
m. rectus abdominis Costal cartilages Brim of pelvis Compress abdominal viscera, flex spine Spinal nn.
m. obliquus externus Ribs Brim of pelvis, linea alba, Compress abdominal viscera Spinal nn.
abdominis tuber coxae
m. obliquus internus Tuber coxae and nearby Caudal ribs, linea alba, brim of Compress abdominal viscera Spinal nn.
abdominis ligaments pelvis
m. transversus abdominis Caudal ribs, lumbar vertebrae Linea alba Compress abdominal viscera Spinal nn.
mm. intercostales externi Intercostal spaces Inspiration Spinal nn.
mm. intercostales interni Intercostal spaces Expiration Spinal nn.
cr. n. = cranial nerve; n(n). = nerve(s)