Difference between revisions of "Pelvic Girdle Muscles - Horse Anatomy"
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The pelvic girdle musculature ('''sublumbar muscle''') is made up of a number of distinct muscle groups. These arise from the lumbar vertebrae and insert on the pelvis or [[Limb Bones and Cartilages - Horse Anatomy#Femur|femur]]. These muscles function in dorsiflexion and ventriflexion of the spine. They also provide stabilisation to the vertebral column and pelvis. | The pelvic girdle musculature ('''sublumbar muscle''') is made up of a number of distinct muscle groups. These arise from the lumbar vertebrae and insert on the pelvis or [[Limb Bones and Cartilages - Horse Anatomy#Femur|femur]]. These muscles function in dorsiflexion and ventriflexion of the spine. They also provide stabilisation to the vertebral column and pelvis. | ||
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Revision as of 20:23, 9 January 2013
The pelvic girdle musculature (sublumbar muscle) is made up of a number of distinct muscle groups. These arise from the lumbar vertebrae and insert on the pelvis or femur. These muscles function in dorsiflexion and ventriflexion of the spine. They also provide stabilisation to the vertebral column and pelvis.
Psoas Minor
- Innervation:Intercostal n., Femoral n.
- Origin: Last three thoracic vertebrae and 1st-4th lumbar vertebrae
- Insertion: ilium
- Action: Fixator, flexes lumbar vertebral column
- The muscle is marked by multiple tendinous intersections.
Iliac
- The iliac muscle is a fleshy muscle that is cross-sectionally flat cranially and round caudally.
- Innervation:Lumbar n., Genitofemoral n., Femoral n.
- Origin: Two heads, a strong lateral head and small medial head. They enclose the greater psoas and will unite to form a common tendon for insertion.
- Insertion: Lesser trochanter of the femur
Quadrate Lumbar
- Thin, tendinous muscle
- Innervation: Intercostal n., ventral branches of Lumbar n., Genitofemoral n., Femoral n.
- Origin: Proximal end of last rib and transverse process of the cranial lumbar vertebrae
- Insertion: Transverse processes of caudal lumbar vertebrae, wing of the sacrum, wing of the ilium
- Action: Fixator of lumbar vertebral column
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