ANAT 315 Lecture Notes - Lecture 3: Lippincott Williams & Wilkins, Latissimus Dorsi Muscle, Thoracolumbar Fascia

• School: McGill University
• Department: Anatomy & Cell Biology
• Course: ANAT 315
• Professor: Nicole Ventura

Document Summary

Anat 315: anatomy of the limbs and back. Back: superficial muscles, primary function is movement of upper limb. Back: muscles with attachment sites on the vertebrae or ribs, primary function is movement and support of vertebral column, innervation: posterior rami of spinal nerves. Extrinsic muscles of the back: 1st superficial layer. Synergists: bilateral function: extension of the neck, unilateral function: ipsilateral lateral flexion, contralateral rotation of the cervical spine. Latissimus dorsi: bilateral function extension, unilateral function ipsilateral, lateral flexion of the lumbar spine. Extrinsic muscles of the back 2nd superficial layer. Stretches from the cervical spine down to the superomedial border of the scapula. Stretches from the cervical and thoracic spine to the inferomedial border of the scapula. Copyright 2014 by lippincott williams & wilkins. Extrinsic muscles of the back: 3rd superficial layer. Cvii to tiv to the first 4 ribs. Stretches from thoracolumbar fascia and sps of lower thoracic vertebrae up to ribs 9-12.