Anatomy of the Muscular System: Introduction & Muscles of the Head, Neck, and Trunk
Anatomy of the Muscular System: Introduction & Muscles of the Head, Neck, and Trunk. Sternocleidomastoid Origin: Sternal end of clavicle and manubrium Insertion: Mastoid region of skull Action: Bilateral: Neck flexion Unilateral: Turns face to opposite side Innervation: Accessory nerve (CN XI) Splenius Capitis Origin: Spinous process/ligaments of inferior cervical vertebrae Insertion: Mastoid process, occipital bones of skull Action: Bilateral extend head Unilateral laterally flexes neck to same side Innervation: Cervical spinal nerves Longissimus cervicis Origin: transverse processes of superior thoracic vertebrae Insertion: transverse process of middle and superior cervical vertebrae Action: Bilateral extend head Unilateral laterally flexes neck to same side Innervation: Cervical and thoracic spinal nerves Longissimus thoracis Origin: Transverse process of inferior thoracic, superior lumbar vertebrae Insertion: Transverse process of middle and superior cervical vertebrae Action: Bilateral extend head Unilateral laterally flexes neck to same side Innervation: Thoracic and lumbar spinal nerves Thyrohyoid Origin: Thyroid cartilage of larynx Insertion: Hyoid bone Action: Elevates thyroid, depresses hyoid bone Innervation: Hypoglossal nerve
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Document information
- Uploaded on
- August 7, 2022
- Number of pages
- 221
- Written in
- 2021/2022
- Type
- Class notes
- Professor(s)
- Martin stewart
- Contains
- All classes
Subjects
- internal oblique
- transverse abdominis
- muscles of breathing
- neck
- and trunk
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muscles of the head and neck
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anatomy of the muscular system introduction amp muscles of the head