Head and Neck Muscles: Origin and Innervation (2) Flashcards
Digastric muscles
- Origin: Lower border of the jaw
- Innervation: Mylohyoid branch of the trigeminal nerve (CN05/CN V)
Mylohyoid
- Origin: Interior surface of the mandible
- Innervation: Mylohyoid branch of the trigeminal nerve (CN05/ CN V)
Masseter
- Origin: Zygomatic arch
- Innervation: Mandibular branch of the trigeminal nerve (CN05/ CN V)
Sternothyroid
- Origin: Posterior surface of the sternum
- Innervation: Anterior rami of spinal nerves C01-C03 via the ansa cervicalis of the cervical plexus
Sternohyoid
- Origin: Posterior surface of the sternum and inner clavicle
- Innervation: Anterior rami of spinal nerves C01-C03 via the ansa cervicalis of the cervical plexus
Temporalis
- Origin: Temporal fossa
- Innervation: Mandibular branch of the trigeminal nerve (CN05/ CN V)
Buccinator
- Origin: Alveolar process of the mandible and maxilla
- Innervation: Buccal branch of the facial nerve (CN07/CN VII)
Stylohyoid
- Origin: Lateral surface of the styloid process
- Innervation: Stylohyoid branch of the facial nerve (CN07/CN VII)
Medial pterygoid
- Origin: Medial surface of the lateral pterygoid plate
- Innervation: Mandibular branch of the trigeminal nerve (CN05/ CN V)
Lateral ptergyoid
- Origin: Lateral pterygoid plate
- Innervation: Mandibular branch of the trigeminal nerve (CN05/ CN V)
Thyrohyoid
- Origin: Oblique line of thyroid cartilage
- Innervation: Anterior rami of spinal nerve C01 via the hypoglossal nerve (CN12/ CN XII)
Omohyoid
- Origin: Superior border of the scapula near the suprascapular notch
- Innervation: Anterior rami of spinal nerves C01-C03 via the ansa cervicalis of the cervical plexus
Sternomastoid
- Origin: Manubrium and median raphe
- Innervation: Ventral rami of spinal nerves C01-C03/ accessory nerve (CN11/ CnXI)
Cleidomastoid
- Origin: Mastoid process
- Innervation: Ventral rami of spinal nerves C02 + C03/ accessory nerve (CN11/ CN XI)
Sternocleidomastoid (in humans)
- Origin: Anterior surface of the manubrium and medial third of clavicle
- Innervation: Accessory nerve (CN11/ CN XI) branches from the anterior divisions of spinal nerves C02 + C03