Digastric Muscle

Digastric Muscle

List the relations of the posterior belly of the digastric muscle.
Answer.

Digastric Muscle Superficial relations

• Skin
• Superficial fascia
• Deep fascia
• Mastoid process
• Parotid gland

Digastric Muscle Deep relations

• Transverse process of atlas crossed superficially by spinal accessory nerve.
• Both the internal and external carotid arteries.
• Internal jugular vein.
• The Vagus nerve descends between the internal jugular vein and the internal carotid artery.
• Hypoglossal nerve.
• Along its upper border the posterior auricular branch of the external carotid artery and along its lower border the occipital branch of the external carotid artery pass upwards and laterally.
• Lingual and facial arteries.