Musculus digastricus

The video tutorial explains the anatomy and function of the suprahyoid muscles, focusing on the digastricus muscle. It details the structure, embryological origins, and innervation of the anterior and posterior venters. The anterior venter originates from the fossa digastrica and is innervated by the mylohyoid nerve, while the posterior venter originates from the incisura mastoidea and is innervated by the facial nerve. The tutorial also covers the functional movements of the digastricus muscle, including its role in moving the mandible and tongue.

What is the primary function of the digastricus muscle?

• To assist in chewing

• To connect the mandible to the temporal bone

• To form the floor of the mouth

• To elevate the tongue

Where does the anterior venter of the digastricus muscle originate?

• From the temporal bone

• From the pharyngeal arch

• From the mastoid process

• From the fossa digastrica

Which nerve innervates the anterior venter of the digastricus muscle?

• Glossopharyngeal nerve

• Mylohyoid nerve

• Hypoglossal nerve

• Facial nerve

What is the origin of the posterior venter of the digastricus muscle?

• Temporal arch

• First pharyngeal arch

• Second pharyngeal arch

• Mandibular arch

Which nerve supplies the posterior venter of the digastricus muscle?

• Trigeminal nerve

• Accessory nerve

• Facial nerve

• Vagus nerve