Digastric muscle

Digastric muscle

Assessment

Interactive Video

Health Sciences, Biology

University - Vocational training

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The video discusses the digastric muscle, a suprahyoid muscle forming the mouth's floor. It has two parts: the anterior and posterior bellies, each with distinct origins and nerve supplies. The anterior belly originates from the digastric fossa and is innervated by the mylohyoid nerve, while the posterior belly originates from the mastoid notch and is innervated by the facial nerve. These muscles aid in chewing, swallowing, and speech, and are crucial for hyoid bone positioning. The digastric muscle also divides the neck's anterior triangle into smaller sections. The video promotes Kenhub as a learning resource.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which group of muscles does the digastric muscle belong to?

Infrahyoid muscles

Suprahyoid muscles

Facial muscles

Neck muscles

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the origin of the anterior belly of the digastric muscle?

Styloid process

Hyoid bone

Digastric fossa of the mandible

Mastoid notch of the temporal bone

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which nerve innervates the anterior belly of the digastric muscle?

Glossopharyngeal nerve

Mylohyoid nerve

Hypoglossal nerve

Facial nerve

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

From which pharyngeal arch does the posterior belly of the digastric muscle arise?

Second pharyngeal arch

First pharyngeal arch

Third pharyngeal arch

Fourth pharyngeal arch

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of the posterior belly of the digastric muscle?

Draws back the hyoid bone

Depresses the mandible

Pulls the mandible forward

Elevates the larynx