Intermediate Infrahyoid Muscles Quiz

Q1. Which infrahyoid muscles form the superficial layer?

• Thyrohyoid and digastric
• Sternothyroid and thyrohyoid
• Sternohyoid and omohyoid
• Mylohyoid and geniohyoid

Q2. Which infrahyoid muscles form the deeper layer?

• Sternothyroid and thyrohyoid
• Digastric and stylohyoid
• Mylohyoid and hyoglossus
• Sternohyoid and omohyoid

Q3. Where does sternothyroid insert?

• Mastoid process
• Oblique line of the thyroid cartilage
• Superior nuchal line
• Body of the mandible

Q4. Where does thyrohyoid insert superiorly?

• Styloid process
• Cricoid lamina
• Coronoid process
• Body and greater horn of the hyoid bone

Q5. Which roots mainly provide motor fibers through the ansa cervicalis to sternohyoid, sternothyroid, and omohyoid?

• C1-C3 cervical spinal fibers
• T1-T4 sympathetic fibers
• CN IX and CN X fibers
• C5-T1 spinal fibers

Q6. How do motor fibers reach thyrohyoid?

• C5 fibers travel with the accessory nerve
• C1 fibers travel with the hypoglossal nerve
• Vagus fibers travel with the recurrent laryngeal nerve
• C3 fibers travel with the phrenic nerve

Q7. What connects the two bellies of omohyoid?

• An intermediate tendon
• The thyroid isthmus
• A synovial joint
• A cartilage plate

Q8. What is the relationship of the omohyoid intermediate tendon to deep cervical fascia?

• It lies freely inside the carotid artery
• It is held by a fascial sling
• It attaches directly to the tracheal mucosa
• It is enclosed within the thyroid gland

Q9. Which muscle divides the posterior triangle into occipital and omoclavicular triangles?

• Thyrohyoid
• Inferior belly of omohyoid
• Sternothyroid
• Sternohyoid

Q10. Which infrahyoid muscle can elevate the larynx when the hyoid is fixed?

• Sternothyroid
• Inferior belly of omohyoid
• Thyrohyoid
• Sternohyoid