The base of the submental triangle is formed by:

# The base of the submental triangle is formed by:

A. Chin

B. Anterior belly of digastric

C. Posterior belly of digastric

D. Hyoid bone

The correct answer is D. Hyoid bone.

Submental triangle is a median triangle. On each side, there is the anterior belly of the corresponding digastric muscles. Its base is formed by the body of the hyoid bone. Its apex lies at the chin. The floor of the triangle is formed by the right and left mylohyoid muscles and the median raphe uniting them.

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All of the infrahyoid muscles are supplied by ansa cervicalis EXCEPT:

 # All of the infrahyoid muscles are supplied by ansa cervicalis EXCEPT:

A. Thyrohyoid

B. Sternohyoid

C. Sternothyroid

D. Inferior belly of omohyoid

The correcct answer is A. Thyrohyoid.

Infrahyoid muscles are sternohyoid, sternothyroid, thyrohyoid and omohyoid present in the superficial plane of the anterior triangle of neck. Sternohyoid, sternothyroid, omohyoid are supplied by ansa cervicalis EXCEPT thyrohyoid which is supplied by the first cervical nerve through hypoglossal nerve.

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Suprahyoid Muscles and Infrahyoid Muscles

 # All of the following belongs to suprahyoid group of muscles EXCEPT:

A. Omohyoid

B. Mylohyoid

C. Stylohyoid

D. Geniohyoid

The correct answer is A. Omohyoid. 

Suprahyoid Muscles are: Digastric, Stylohyoid, Mylohyoid, Geniohyoid   @ Super Stylish Getho and Mylo Di. 

Infrahyoid muscles: Sternohyoid, Sternothyroid, Thyrohyoid, Omohyoid  (SH, ST, TH, OH)

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Torticollis or Wry Neck is the result of:

 # Torticollis or Wry Neck is the result of spasm of which of the following muscles?

A. Omohyoid and sternohyoid

B. Trapezius and Sternocleidomastoid

C. Platysma and mentalis

D. Scaleneus anterior and scaleneus posterior

The correct answer is B. Trapezius and Sternocleidomastoid

Torticollis or Wry neck is a deformity in which the head is bent to one side and the chin points to the other side. This is a result of spasm or contracture of the muscles supplied by the spinal accessory nerve, these being the sternocleidomastoid and the trapezius.

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