Anterior Triangles

Question 1

Identify the 4 triangles of the anterio neck depicted in the image

Answer 1

Question 2

Which two triangles of the neck are in a suprahyoid position?

Answer 2

Submental and Submandibular

Question 3

What are the boundaries of the submandibular triangle?

Answer 3

Inferior margin of the mandible

Posterior belly of the digastric

Anterior belly of the digastric

Question 4

What is the structure that separates the submental and submandibular triangles?

Answer 4

Anterior belly of the digastric

Question 5

Identify the muscles (3) indicated in the photo. Name their origins, insertions, and innervations.

Answer 5

• Digastric muscle
  
  • Antior belly
    
    • Origin: Inside mentum of the mandible (most inferior)
    • Insertion: Hyoid bone
    • Innervation: Facial Nerve (CNVII)
  • Poserior belly
    
    • Origin: Mastoid process
    • Insertion: Hyoid bone
    • Innervation: Nerve to the mylohyoid
• Mylohyoid muscle
  
  • Origin: Mylohyoid line of the mandible
  • Insertion: Hyoid bone
  • Innervation: nerve to the mylohyoid
• Stylohyoid muscle
  
  • Origin: Styloid process
  • Insertion: Hyoid bone
  • Innervation: Facial Nerve (CNVII)