Anterior Triangle Of The Neck Flashcards
What seperates the neck into anterior and posterior triangles
Sternocleidomastoid muscle
Boundaries of the anterior triangle of the neck Anterior Posterior Base Roof Apex
A: anterior midline of the neck P:anterior border of SCM B:mandible,and a line from gonion to mastoid R:deep cervical fascia A:supraclavicular notch
Above the roof of the anterior triangle of the neck is?
Superficial fascia which includes platysma, cervical branch of facial nerve, ascending and descending branches of cervical cutaneous nerve
List the suprahyoid muscles
Digastric muscle
Mylohyoid muscle
Stylohyoid muscle
Geniohyoid muscle
List the infrahyoid muscle
Thyrohyoid muscle
Omohyoid muscle
Sternohyoid muscle
Sternothyroid muscle
Anterior triangle of the neck is divided into subdivisions by ———
List the subdivisions
Digastric muscle and superior belly of omohyoid muscle
Cardiac triangle
Submental triangle
Gastric/submandibular triangle
Muscular triangle
Origin and insertion of:
Anterior belly of digastric
Posterior belly of digastric
From mandible to hyoid bone
From mastoid to hyoid bone
Meet at intermediate tendon held by a sling to hyoid bone
Origin and insertion of:
Superior belly of omohyoid
Inferior belly of omohyoid
From intermediate tendon to hyoid bone
From scapula to intermediate tendon
Intermediate tendon is held by sling to clavicle
Hyoid bone is held like a swing by?
And located —-
Stylohyoid ligaments
Under the mandible at C3
Most inferiorly located triangle of the anterior triangle of the neck
Muscular triangle
The dubious triangle of the anterior triangle of the neck is
And why?
Muscular triangle
It has 4 sides , not 3
Borders of muscular triangle
Medially
Superolaterally
Inferiolaterally
Superiorly
Midline of the neck
Superior belly of omohyoid
Inferior portion of SCM
HYOID bone
Contents of the muscular triangle
Pharynx, infrahyoid muscles, thyroid, parathyroid
Why is submandibular triangle called digastric triangle
Because it’s made up of mostly digastric muscles
Borders of digastric triangle
Anteriorly
Posteriorly
Superiorly
Anterior belly of digastric muscle
Posterior belly of digastric muscle
Body of mandible
Contents of digastric triangle
Submandibular gland, facial artery and vein, lymph nodes
Common site for swellings in the anterior triangle of the neck
Digastric triangle
Boundaries of the submental triangle
Inferiorly Medially Laterally Floor Apex
Hyoid bone
Midline of the neck
Anterior belly of digastric muscle
Mylohyoid muscle
Symphysis menti
Contents of the submental triangle
Submental veins, submental lymph nodes, beginning of anterior jugular vein
Borders of the carotid triangle
Superior
Inferior
Lateral
Posterior belly of digastric muscle
Superior belly of omohyoid muscle
Medial border of SCM
Contents of carotid triangle
Common carotid artery Internal carotid artery External carotid artery Internal jugular vein Vagus nerve Hypoglossal nerve Spinal accessory nerve
Which muscle forms part of the bed of carotid triangle
Thyrohyoid muscle
What is a syncope
Loss of consciousness
List the cranial nerves in the Anter triangle of the neck
7,9,10,11,12
Which nerve does the digastric triangle transmit?
Hypoglossal nerve
