Triangles of The Neck

Question 1

What does the anterior triangle divides into

Answer 1

Submental
Submandibular
Carotid
Muscular

Question 2

What does the posterior triangle divides into

Answer 2

Occipital
Subclavian / Supraclavicular

Question 3

Anterior triangle borders

Answer 3

Superior border - Mandible
Anterior border - Midline of neck
Posterior border - Anterior part of Sternocleidomastoid

Question 4

Submental triangle borders and contents

Answer 4

Inferior border - Hyoid bone
Medial border - Midline of neck
Lateral border - Anterior belly of Digastric

Contents:
Submental lymph nodes
Submental veins

Question 5

Submandibular triangle borders and contents

Answer 5

Anterior border - anterior belly of digastric
Posterior border - posterior belly of digastric
Superior border - inferior border of mandible

Contents:
Submandibular lymph nodes
Hypoglossal nerve
Facial artery and vein

Question 6

Carotid triangle borders and contents

Answer 6

Superior border - Posterior belly of digastric
Lateral border - Medial part of sternocleidomastoid
Inferior border - Superior belly of omohyoid

Contents
Common carotid artery
Internal jugular vein
Hypoglossal and vagus nerves

Question 7

Muscular triangle borders and contents

Answer 7

More of a quadrilateral (4 sides)
Base - Hyoid bone
Medial border - Midline of neck
Superolateral border - Superior belly of omohyoid
Inferolateral - Sternocleidomastoid

Contents
Thyroid and parathyroid glands
Larynx
Trachea

Question 8

Boundaries of posterior triangle

Answer 8

Posterior border - Trapezius
Anterior border - Posterior border of SCM
Inferior border - clavicle

Question 9

What splits the posterior triangle into two

Answer 9

Inferior belly of omohyoid

Question 10

Occipital triangle borders and contents

Answer 10

Anterior - Posterior border of SCM
Posterior - Trapezius
Inferior - Inferior belly of omohyoid

Contents:
Spinal accessory
Upper most part of brachial plexus

Question 11

Subclavian / Supraclavicular triangle borders and contents

Answer 11

Anterior border - SCM
Posterior border - Inferior belly of omohyoid
Inferior boundary - Clavicle

Contents:
Subclavian artery and vein
Brachial plexus