Triangles of the neck

Question 1

What are the two main triangles of the neck?

Answer 1

Anterior triangle

Posterior triangle

Question 2

What are the borders of the anterior triangle of the neck?

Answer 2

Superior

Medial

Lateral

Roof

Question 3

What is the superior border of the anterior triangle of the neck?

Answer 3

Inferior border of mandible

Question 4

What is the medial border of the anterior triangle of the neck?

Answer 4

Imaginary line down middle of neck

Question 5

What is the lateral border of the anterior triangle of the neck?

Answer 5

Medial border of sternocleidomastoid

Question 6

What is the roof of the anterior triangle of the neck?

Answer 6

Investing layer of deep cervical fascia

Question 7

What are the contents of the anterior triangle of the neck?

Answer 7

Supra-hyoid muscles

Infra-hyoid muscles

Carotid sheath

Question 8

What do the structures contained in the anterior triangle of the neck travel between?

Answer 8

The head

and the thorax

Question 9

What can the anterior triangle of the neck be narrowed down into?

Answer 9

Carotid triangle

Question 10

What are the borders of the carotid triangle?

Answer 10

Lateral

Superior

Inferior

Question 11

What forms the lateral border of the carotid triangle?

Answer 11

Medial border of sternocleidomastoid

Question 12

What forms the superior border of the carotid triangle?

Answer 12

Anterior belly of digastric

Question 13

What forms the inferior border of the carotid triangle?

Answer 13

Superior belly of omohyoid

Question 14

What does the carotid traingle contain?

Answer 14

Carotid sheath

Question 15

What does the common carotid artery do in the carotid triangle?

Answer 15

Bifurcates into internal and external carotid arteries

Question 16

What are the borders of the posterior triangle of the neck?

Answer 16

Medial

Lateral

Inferior

Question 17

What is the medial border of the posterior triangle of the neck?

Answer 17

Lateral border of sternocleidomastoid

Question 18

What is the lateral border of the posterior triangle of the neck?

Answer 18

Medial border of trapezius

Question 19

What is the inferior border of the posterior traingle oft the neck?

Answer 19

Middle third of clavicle

Question 20

What are the contents of the posterior triangle of the neck?

Answer 20

Inferior belly of omohyoid
Anterior scalene 
Middle scalene 
Posterior scalene 
Levator scapulae

Subclavian artery
Subclavian vein
External jugular vein

Brachial plexus trunks
Accessoy nerve
Phrenic nerve

Question 21

How does the inferior belly of omohyoid pass through the posterior triangle of the neck?

Answer 21

Travels in an infero-lateral direction

Question 22

Where is the subclavian artery located in the posterior triangle of the neck?

Answer 22

Between the anterior and middle scalene muscles

Question 23

When does the external jugular vein enter the posterior triangle?

Answer 23

After it has passed over sternocleidomastoid

Question 24

How does the external jugular vein enter the posterior triangle?

Answer 24

Pierces investing layer of fascia

to drain into subclavian vein

Question 25

Where are the roots of the brachial plexus located in the posterior triangle of the neck?

Answer 25

Between the anterior and middle scalene muscles

Question 27

Where is the phrenic nerve located in the posterior triangle of the neck?

Answer 27

Superficial to the anterior scalene muscle

Question 28

What do the structures contained in the posterior triangle of the neck travel between?

Answer 28

Neck/thorax

and upper limb