AP 2.2 - triangles of the neck

What is highlighted

Superficial cervical fascia

What muscle is highlighted

Platysma

What nerve is the platysma innervated by

Facial nerve

What nerve is highlighted

Facial nerve

What are the boundaries for the anterior triangle of the neck

Anterior border of sternocleidomastoid, inferior border of mandible, midline of the neck

What muscle is highlighted

Sternocleidmastoid

What muscle is highlighted

Omohyoid

30

Sternocleidomastoid

What muscle is highlighted

Digastric muscle

7

Digastric posterior belly

What action does the omohyoid do

Depression of the hyoid

What is the omohyoid innervated by

Ansa cervicalis

What nerve is highlighted

Ansa cervicalis

29 + 62

Ansa cervicalis

62

Upper root of ansa cervicalis

29

Lower root of ansa cervicalis

What movement does the digastric muscle do

Elevation of hyoid, depression of mandible

What is highlighted

Posterior belly of digastric muscle

What is highlighted

Anterior belly of digastric

What is the anterior belly of the digastric muscle innervated by

Digastric branch of nerve to mylohyoid muscle/Mylohyoid nerve, branch of mandibular division of trigeminal nerve

What is the posterior belly of the digastric muscle innervated by

Branch of facial nerve (cranial nerve VII)

What nerve is highlighted

Mylohyoid nerve

What is highlighted

Digastric branch of facial nerve

33

Mylohyoid nerve

5

Facial nerve

What action does the sternocleidomastoid do when both sides contract

Flexion of the neck

What action does the sternocleidomastoid do when one side contracts

Rotation of the neck to opposite side

What is the sternocleidmastoid innervated by

Spinal accessory nerve (CN 11)

What is the sternocleidoomastoid attached to

Sternum, clavicle, mastoid process

What nerve is highlighted

Spinal accessory nerve (CN XI)

What is highlighted in green

Mastoid process

What bone is highlighted

Hyoid bone

What are the suprahyoid muscles

Digastric, stylohyoid, mylohyoid, geniohyoid

What muscle is highlighted

Stylohyoid

What action does the stylohyoid do

Elevation of the hyoid bone

What muscle is highlighted

Mylohyoid

What muscle is highlighted

Geniohyoid

What action does the mylohyoid do

Elevates floor of mouth and hyoid bone

What action does the geniohyoid do

Depression of mandible, elevation of hyoid

What are the boundaries of the carotid triangle

Anterior border of sternocleidomastoid, superior belly of omohyoid anterio-inferiorly, posterior belly of digastric superiorly

What does this triangle refer to

Carotid triangle

What is highlighted in green

Carotid sheath

What is highlighted in green

Deep cervical fascia

What are the vessels, nerves and lymph nodes in the carotid sheath

Common carotid artery, internal carotid artery, internal jugular vein, vagus nerve

What is is highlighted in pink

Common carotid artery

What is highlighted in pink

Internal carotid artery

What is highlighted in pink

Internal jugular vein

What is highlighted in pink

Vagus nerve

What is highlighted in pink

External carotid artery

What is highlighted in pink

Maxillary artery

What is highlighted in pink

Superior thyroid artery

What is highlighted in pink

Lingual artery

What is highlighted in pink

Facial artery

What is highlighted in pink

Occipital artery

What is highlighted in pink

Ascending pharyngeal artery

8

Common carotid artery

22

Internal jugular vein

63

Vagus nerve

16

Internal carotid artery

18 

Maxillary artery

8

Facial artery

56

Superior thyroid artery

23

Lingual artery

34

Occipital artery

1

Ascending pharyngeal artery

What does the IJV drain directly into

Right atrium

What nerves are found in the carotid triangle

Vagus, hypoglossal, spinal accessory, ansa cervicalis

19

Hypoglossal nerve

What is highlighted in pink

Hypoglossal nerve

12

Spinal accessory nerve

What does ansa cervicalis originate from

C1-C3

What does ansa cervicalis supply

Omohyoid, sternohyoid, sternothyroid

What does this triangle refer to

Submental triangle

What does this triangle refer to

Submandibular triangle

What does this triangle refer to

Muscular triangle

What is highlighted in pink

Submental lymph nodes

What is highlighted in purple

Submental veins

What is highlighted in purple

Anterior jugular veins

What is highlighted in green

Submandibular gland

33

Submandibular gland

What is highlighted in green

Parotid gland

20

Parotid gland

What is highlighted in green

Submandibular lymph nodes

What is highlighted in purple

Facial vein

10

Facial vein

8

Facial vein

What is the floor of the submandibular triangle formed by

Mylohyoid, hyoglossus

What is highlighted

Hyoglossus

17

Hyoglossus

12

Hyoglossus

What is highlighted in green

Thyroid cartilage of larynx

What is highlighted in green

Cricoid cartilage

What is highlighted in green

Thyroid gland

What is highlighted in green

Parathyroid cartilage

What is highlighted in green

Trachea

What is highlighted

Sternohyoid

What is highlighted

Sternothyroid

What is highlighted

Thyrohyoid

What is highlighted in purple

Superior thyroid vein

What is highlighted in pink

Inferior thyroid artery