Anat 3 Lab

Front 1

• Muscular Triangle
o Boundaries

Back 1

 Superior belly of omohyoid m
 Anterior border of sternocleidomastoid (SCM) m
 Median plane of neck

Front 2

• Muscular Triangle contents

Back 2

 Infrahyoid mm
 Thyroid gland
 Parathyroid glands

Front 3

• Submandibular Triangle
o Boundaries:

Back 3

 Inferior border of mandible
 Anterior belly of digastric m
 Posterior belly of digastric m
 Supf/roof: superficial layer of deep cervical (prevertebral) Fa.
 Deep/floor: mylohyoid m and hypoglossus m (both within the mandible

Front 4

• Submandibular Triangle o Contents

Back 4

 Submandibular gland
 Facial a
 Facial v
 Stylohyoid m
 Part of CN XII (hypoglossal n)
 Lymph nodes

Front 5

 Sternohyoid m function

Back 5

depresses hyoid bone

Front 6

 Sternothyroid m function

Back 6

thyroid cartilage; depresses larynx)

Front 7

 Thyrohyoid m function

Back 7

elevates larynx

Front 8

• Carotid Triangle boundaries

Back 8

 Superior belly of omohyoid m
 Anterior border of SCM m
 Posterior belly of digastric m

Front 9

o Carotid triangle Contents

Back 9

 Carotid aa.
• Common, internal, external
 Branches of external carotid a.
• Superior thyroid a.
o Gives rise to the superior laryngeal a.
• Ascending pharyngeal a.
• Lingual a.
• Occipital a.
• Facial a.
• Posterior auricular a.*
• Maxillary a.*
• Superficial temporal a.*

Front 10

Ansacervicalis-inferior root from

Back 10

C2, C3

Front 11

Ansa Cervicalis superior root from

Back 11

from C1

Front 12

Ansa Cervicalis innervates all

Back 12

infrahyoid mm (omohyoid m, thyrohyoid m (by C1), sternohyoid m, sternothyroid

Front 13

Ant belly of digastric: mylohyoid n, innervation from

Back 13

CNV3

Front 14

Posterior belly of digastric innvervated by

Back 14

CN VII (facial

Front 15

In btw the first rib & the ant surf of scapula, it’s the

Back 15

axillary inlet or cervical axillary canal. This area can impeach of structures of brachial plexus.

Front 16

triangle where pulse can b taken

Back 16

The carotid triang

Front 17

Carotid line: begins behind sternoclavicular joint and from here we aim to btw mastoid process and angle of the mandible. At Cv4 common carotid bifurcates and carotid line follows

Back 17

external carotid a

Front 18

Superior border of thryoid cartilage delineates

Back 18

the branching point of the common carotid

Front 19

External jugular vein lies in subcutaneous tissue so is superficial to investing fascia and it forms deep to the parotid gland by

Back 19

posterior auricular vein and the retromandibular vein (superficial temporal and maxillary vein

Front 20

Deep cervical nodes are next to the

Back 20

carotid sheath

Front 21

Jugulodigastric node at

Back 21

crossing of the posteior belly of the digastric to IJV. This node that get swollen when infection, strep throat etc

Front 22

Where the superior belly of the omohyoid crosses the IJV theres the

Back 22

jugulo-omohyoid node

Front 23

Accesory nerve passes through the posterior triang. Along this acc nerve theres an accesory chain of nodes and connect to the deep cervical nodes and to transeverse cervical nodes. In surgery in the posterior triang when theres cancer is neccesary to remove this nodes so it is important to

Back 23

to preserve the acc nerve