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Flashcards in the neck Deck (14)
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1
Q

what is the neck?

A

junction between head & thorax
superior limit: mandible/base of skull
inferior limit:thoracic inlet

2
Q

what divides the neck into anterior and posterior portions?

A

sternocleidomastoid

3
Q

what are the attachments of the sternocleidomastoid?

A

proximal: mastoid process
distal: sternum & clavicle

4
Q

what are the boundaries of the anterior triangle?

A

sternocleidomastoid
midline
lower border of mandible

5
Q

what are the boundaries of the posterior triangle?

A

sternocleidomastoid
trapezius
middle 3rd of clavicle

6
Q

what muscles are in the anterior triangle?

A
mylohyoid
anterior belly of digastric
infrahyoid muscles
-sternohyoid
-sternothyroid
-thyrohyoid
-omohyoid
7
Q

what are the skeletal elements in the anterior triangle?

A
thyroid cartilage
-largest of laryngeal
cricoid cartilage
-below thyroid cartilage
hyoid bone
trachea
8
Q

what glands are in the anterior triangle?

A

thyroid gland
parathyroid glands
submandibular glands

9
Q

describe the thyroid gland

A

endocrine
enclosed by pre-tracheal
fascia
supplied by superior and inferior thyroid arteries

10
Q

describe the parathyroid glands

A

superior & inferior sets
5% have >4
superior more constant position

11
Q

what nerves innervate the anterior triangle?

A
vagus
phrenic:
-C3-5
-supplies diaphragm
hypoglossal
12
Q

what vessels supply the anterior triangle?

A

common carotid

jugular veins

13
Q

what nerves supply the posterior triangle?

A
accessory nerve:
-purely motor
-supplies sternocleidomastoid & trapezius
parts of brachial plexus
cutaneous cervical nerves
14
Q

describe lymph nodes in the posterior triangle

A
small oval/bean shaped
filter lymph
offer defence against spread of infection
returned to larger veins
many sites