The Organization of the Neck III Flashcards
the thyroid & parathyroid glands:
thyroid gland:
two large lobes of the thyroid gland lie anterolateral to the ___ & ___
the ___ unites them across the front of the ___ immediately below the ___
trachea
larynx
isthmus
trachea
larynx
the thyroid & parathyroid glands:
thyroid gland:
sometimes a pointed process, the ___, points upward from the isthmus, usually close to the anterior midline
this may attach by connective tissue to the ___ cartilage or may even extend up to attach to the ___ bone
on the posterior surface, the lobes of the thyroid are attached by dense connective tissue to the ___ cartilage & several of the upper ___
pyramidal lobe
thyroid
hyoid
cricoid
tracheal rings
the thyroid & parathyroid glands:
blood supply of the thyroid gland:
superior thyroid artery:
first (anterior/posterior) branch of the ___ artery
after giving off the ___ artery, passes downward running superficial & parallel to the ___ nerve
it reaches the superior pole of the thyroid gland & divides into ___ & ___ branches
anterior
external carotid
superior laryngeal
external laryngeal
anterior
posterior
the thyroid & parathyroid glands:
blood supply of the thyroid gland:
superior thyroid artery:
anterior branch - supplies the ___ & ___ surfaces of the gland & anastomses w/ its counterpart from the other side
posterior branch - passes to the posterior side & may anastomose w/ branches of the ___ artery
anterior
superior
inferior thyroid
the thyroid & parathyroid glands:
blood supply of the thyroid gland:
inferior thyroid artery:
branch of the ___
runs upward & medially behind the ___ to reach the posterior aspect of the gland
gives off a number of branches including the ___ & ___, which accompanies the ___ nerve to the larynx
thyrocervical trunk
carotid sheath
ascending cervical
inferior laryngeal
recurrent laryngeal
the thyroid & parathyroid glands:
blood supply of the thyroid gland:
inferior thyroid artery:
as the inferior thyroid artery passes medially behind the thyroid gland, it becomes closely related to the ___ nerve
since ligature of the thyroid arteries precedes partial or total excision of the gland, this nerve stands in danger of being ___
recurrent laryngeal
accidentally severed or included in a ligature
the thyroid & parathyroid glands:
blood supply of the thyroid gland:
inferior thyroid artery:
supplies mainly the (anterior/posterior), (superior/inferior) aspect of the gland
also sends branches to the ___ glands
posterior
inferior
parathyroid
the thyroid & parathyroid glands:
blood supply of the thyroid gland:
thyroid ima artery:
presents in approximately ___ % of the population
arises from the ___ or the ___
ascends on the anterior surface of the ___ to supply the thyroid gland
possible presence of this artery must be considered when performing procedures in the ___ of the neck
2-12%
brachiocephalic trunk
arch of the aorta
trachea
midline
the thyroid & parathyroid glands:
blood supply of the thyroid gland:
thyroid veins:
superior - accompanies the ___ artery & drains into the ___ vein
middle - drains into the ___ vein
inferior - drains to the ___ veins (sometimes unite into one channel which drains into the ___ vein)
superior thyroid
internal jugular
internal jugular
brachiocephalic
left brachiocephalic
the thyroid & parathyroid glands:
blood supply of the thyroid gland:
parathyroid glands:
two pairs of small, ovoid structures on the (superficial/deep) surface of the (medial/lateral) lobes of the thyroid gland
designated ___ & ___ parathyroid glands
number & position of the glands are highly ___
blood supply is mainly from the ___ arteries
deep
lateral
superior
inferior
variable
inferior thyroid
introduction to veins of the head & neck:
facial vein:
formed at the medial angle of the ___ by the union of the ___ & ___ veins
as it crosses the mandible, it is joined by the (anterior/posterior) division of the ___ vein forming the ___ vein, which drains into the ___ vein
eye
supraorbital
supratrochlear
anterior
retromandibular
common facial
internal jugular
introduction to veins of the head & neck:
superficial temporal vein:
forms on the side of the ___ & follows the ___ artery & ___ nerve
it enters the ___ gland & joins the ___ vein to form the ___ vein
scalp
superficial temporal
auriculotemporal
parotid
maxillary
retromandibular
introduction to veins of the head & neck:
maxillary vein:
forms within the ___ fossa from the ___ plexus
infratemporal
pterygoid venous
introduction to veins of the head & neck:
retromandibular vein:
formed by the union of the ___ & ___ veins within the substance of the ___ gland
after leaving the inferior pole of the ___ gland, it divides into ___ & ___ divisions
the ___ division joins the ___ vein forming the ___ vein, which drains into the ___ vein
superficial temporal
maxillary
parotid
parotid
anterior
posterior
anterior
facial
common facial
internal jugular
introduction to veins of the head & neck:
external jugular vein:
formed behind the angle of the ___ by the union of the ___ vein & the posterior division of the ___ vein
it descends across the ___ muscle & empties into the ___ vein behind the ___
mandible
posterior auricular
retromandibular
sternocleidomastoid
subclavian
clavicle