Thyroid And Parathyroid Gland Flashcards
Thyroid gland is located where
In the midline of the ant part of the neck
Extends from C5 to T1
Where does the thyroid gland crosses the midline of the upper part of the trachea
At the 2nd and 3rd tracheal rings
Thyroid gland lies post to what muscles
Sternothyroid
Sternohyoid
Thyroid gland surrounds what
Cricoid cartilage and tracheal rings
Thyroid gland lies inf to
Thyroid cartilage
Thyroid gland is attached to trachea by
Lat suspensory ligament or Berry’s ligament
Thyroid gland is divided into two lobes and connected by what inferomedially
Isthmus
Location of isthmus of thyroid gland
Above 2nd or 3rd tracheal cartilage
The extra pyramidal lobe of the thyroid gland arises from what lobe
Left lobe
Levator glandular thyroidae connects the pyramidal lobe to
Hyoid bone
The levator glandular thyroidae is what
A connective tissue band
Arterial supply of thyroid gland
Superior thyroid artery
Inferior thyroid artery
The thyroid I’ma artery is present in
Small percentage of people
Thyroid I’ma artery supplies
Isthmus
Ant thyroid gland
Thyroid I’ma artery arises from
Bracgiocephalic trunk most of the time
Thyroid I’ma artery can also arise from
Aortic arch
ECA
Subclavian
Thyrocervical trunk
ITA
Venous drainage of thyroid gland
Sup, Mid, Inf thyroid vein
Sup and mid thyroid vein drain into
IJV
INF thyroid vein drains into
Subclavian or brachiocephalic vein
Lymphatic drainage of thyroid gland
Prelaryngeal cervical
Pretracheal
Paratracheal
Innervation of thyroid gland
Inf, mid and sup ganglia of sympathetic trunk
Left and right recurrent laryngeal nerves
Sup laryngeal nerve
Sup laryngeal nerve is located where
At sup pole of thyroid gland
Lt and rt recurrent laryngeal nerves are located
Lat part of thyroid gland close to inf thyroid artery
Damage to recurrent laryngeal nerve can result to
Vocal cord paralysis
Damage to cervical sympathetic trunk can result in
Horner syndrome
Damage to sup laryngeal nerve can result in
Dysphonia
Thyroidectomy
Surgical removal of all or part of thyroid gland
Common site of ectopic thyroid gland
Base of tongue
Goitre
Excessive enlargement of thyroid gland
Location of parathyroid glands
Post aspect of thyroid glands
How many parathyroid glands are there
4
The 2 sup parathyroid glands are located where
Middle of post border of each thyroid lobe
The two inf parathyroid glands are located where
Close to INF poles of thyroid glands
Venous drainage of parathyroid gland
Inf, Mid, Sup thyroid veins
Arterial supply of parathyroid gland
Inferior thyroid artery
Collateral supply from Sup thyroid artery and thyroid ima artery
Innervation of PTG
Thyroid branches of cervical ganglia
Lymphatic drainage of PTG
Pretracheal
Deep cervical
