Station2: The Thyroid and Parathyroid Glands Flashcards

1
Q

The thyroid gland is located between the

A

Vertebral level of C5 to T1 and between the cricoid cartilage and 6th tracheal ring

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2
Q

The isthmus lies opposite the

A

2nd to 3rd tracheal rings

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3
Q

What are the 3 strap muscles that overlie the thyroid gland

A

Sternothyroid
Sternohyoid
Omohyoid

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4
Q

Name the 2 nerves that supply the muscles of the vocal cords and describe their location in relation to the thyroid

A

Recurrent laryngeal- runs between the trachea and oesophagus

Superior laryngeal- lateral to pharynx

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5
Q

From which major artery in the neck does the superior thyroid artery rise

A

Common Carotid

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6
Q

From which artery does the inferior thyroid artery arise

A

Subclavian artery

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7
Q

Into which vein does the superior thyroid vein drain

A

Internal jugular vein

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8
Q

Into which vein does the middle thyroid vein drain

A

Internal jugular vein

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9
Q

Into which vein does the inferior thyroid vein drain

A

Brachiocephalic vein

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10
Q

What type of cell do you see lining the follicle

A

Simple cuboidal epithelium

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11
Q

What colour do colloid stain

A

Pink

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12
Q

What hormones does the thyroid secrete

A

Thyroxine (T4), Triiodothyronine (T3)

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13
Q

What is the arterial supply of the parathyroid glands

A

Inferior thyroid arteries

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14
Q

What is the venous drainage of the parathyroid gland

A

Internal jugular vein

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15
Q

What cells are seen in the histology of parathyroid gland

A

Chief cells

Oxyphil

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16
Q

What hormone is secreted by the parathyroid gland and what is the action of this hormone

A

PTH

Acts on osteoclasts and epithelial cells of the renal tube and gut to increase calcium plasma

17
Q

What cells does this PTH act upon and what is their subsequent action

A

Acts on osteoclasts and epithelial cells of the renal tube and gut to increase calcium plasma