Parathyroid, Trachea and Mediastinum Flashcards

1
Q

The vertebral border of the superior mediastinum

A

T1 to T4

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2
Q

Name the 3 divisions of the inferior mediastinum

A

Anterior, Middle, Posterior

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3
Q

Name the contents of the middle mediastinum

A

Pericardium, heart and roots of great vessels, phrenic nerves, bifurcation of trachea

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4
Q

Cite the contents of the posterior mediastinum

A

descending throracic aorta, esophagus, thoracic duct, azygous, hemiazygous, vagus, splanchnic, sympathetic plexus

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5
Q

What is the length of the trachea?

A

5 inches

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6
Q

What is the arterial supply of the trachea?

A

Upper 2/3 - Inferior thyroid artery

Lower 1/3 - bronchial artery

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7
Q

What is the innervation of the trachea?

A

Vagus and RLN

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8
Q

In doing a cricothyroidectomy, the tube is inserted between ___

A

cricoid and thyroid cartilage

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9
Q

In doing a tracheotomy, the opening is done ___

A
  1. Between 1st and 2nd tracheal ring

2. 2nd through 4th tracheal ring

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10
Q

[Parathyroid gland]

Which has a more constant position?

A

Superior parathyroid

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11
Q

[Parathyroid gland]

What cell produces the parathyroid hormone?

A

Chief cell

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12
Q

Oxyphil cell is located in ___

A

parathyroid gland

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13
Q

___ cells produce calcitonin

A

parafollicular (C) cell

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14
Q

__ cells produce T3/T4

A

Follicular cell

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15
Q

__ chief cell in the stomach produce

A

pepsinogen

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16
Q

____ oxyntic cell produce

A

HCl, intrinsic factor

17
Q

[Parathyroid gland]

The 3rd pharyngeal pouch gives rise to ____

A

inferior parathyroid

18
Q

[Parathyroid gland]

the 4th pharyngeal pouch gives rise to

A

superior parathyroid

19
Q

Ectopic parathyroids is frequently seen in the ____

A

superior mediastinum

20
Q

[Mediastinum: location)

the ascending aorta

A

middle mediastinum

21
Q

[Mediastinum: location)

descending aorta

A

posterior mediastinum

22
Q

[Mediastinum: location)

SVC/IVC

A

middle mediastinum

23
Q

[Mediastinum: location)

Azygous/Hemiazygous

A

posterior mediastinum

24
Q

[Mediastinum: location)

esophagus

A

posterior mediastunum

25
Q

[Mediastinum: location)

main bronchi

A

middle

26
Q

[Mediastinum: location)

recurrent laryngeal nerves

A

middle

27
Q

[Mediastinum: location)

Two pincipal bronchi

A

middle

28
Q

The C cells of the thyroid gland is from what embryonic structure

A

4th pharyngeal pouch