Trachea, Bronchus And Esophagus

Question 1

Length

Answer 1

10 to 12 cm

Question 2

Trachea Beginning

Answer 2

In neck at C6 as larynx continuation

Question 3

Trachea Parts

Answer 3

Cervical & thoracic

Question 4

Trachea In which mediastinum it passes

Answer 4

Sup

Question 5

Trachea end

Answer 5

At sternal angle, dividing into 2 main bronchi

Question 6

Trachea kept patent by

Answer 6

By 16-20 C-shaped cartilaginous rings

Question 7

Trachea site at constrictions

Answer 7

Thyroid, brachiocephalic aa & aortic arch

Question 8

Trachea Ant relations

Answer 8

Manubrium & Lt. brachiocephalic vein

Question 9

Trachea Post relations

Answer 9

Esophagus & Lt. recurrent laryngeal nn

Question 10

Trachea Rt. relations

Answer 10

Brachiocephalic aa & Rt. brachiocephalic vein

Question 11

Trachea Lt. relations

Answer 11

Aortic arch & Lt. CC

Question 12

Trachea Bifurcation

Answer 12

Deep cardiac plexus & tracheobronchial LN’s

Question 13

Trachea Blood supply

Answer 13

Arterial; 1 Rt. bronchial a. (Rt. 3rd post. intercostal) & 2 Lt. bronchial aa. (descending aorta).
*Venous; 2 Rt. bronchial vv. (azygos) & 2 Lt. bronchial vv. (sup. hemiazygos)

Question 14

Trachea Lymph drainage

Answer 14

Tracheobronchial & paratracheal nodes

Question 15

Trachea N. supply

Answer 15

Pulmonary plexus (T2,3,4 ganglia & vagus)

Question 16

Bronchi Beginning

Answer 16

At sternal angle, from trachea lower end

Question 17

Bronchi End

Answer 17

In lung hilum, dividing into lobar bronchi (3 for Rt. & 2 for Lt. lungs)

Question 18

Bronchi Charaters

Answer 18

Rt. bronchus; shorter, wider & more in line with trachea (25).
*Lt. bronchus; longer, narrower & more horizontal (45)

Question 19

Bronchi Blood supply

Answer 19

Rt. bronchus; Arterial; 1 Rt. bronchial a. (Rt. 3rd post. intercostal).
Venous; 2 Rt. bronchial vv. (azygos).
*Lt. bronchus; Arterial; 2 Lt. bronchial a. (descending aorta).
Venous; 2 Lt. bronchial vv. (sup. hemiazygos)

Question 20

Bronchi Lymph drainage

Answer 20

Bronchopulmonary & inf. tracheobronchial node

Question 21

Bronchi N. supply

Answer 21

Pulmonary plexus (T2,3,4 ganglia & vagus)

Question 22

Esophagus Length

Answer 22

25 cm

Question 23

Esophagus Beginning

Answer 23

In neck at C6 as pharynx continuation

Question 24

Esophagus Parts

Answer 24

Cervical, thoracic & abdominal

Question 25

Esophagus mediastinum it passes

Answer 25

Sup & post

Question 26

Esophagus Cardiac chamber infront of it

Answer 26

Lt. atrium, separated from it by oblique sinus

Question 27

Esophagus Relation to descending aorta

Answer 27

Esophagus crosses infront of it at T7 from Rt. to Lt.

Question 28

Esophagus End

Answer 28

Joins stomach at T11, after passing via diaphragm esophageal opening

Question 29

Esophagus Sites of constrictions

Answer 29

At beginning (7 inches from incisors), crossed by aortic arch (9 inches), crossed by Lt. bronchus (11 inches) & at esophageal opening (17 inches)

Question 30

Esophagus Blood supply

Answer 30

Arterial; Descending aorta & bronchial aa
Venous; Azygos & hemiazygos vv

Question 31

Esophagus Lymph drainage

Answer 31

Brachiocephalic, tracheobronchial & post. mediastinal node

Question 32

Esophagus nerve supply

Answer 32

Lymph drainage: Brachiocephalic, tracheobronchial & post. mediastinal node