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part in blood supplying of bronchopulmonary complex



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Korenkov Topographic Anatomy (1)


part in blood supplying of bronchopulmonary complex, 
trachea, esophagus, pericardium, wall of aorta, superior vena 
cava, nn. vagi, lymph nodes and cellular tissue of mediastinum. 
From 2 to 6 bronchial arteries (rr. bronchiales) depart from 
the anterior semicircular part of aorta, in the point of 
transition of its arch arc into descending part. They form a lot 
of anastomoses with arteries of greater circulation (rr. of 
a. thoracica interna) and lesser circulation (a. pulmonales). 
The veins of mediastinum don’t have the valves, their walls 
are thin. Their damage during the operation results in air 
embolism. 
Organs of mediastinum superius
 
(Fig. A.10) 
 


35 
THYMUS 
The
 
thymus is located behind the sternum. In children it 
descends till the level of 5th costal cartilage. M. 
sternohyoideus, m. sternothyreoideus and sternum are 
located in front of the thymus. At the sides it borders on 
mediastinal pleura.
From behind it borders on the left v. brachiocephalica, 
superior vena cava, arch of aorta, and pericardium.
The thymus is supplied with blood due to rr. thymici from a. 
thoracica interna, and rr. of a. thyroidea inferior. 
The venous blood drains to the left v. brachiocephalica and v. 
thyroidea inferior. The lymph drains to mediastinal lymph nodes. 
The gland is innervated by rr. of nn. vagi, n. phrenicus and 
truncus sympathicus. The growths which are formed from the 
rests of the thymus (thymomas), while overgrowing cause a 
compression of mediastinal organs which results in mediastinal 
syndrome. The symptoms of syndrome are: precordialgia, 
dyspnoea, cyanosis, heart disorders. Thus, the growths should be 
ablated. 
There are left and right brachiocephalic veins behind the 
thymus in cellular tissue of mediastinum superius. They are 
formed behind the corresponding sternoclavicular joint by 
means of junction of subclavian and jugular internal veins. 


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