thymus

Question 1

thymus situation

Answer 1

situated in anterior and superior mediastinum, it is develop till puberty then undergoes gradual atrophy ..

Question 2

thymus structure weight

Answer 2

*bilobed structure
made up of pyramidal lobes of unequal size
* 10-15g at birth
30-40 g at puberty
10 g in mid adult after puberty it becomes inconspicuous due
to fat

Question 3

blood supply of thymus

Answer 3

by internal thoracic and inferior thyroid arteries
drains in inferior thyroid vein , left brachicephalic internal thoracic

Question 4

nerve supply of thymus

Answer 4

capsule supplied bt phrenic nerve

Question 5

function of thymus

Answer 5

lymphopiesis
95 % lymphocytes are auto allergic short lived for 3-5days
remnants are hassallś corpuscules
5% long lived lived

Question 6

medullary epithelial cells

Answer 6

a … lymphoietin
b… competence inducing factor

Question 7

clinical anatomy of thymus

Answer 7

thymine hyperplasia
thymine tumor make pressure on trachea and oesophagus and large veins