Correct Answer - D
Ans- Ans. is 'd' i.e., Right recurrent laryngeal nerve [Ref-
BDC 6h/e Vol.l p. 192]
Thoracic inlet (superior aperture)
The narrow upper end of the thorax, which is continuous with
the neck is called the inlet of the thorax'
The structure passing through the inlet are : -l. Vkcera:-
Trachea, esophagus, apex of lung with pleura, remains of the
thymus, thoracic duct.

Correct Answer - A
Ans. is 'a' i.e., Middle ear
Contents of middle ear
Contents of middle ear (tympanic cavity) are :?
1. Ear ossicles Malleus, incus, stapes
2. Muscles →Tensor tympani, stapedius
3. Chorda tympani
4. Tympanic plexus