Mention the location and functions of the following:
i. Eustachian tube
ii. Centromere
iii.chordae tendinae

Dear student,
Please find below the answer:

i. Eustachian tube: It is present in the ​​​​​middle ear. It is an auditory tube. ​​​​The eustachian tube is a channel of communication between the nasopharynx and the middle ear.

ii. Centromere: It is the condensed region on the chromosome. Spindle fibres attach here during the process of cell division.

iii. Chordae tendinae: These are the bands of fibrous tissue (tendons) present in the heart that are attached on one end to tricuspid and bicuspid valves of the heart and on the other end to the papillary muscles. These help to anchor the valves and prevent their movement back into the atria during the contraction of ventricles.

​​​​​Hope this clears your doubt.
Regards.