Cochlea

Q.

Match the following parts of the ear with functions

$\begin{array}{cc}ColumnI& ColumnII\\ i.\text{Pinna}& a.\text{Collects vibrations in the air}\\ ii.\text{Cochlea}& b.\text{Region between pinna and eardrum}\\ iii.\text{Meatus}& c.\text{Transfers vibrations to ear ossicles}\\ iv.\text{Tympanic membrane}& d.\text{Translates sound to nerve impulses}\\ v.\text{Eustachian tube}& e.\text{Equalises pressure between the inner and outer ear}\end{array}$

1. i $\to$ a, ii $\to$ d, iii $\to$ b, iv $\to$ c, v $\to$ e

2. i $\to$ e, ii $\to$ c, iii $\to$ b, iv $\to$ a, v $\to$ d

3. i $\to$ d, ii $\to$ e, iii $\to$ a, iv $\to$ b, v $\to$ b

4. i $\to$ c, ii $\to$ a, iii $\to$ e, iv $\to$ c, v $\to$ d

Q.

Helicotrema is located

1. in the middle of cochlea

2. in the tip of cochlea

3. at the start of cochlea

4. near fenestra ovalis