We can\'t hear certain frequencies of sound because _________________. A. those

Question

We can't hear certain frequencies of sound because _________________.

A. those frequencies do not vibrate the basilar membrane in areas with a spiral organ

B. the waves do not vibrate the tympanic membrane enough C. those frequencies are not strong enough to vibrate the auditory ossicles

D. the semicircular ducts have a very limited frequency-reception range

E. the hair cells of the vestibule are too stiff for excessively high and low frequencies

Daylight striking the retina causes rods to signal an action potential in the optic nerve.

The macula sacculi is nearly horizontal and the macula utriculi is nearly vertical.

Explanation / Answer

Ans 1. The human ear can hear frequencies 20-20000 Hz of sound.

The frequencies lower than this cannot effectively vibrate the tympanic membrane (ear drum).

Whereas the frequencies higher than this reach the internal ear but are removed instantaneously to avoid rupture or adverse effect to the internal ear.

Since, reason about not hearing lower frequencies is given. The answer is option 'b'.

Ans 2. Rodes present in the retina function in dim light. Day light function is done by cones.

So, the answer is FALSE.

Ans 3. The macula sacculi present in the ear is in vertical position as it has to be detect vertical acceleration and the macula utriculi is present in horizontal position as it has to detect horizontal acceleration.

They both are involved in vestibular function i.e maintain balance by detecting acceleration.

So, the answer is FALSE.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.