At Low Frequencies (E

question 208

Multiple Choice

At low frequencies (e.g., below 50 hertz) , the entire basilar membrane deforms almost equally, posing a problem for the place theory of pitch. What other mechanism accounts for our ability to sense these low-frequency sounds?

• A) the frequency of neural impulse firing
• B) the dilation of the inner ear
• C) the activation of the semicircular canals
• D) all of the above

---

Definitions:

Physical Differences

The variations in bodily characteristics among individuals or groups, including aspects like height, skin color, facial features, and genetic traits.

Ancient Skeletons

The remains of humans from past civilizations or epochs, which archaeologists and anthropologists study to understand human evolution, lifestyle, and history.

Primates

An order of mammals that includes humans, apes, monkeys, and prosimians, characterized by opposable thumbs, high intelligence, and complex behaviors.

Arboreal Primate

A category of primates adapted to living in trees, characterized by features such as grasping hands and feet for climbing.