Question

The key anatomical distinctions between humans and apes regarding the ability to speak are:

a. the position of the larynx and the epiglottis
b. the configuation of the palate
c. the position of the tongue
d. the size and location of the nasal cavity

Answer 1

Human speech capabilities are attributed to anatomical features such as a descended larynx, a large and agile tongue, and a supportive hyoid bone, with these traits evolving around 500,000 years ago.

Step-by-step explanation:

The anatomical distinctions between humans and apes that are crucial for the ability to speak involve various aspects of the vocal tract. A key difference is the position of the larynx, which in humans is lower compared to that in apes. This allows humans to produce a wider range of sounds, contributing to the complexity of spoken language. Additionally, humans possess a large, rounded tongue that is agile enough to articulate a rich variety of sounds, further enhancing speech abilities. The hyoid bone in humans supports the tongue and larynx, playing a significant role in speech production. Evidence suggests that such developments in the vocal tract likely occurred around 500,000 years ago.