Pulgares inteligentes

The video explores the anatomy and functionality of the human hand, highlighting its complex structure with numerous bones, nerves, and muscles. It emphasizes the significant role hands play in brain development and intelligence. The video contrasts human hands with those of chimpanzees, explaining the evolutionary adaptations that allow humans to perform complex tasks. The evolution of elongated thumbs and precise grips in humans is shown as a key factor in our advanced dexterity and intelligence, setting us apart in the animal kingdom.

How many bones are found in each human hand?

• 32

• 30

• 27

• 25

What is a key difference between chimpanzee and human thumbs?

• Chimpanzee thumbs are longer

• Chimpanzee thumbs are shorter

• Chimpanzee thumbs are the same length

• Chimpanzee thumbs are more flexible

Why do chimpanzees have shorter thumbs?

• To increase their grip strength

• To prevent interference while walking on knuckles

• To enhance their tool-making skills

• To improve their climbing ability

What evolutionary advantage did standing upright provide humans?

• Free hands for greater dexterity

• Better balance

• Increased speed

• Improved vision

How did the evolution of human hands influence brain development?

• It had no impact

• It led to a decrease in brain size

• It caused the brain to become less specialized

• It drove the evolution towards greater intelligence