Proof of evolution In Humans

What is true about the palmaris longus muscle in humans?

• It is present in all humans and essential for grip strength.

• Its absence significantly weakens grip and pinch strength.

• It is missing in about 10-15% of people but its absence does not affect grip strength.

• It is primarily used for cosmetic surgeries and has no other function.

What did a study on human ear muscles reveal about their response to sound?

• Humans can consciously move their ears to locate sounds, similar to other mammals.

• The ear muscles show no activity in response to sudden sounds.

• There is a detectable, subconscious activity in ear muscles, attempting to pivot towards the sound source.

• The ear muscles only react to sounds from the right side.

What is the primary function of goosebumps in furry mammals?

• To help them appear larger when threatened.

• To increase the amount of space for insulation, helping them stay warm.

• To signal distress to other animals.

• To improve their sense of touch.

What happens to the tail structure in human embryos during development?

• It develops into a proper tail, similar to many other animals.

• The cells in the tail are programmed to die, leaving behind the coccyx.

• It remains as a fully functional tail until birth.

• It is reabsorbed and serves no purpose in the adult human.

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