PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Shrews (tiny rat)
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Humans
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Monkeys
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Ostrich fire chickens
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Detailed explanation-1: -Among mammals, the smallest brain is found in the bat, Tylonycteris pachypus, which weighs 74 mg in the adult animal, and the largest brains of all animals are found in the sperm whale (Physeter macrocephalus) and ‘killer whale’ (Orcinus orca), with up to 10 kg.
Detailed explanation-2: -Fun Facts. The sperm whale has the biggest brain of any animal species, weighing up to 20 pounds (7 to 9 kilograms).
Detailed explanation-3: -Scientists have finally located the smallest brain ever seen and it belongs to a ragworm. This cousin of the humble earthworm has neurons very similar to those in the human brain despite being only the width of a human hair.
Detailed explanation-4: -The human brain weighs about three pounds and has a volume of about 1, 300 cubic centimeters, about the size of ten tennis balls. Humans have some of the largest brains compared to other animals. This is especially true if you consider the size of the brain relative to the size of the body.