What is Special about a Giraffes Heart? + more videos | #aumsum #kids #science #education #children

TL;DR

Giraffe's heart pumps blood to the brain against gravity, while dandruff is caused by a yeast on the scalp.

Transcript

It's AumSum Time What is special about a giraffe's heart? It beats only when someone special is around. No. Giraffe is the world's tallest animal. Its neck is almost 6 feet long. This means a giraffe's brain is six feet above its heart. Making it difficult to pump blood to the brain against gravity. Now, The special thing about giraffe's heart is t... Read More

Key Insights

• 🥰 Giraffes have unique heart adaptations to overcome the challenge of pumping blood to their brain against gravity.
• 🤘 Curd stored in copper containers can become harmful due to the reaction between lactic acid and the metal.
• ❓ Dandruff is caused by a yeast on the scalp releasing oleic acid, triggering inflammation and excessive skin shedding.
• 🤱 The yeast Malassezia globosa is naturally present on the scalp of individuals and feeds on sebum.
• 😋 Tin-coated metal containers are used to store food to prevent reactions with acids present in the food.
• 🥺 Inflammation caused by the oleic acid released by Malassezia globosa leads to the shedding of skin cells on the scalp.

Questions & Answers

Q: Why does a giraffe's heart need to be so large and powerful?

A giraffe's heart needs to be big and strong to pump blood against gravity up their long neck to the brain, requiring high pressure and efficient oxygen delivery.

Q: How does the yeast Malassezia globosa lead to dandruff?

Malassezia globosa feeds on sebum on the scalp, releasing oleic acid that can cause skin inflammation in individuals sensitive to it, leading to dandruff.

Q: Why shouldn't curd be stored in copper containers?

Curd shouldn't be stored in copper containers as the lactic acid in it reacts with the metal, forming harmful metallic salts that make the food unsafe for consumption.

Summary & Key Takeaways

• A giraffe's heart is unique as it needs to pump blood against gravity to its brain due to the long neck.

• Giraffes have thick-walled hearts, weighing up to 25 pounds, allowing them to defy gravity and maintain blood pressure.

• Dandruff is caused by the yeast Malassezia globosa on the scalp, feeding on sebum and triggering inflammation leading to excessive skin cell shedding.