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为什么蜜蜂蜇人后会死去?

Why do Bees Die when they Sting us? | #aumsum

It’s AumSum Time.
现在是AumSum时间
Why do bees die when they sting us?
为什么蜜蜂蜇人后会死掉
I don’t know.
我不知道呀
But it sounds super sad.
但这听起来太悲伤了
Yes.
是的
Honeybees are the only bees that die after stinging.
只有蜜蜂才会在蜇人后死去
But if they die, why do they sting?
但既然会死 它们为什么还要蜇人呢
Bees only sting when they feel we are a threat
只有当蜂王或蜂巢受到威胁时
to their queen or their hive
蜜蜂才会蜇人
Now, the stinger of a honeybee is barbed.
蜜蜂的刺是倒钩形的
After stinging, it can easily come out,
如果蜜蜂蜇人或动物时
if the skin is thin.
如果被蜇物皮肤很薄 刺很容易拔出
But since human skin is thick,
但由于人体皮肤很厚
the barbed stinger gets stuck.
倒钩刺会卡在皮肤里
Hence, when the bee tries to pull herself,
所以 当蜜蜂拔刺时
she ends up tearing the abdomen.
会撕裂它的腹部
Leaving behind her venom sac, parts of the digestive tract, etc. and thus, killing herself.
留下其毒囊 部分消化道等 导致死亡
Now, although the bee is dead, we should make sure that we remove the sting.
尽管蜜蜂已经死了 我们也必须将毒刺取出
Why?
为什么呀
Because in spite of being detached from the bee.
因为尽管毒囊已经从蜜蜂身上分离
The venom sac continues to pump venom, thus increasing the pain.
但它仍会继续供应毒液 从而使我们更疼
How do scars form?
伤疤是怎么形成的
It is a secret process.
这是个秘密喲
I cannot reveal it.
我不能说
No.

It’s not a secret process.
这不是什么秘密
A scar is formed when our skin tissue heals itself after an injury.
我们的皮肤组织愈合伤口时会产生伤疤
Our skin tissue has collagen.
皮肤含有胶原质
Collagen is a structural protein produced by fibroblasts.
胶原质是由原纤维细胞生成的结构蛋白质
Collagen keeps our skin firm
胶原质让我们的皮肤坚韧
and it is usually arranged in a basket weave pattern.
通常以编织篮形式排列
Can I use this basket to keep my bags of chips?
我可以用这个篮子装袋装薯片吗
Please listen.
唉 请认真听讲
When we get injured, our skin tissue gets damaged.
我们受伤时 皮肤组织会损坏
So, in order to heal and close the wound,
所以 为了愈合伤口
fibroblasts produce more collagen.
原纤维细胞会生成更多的胶原质
But, instead of arranging in a basket weave pattern.
但现在不以编制篮形式排列
The collagen cross links and aligns in a single direction.
这些胶原质从单一方向进行连接
As a result.
结果
The injured area of the skin appears different from normal skin,
受伤区域的皮肤就和周围的皮肤不一样了
thus causing a scar.
这样就产生了伤疤
Why do our muscles get sore?
为什么我们的肌肉会酸痛
Because they want to go to a spa.
因为它们想洗Spa呢
No.
不对
When we begin to go to gym
我们开始健身
or performing new intense physical workout
或者做更高强度的运动之后
Our muscles begin to feel sore the next morning.
第二天早上 我们的肌肉就会酸痛
This soreness is called Delayed Onset Muscle Soreness or DOMS.
这叫延迟性肌肉酸痛
DOMS occurs usually after eccentric contractions.
延迟性肌肉酸痛通常发生在离心收缩后
What does that even mean?
离心收缩又是什么呢
When a muscle is lengthening and contracting at the same time.
肌肉的伸长和收缩同时发生的过程
It is known as an eccentric contraction.
就叫离心收缩
For example, when we lower a dumbbell.
比如说 当我们放下哑铃时
Our biceps muscle is slowly relaxing and lengthening.
我们的肱二头肌在渐渐地放松并伸长
But at the same time, it is still contracting to hold the heavy weight of the dumbbell.
但同时它也在收缩 以握住哑铃的重量
Similarly, in a squat, as we lower ourselves, our quadriceps muscle is lengthening.
同样 我们下蹲时 四头肌也在伸长
But at the same time, it is still contracting to hold our upper body weight.
但同时它也在收缩 以支撑上身重量
Such eccentric contractions generate tension in the muscles.
这样的离心收缩使肌肉之间产生张力
Creating minute tears in them, thus, causing the soreness or pain.
撕开一些微小的裂痕使我们感到酸痛
Can animals get a sunburn?
动物会被晒伤吗?
Yes.
会的
Due to ultraviolet radiation of the sun, animals can also get sunburns.
动物也会被太阳光的紫外线辐射晒伤
However, to protect themselves from the harmful radiation.
不过 为了保护自己免遭有害辐射
Different animals have different biological defenses.
动物们有各自的生物防御系统
For example, reptiles have scales, birds have feathers.
例如 爬行动物有鳞片 鸟有羽毛
Animals like sheep, dogs and cats have fur or hair.
绵羊 狗和猫等动物有皮毛或毛发
Sperm whales have a special protein,
巨头鲸含有一种特殊的蛋白质
fin whales have more melanin, etc.
鳍鲸含有很多黑色素 等等
Does anybody have Captain America’s shield?
你们有美国队长的盾牌吗?
Please listen.
唉 请认真听讲吧
Some animals even produce certain substances
有些动物甚至会产生某种物质
to protect themselves from the harmful radiation.
来抵挡有害辐射 保护自己
For example, hippopotamuses secrete a fluid
例如 河马会分泌一种
made up of red and orange pigments.
由红色和橙色混合而成的液体
Some fish, amphibians, reptiles and birds
一些鱼类 两栖动物 爬行动物和鸟类
produce a chemical called gadusol.
会产生一种叫gadusol的化合物
In addition to this, animals like rhinoceroses, elephants and pigs take mud baths.
除此之外 河马 大象和猪会洗泥巴浴
It is said that mud acts like a physical barrier
据说泥巴就相当于动物皮肤
between their skin and ultraviolet radiation.
和紫外线辐射之间的一道物理屏障
Thus preventing them from getting sunburns.
这样可以避免被晒伤

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视频概述

为什么蜜蜂蜇人后会死?为什么肌肉会酸痛?动物也会被晒伤吗?本视频介绍了一些百科小知识,好奇的你快戳它吧!

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视频来源

https://www.youtube.com/watch?v=jlXtEslyKxk

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