The Human Body: Secrets of Your Life Revealed — S01E01 — Grow

00:00:08 Every day, you take 23,000 breaths.

00:03:03 And again, big push.

00:05:09 But it's expensive for a mother to make,

00:07:20 he tried bacterium after bacterium after bacterium.

00:09:27 holes can develop in the gut wall,

00:11:54 It may even affect our moods, causing depression.

00:14:42 Eva is eight years old, and throughout her childhood,

00:17:12 but a recent study found no single gene was responsible.

00:19:34 While we're in the kitchen, he finds it on the counter.

00:22:10 He obviously is an amazing drummer at such a young age,

00:24:53 Shape-shifting cells called microglia are the brain's

00:27:13 I fall over a lot.

00:29:10 and what triggers it has been a mystery.

00:31:45 And I moved on from, like, a little girl.

00:34:35 Located at the end of the intestinal villi,

00:37:04 ..and biologically speaking, love is all about chemical reactions.

00:39:41 In April 2016, scientists at Northwestern University, Chicago,

00:42:17 Only a tiny number of tissues, such as the lens of the eye,

00:45:11 Our skin is the largest organ, and it constantly grows.

00:48:13 Our body constantly regenerates our blood...

00:50:51 turning us from a single cell into a complex mass of tens of trillions,

00:53:13 So, where blood would normally flow through the muscle,

00:55:26 If you think of the foetal heart as it develops, very early on,

00:57:41 redefining human growth.