Respiratory » Main Components Of Respiratory System The Respiratory System Lesson Explorer
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FACT: At birth, there are 14 billion cells in the human brain. This number does not increase throughout a person's lifetime. After 25 years, the number of cells falls by 100,000 every day. About 70 cells die in the minute it takes you to read a page in a book. After 40 years, the decline of the brain accelerates sharply, and after 50 years neurons (that is, nerve cells) shrink and the brain gets smaller.

Main Components Of Respiratory System The Respiratory System Lesson Explorer

Your own bones are usually continuously changing – new bone is created and outdated bone is definitely broken down. If you are young, your whole body makes completely new bone speedier than the item breaks down previous bone, as well as your bone muscle size increases. A lot of people reach their particular peak bone tissue mass about age 30. After that, bone remodeling carries on, but you reduce slightly more bone mass than you gain.

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