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Strand B: Tissues, Organs, and Systems of Living Things

How fast does a heart pump blood?

How fast does a heart pump blood?

Hands-on Activities

Get active in this activity and explore the impact of exercise on your heart rate. Ready, set, GO!

How much air do I breathe in?

How much air do I breathe in?

Hands-on Activities

Learn how to measure lung capacity and about the factors that can affect our lung capacity in this hands on activity.

Snake with open mouth

How Snake Venom Kills… and Saves Lives

STEM Explained

Snake venom can be dangerous for your circulatory system, nervous system or muscular system. But it can also be very useful in medicine.

Image © exdez, iStockPhoto.com

How Can Your Doctor Use the Data in You?

STEM Explained

Scientists are training artificial intelligence to diagnose injuries using x-rays and other medical imagery of you (and millions of others). What improvements and other changes might this bring to the health care system?

Gamma ray image of the Milky Way taken by NASA’s Fermi Gamma Ray Space Telescope (NASA)

Gamma Rays: Helper or Hazard?

STEM Explained

Gamma rays might make you think of cancer, harmful radiation or superheroes. But gamma rays have lots of uses: food safety, manufacturing and even medicine!

 An artist’s interpretation of gene editing technology

Genome Editing

STEM Explained

Medical biotechnology allows scientists to make changes to the genomes of living things. What are the pros and cons of having access to techniques like these?

aging through childhood, adulthood and old age

Have Scientists Found a Way for People to Live Longer?

STEM Explained

Everything and everyone ages. But scientists have made discoveries about our cells and circulatory and immune systems that could potentially one day be used to increase human lifespans.

Lacks historical marker in Clover, Virginia

Why is Henrietta Lacks Important?

STEM Explained

When the cells of Henrietta Lacks were collected by medical researchers after her death in 1951, it changed the future of medicine.

Woman having a panic attack

Chemical Equilibrium and Panic Attacks

STEM Explained

Panic attacks are scary and they upset your body’s chemical equilibrium. Learn what happens to acids & bases in your circulatory system during a panic attack.

Hand with screwdriver “repairing” DNA

DNA Damage and Repair

Backgrounders

This backgrounder explains the different ways that cells repair damage to DNA.

Cocoa beans and cocoa powder

Can Chocolate Make Your Brain Work Better?

STEM Explained

Researchers have found that consuming foods rich in flavanols is linked to more efficient blood flow, which can improve brain function.

T cells and cancer cells - Image © Meletios Verras, iStockPhoto.com

Can Your Own Cells Cure Cancer?

STEM Explained

When a person has cancer, CAR-T Therapy uses their own cells to destroy the cancer cells in their body.

Image © TLFurrer, iStockPhoto.com

Are Microbes Your Friend or Foe?

STEM Explained

Microbes are everywhere, even in your digestive tract. Some of these microbes are helpful, and some aren’t.

heavy metal band

A Taste of Heavy Metal

STEM Explained

Heavy metal is a term for some toxic chemical elements. They can cause problems like bioaccumulation, but are useful in nuclear medicine and medical imaging.

Test tubes in a laboratory

DNA Extraction

Backgrounders

Learn the basics of how DNA can be extracted from cells.