The burning heart

Hearts

From the moment it begins beating until the moment it stops, the human heart works tirelessly. In an average lifetime, the heart beats more than two and a half billion times, without ever pausing to rest. Like a pumping machine, the heart provides the power needed for life.

This life-sustaining power has, throughout time, caused an air of mystery to surround the heart. Modern technology has removed much of the mystery, but there is still an air of fascination and curiosity.

Explore the heart. Discover the complexities of its development and structure. Follow the blood through the blood vessels. Wander through the weblike body systems. Learn how to have a healthy heart and how to monitor your heart’s health. Look back at the history of heart science.

Soon, your fascination and curiosity may lead to understanding and respect.

Human Body

Saliva-dijestive juices

teeth-cut,tear,mash

esophogus-muscle squeezes food down to stomach

stomach-acid and churning

small intestines-nutrients sucked out of food

large intestine- poop express, water bacteria go to work

rectum-storage place for feces

anus- muscle for poop to pass.

Cells in general

1- All living things are composed of one or more cells.

2- Cells are the basic unit of structure and functions in all living things.

3- All cells come from previously existing cells.

4- The activity of an entire organism depends on the total activity of it’s independent cells.

Animal Cells

Cell membrane- It is skin for the cell.
Cytoplasm- Mostly water, “jelly”, distributes food and oxygen. (blood)

Nucleus- brain- controls all cell activity.
Vacuole-storage center for access food of waste. Fat
Endoplasmic Reticulum- Transport canals,blood cells.
Mitochondria- energy producer.
*cell wall- gives plant shape and protection.
*Chloroplasts- capture NRG from the sun to produce NRG for the cell (photosynthisys)