Circulatory and Respiratory Systems
Skeleton, Muscles, and Skin
The Nervous System
The Digestive System
The History of Planet Earth
100

the system that pumps blood throughout your body

circulatory system

100

The bones in the human body that interact to move, protect the body, and give it shape

Skeletal system

100

takes in information through our senses, processes the information and triggers reactions

The Nervous System

100

The organ where most of digestion occurs.

small intestine

100

Strata

 Layers of rock

200

The main respiratory organ that takes in and releases air.

Lungs

200

An organ that contracts and relaxes to make bones move.

Muscle

200

sensory organ

An organ that collects information about the body’s surroundings, such as eyes, ears, nose, skin, and tongue.

200

A body part that helps break down food into nutrients.

Stomach

200

igneous rock

formed through the cooling and solidification of molten rock

300

blood vessels that carry blood away from the heart.

Artery

300

The organ that surrounds and protects the body.

Skin

300

Respond

To react to a change or action.

300

Liver

An organ that breaks down fats and helps with digestion

300

sedimentary rocks

formed when particles of sand, shells, pebbles, and other fragments are pressed and cemented together in layers over millions of years

400

groups of cells of the same kind that have a specific function

Tissue

400

a strong, flexible connective tissue that protects your joints and bones.

Cartilage

400

Nerve

 a bunch of wires in the body that send signals to and from the brain

400

Pancreas

The organ that manages sugar in the body.

400

metamorphic rocks

rocks formed from other types of existing rock due to changes in heat or pressure

500

 a tube-like structure in the neck and upper chest

Trachea

500

rope like tissue that pull on bones

Tendon

500

controls balance and coordination

Cerebellum

500

 The organ that takes in water from food and helps get rid of waste.

large intestine

500

K-T boundary

 a thin, distinct layer of rock dating back approximately 66 million years. It marks the quick end of the Mesozoic Era (the age of the dinosaurs) and the beginning of the Cenozoic Era.

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