Circulatory System
Digestive System
Respiratory System
Nervous System
Musculoskeletal System
100

This organ pumps blood throughout the body.

What is the heart?

100

This organ is the main site of nutrient absorption.


What is the small intestine?

100

The primary organ responsible for breathing.

What are the lungs?

100

This organ controls thought, memory, and movement.

What is the brain?

100

This type of tissue connects muscles to bones.

What are tendons?

200

These vessels carry blood away from the heart.

What are arteries?

200

This organ produces bile, which helps break down fats.

What is the liver?

200

This tube carries air to the lungs.

What is the trachea?

200

These cells transmit electrical signals throughout the body.

What are neurons?

200

This system gives the body structure and protects internal organs

What is the skeletal system?

300

These vessels allow the exchange of nutrients and gases between blood and tissues.

What are capillaries?

300

his muscular organ stores food and mixes it with digestive juices.

What is the stomach?

300

Tiny air sacs in the lungs where gas exchange occurs.

What are alveoli?

300

This part of the nervous system connects the brain and spinal cord to the rest of the body.

What is the peripheral nervous system?

300

Muscles that you control voluntarily are called this.

What are skeletal muscles?

400

This component of blood carries oxygen from the lungs to the body’s cells.

What are red blood cells?

400

These finger-like projections increase surface area in the small intestine.

What are villi?

400

The muscle that helps expand and contract the lungs.

What is the diaphragm?

400

The nerve that controls voluntary muscle movement.

What is the motor nerve?

400

These bones protect the brain.

What is the skull?

500

The circulatory system works closely with this organ to oxygenate blood.

What are the lungs?

500

This organ removes water from undigested food and forms solid waste.

What is the large intestine (or colon)?

500

This system works with the respiratory system to deliver oxygen to cells.

What is the circulatory system?

500

This system works with the endocrine system to regulate body functions.

What is the nervous system?

500

The joints that allow a wide range of motion, like the shoulder, are called this.

What are ball-and-socket joints?

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