What do white blood cells do?

What do red blood cells do?

The most vital organ in the circulatory system is the

What is the circulatory system made up of?

The respiratory system allows you to

What is the main organ of the respiratory system?

What are the tubes called that branch of the trachea?

______________ is the waste product of cell functions.

Tiny air sacs in the lungs where the exchange of carbon dioxide for oxygen takes place are called

Oxygen rich blood is carried from the lungs to the ________.

The three parts of the skeletal system are

The adult body has _______ bones.

The skeleton gives your body __________ and protects your __________.

What is the purpose of cartilage?

Connects bones to other bones

Where are blood cells produced?

Skeletal muscles work in pairs to ________ and __________ joints.

What are the two different types of muscles?

Muscles are attached directly to the bones by connective tissue called ____________.

Where in the body would you find smooth muscles?

Cardiac muscles are found in the walls of the ______________.

Smooth muscles and cardiac muscles are called

The two systems that make up the nervous system are

The central nervous system is made up of the

The peripheral nervous system is made up of __________ organs, such as ears, eyes, and touch sensors on the skin.

Sensory receptors send messages to your

An automatic response to stimuli is called

The main purpose of the excretory system is to

The three main organs of the excretory system are

Which system turns the food into nutrients that the body needs for energy, growth, and repair?

The main organs of the digestive system are