It receives blood from the veins and pumps it to the right ventricle.

These are veins that transfer oxygenated blood from the lungs to the heart.

__________ occurs when the heart muscle relaxes.

The following activities can enhance your cardiovascular endurance except __________.

Which of the following is NOT a function of digestive system?

What comes next?

Mouth > Esophagus > Stomach > __________

This is the first part of the digestive system. It contains stratified squamous epithelium.

Food is pushed through your __________ and into your stomach with a series of muscle contractions.​

__________ is important because your body needs nutrients from food and drink to work properly​.

__________ are mainly sugars and starches that the body breaks down into glucose.

These are made up of hundreds or thousands of smaller units called amino acids.

These are the carbohydrates, fats, proteins, and water.​

These are the minerals and vitamins.​

During __________, the diaphragm contracts and the rib cage rises up.

This is also called as the voice box.

The diaphragm is located __________ the lungs.

The nose is divided into two halves by the nasal __________.

This is also called as the windpipe.