Natural Science 4th Grade

The _______ are the blood vessels that take the blood to the heart.

Complete the female reproductive system: Ovaries, ________, vulva, ______,_____, ova

TRUE or FALSE. The circulatory system contains the heart, blood vessels, and blood.

_________ is when a sperm joins an ovum.

He/She is the doctor who operates on patients, who is it?

An adult male's lungs can expand to hold ______ of air.

thanksgiving conversation

thanksgiving conversation

TRUE or FALSE. Gas exchange sometimes occurs in capillaries.

Before the bay is born, it is called a ________.

Explain the route of carbon dioxide in the body.

It transports air from the mouth into the bronchi.

When your lungs get much bigger, so your diaphragm moves down, and your rib cage moves up and out. This makes space inside your chest. What is this process called?

It helps contract and expand the lungs.

TRUE or FALSE. The circulatory system transports carbon dioxide to all cells in the body.

Choose which words do not belong to the group: blood, nose and mouth, trachea, lungs, ovum, alveoli, vulva, tissue cells

Complete the parts of male Reproductive system: _______, _______, scotum, sperm, ______

TRUE or FALSE. The heart has four chambers.

TRUE OR FALSE: Blood from the lungs to the heart goes into the left atrium and contains oxygen.

TRUE or FALSE. Veins only carry blood with carbon dioxide.

Explain the route of oxygen in the body.

They are the small air scs in the lungs.

An _______ is when the cels grow after fertilisation.