Unidad 2 Natural science

What does the respiratory system do?

Allow us to breathe

What do we do when we breath?

We take in oxygen from the air and release carbon dioxide

What parts form the respiratory system?

The airways and the lungs

What parts form the airways?

The nose,the nostrils,the pharynx,the larynx,the vocal cords,the trachea,the bronchi and the bronchioles

What parts form the lungs?

The lungs,the rib cage,some bronchioles and the alveoli

What is the ribcage made up of?

The ribs,the sternum and the backbone

Which are the 2 respiratory movements?

Inhalation and exhalation

Inhalation is

breathing in

Exhalation is

breathing out

What happens when you breath in?

You take air inside your lungs

What happens when you breath out?

You expel air outside your lungs

What movements you make when you breath in?

The diaphragm goes down and the chest moves outwards

What movements you make when you breath out?

The diaphragm moves up and the chest moves inwards

How does the ribcage and the lungs get when you breathe in?

They get bigger

How does the ribcage and the lungs get when you breathe out?

They get smaller

Where does the gas exchange occur?

It occurs in the alveoli

What are the parts of the circulatory system?

The heart and the blod vessels

The circulatory system is formed by

The heart,the blood vessels(arteries,veins and capillaries) and the blood

The heart is

an organ made from muscles that contract and relax

The heart is located

inside the ribcage between the lungs

The four parts of the heart are

two atria and two ventricles

What do arteries do?

They carry blood from the heart around the body

What do veins do?

They carry blood from the body to the heart

Where are the chapels?

They are located between the arteries and the veins

What is blood?

Blood is a red liquid inside of the heart and the blood cells

What is the blood made up of?

It is made up of plasma and blood cells

What does plasma do?

It transports nutrients and gases

What do platelets do?

If the skin is wounded,they form a clot to stop the bleeding

What do white blood cells/leukocytes do?

They protect the body against infections

What do red blood cells/erythrocytes do ?

They carry oxygen

What are the two connected circuits in the circulatory system?

The pulmonary and the systemic circulation

What does pulmonary circulation consist of?

Blood with carbon dioxide through the venae cavae comes inside the heart and then it goes to the pulmonary artery flows through the pulmonary arteries and reaches the lungs,and the gas exchange occurs in the lungs,where the carbon dioxide is removed from the blood and the oxygen enters blood and that blood enters the heart from the pulmonary veins

What does pulmonary circulation consist of?

Pulmonary circulation is the short journey that deoxygenated blood takes from the right side of the heart to the lungs, where it is oxygenated by the fresh air you breathe in, where it releases the carbon dioxide you’ll expel when you exhale and takes in fresh oxygen to become clean, oxygen-rich blood that immediately returns to the left side of the heart, ready to be pumped vigorously throughout the body as a constant energy boost

What is excretion?

Is the process of removing the waste substances produced in our body

What makes up the urinary system?

The kidneys,the bladder and the urinary tract

What are the two parts of the urinary system?

The organs and the urinary tract

What are the two parts of the urinary tract?

The ureters and the urethra

What two organs are in the urinary system?

The kidneys and the bladder