Cuculatory Sistem

Question 1

Food + oxygen = ?

Answer 1

CO2 (breathed out) + water + energy

Question 2

What is heart rate increase?

Answer 2

speeds up the rate at which oxygen and food in the blood and gets carried to the cells and carbon dioxide and water get Carried away from the cells

Question 3

What is breathing rate increase?

Answer 3

gets more oxygen into the blood and gets rid of extra co2 produced by the increased levels of respiration

Question 4

List the seven steps of the interaction between breathing and the circulatory system

Answer 4

1) You take oxygen into your body when you breathe in

2)Lungs are fill of tiny blood vessels called capillaries They have small holes in their walls which allow oxygen to pass through the walls into the blood

3) Oxygen is carried by red blood cells to the heart and pumped around body to respiring tissues

4) Blood flows through capillaries that run through tissues. Capillaries allow oxygen to pass out of the blood so that it can be released directly into your cells

5) while oxygen is moving out the blood and into tissues, CO2 moves out of your cells through the capillaries and into the blood.

6) Blood returns os the heart and is pumped back to your lungs

7)You breathe waste CO2 out of your body

Question 5

What is gaseous exchange?

Answer 5

We say that gas exchange has occurred because in both lungs and tissues, waste in has been exchanged for fresh supply of oxygen

Question 6

Where does gaseous exchange occur?

Answer 6

The Alveoli

Question 7

Alveoli:

Capillaries:

intercostal muscles:

plural cavity:

Answer 7

Alveoli: tiny air sacs at the end of the air passages of the lungs. Each alveolus is covered in many capillaries

Capillaries: tiny thin-walled blood vessels which let oxygen into the blood and allow co2 out

Intercostal muscles: group of muscles that run between ribs and help movement of the chest

Pleural cavity: a space that is enclosed by spine, ribs, and breast bone

Question 8

What happens when you breathe in? (Six)

Answer 8

• Rib cage rises
• Intercostal muscles contract
• Diaphragm drops
• Increases the size (volume) of chest cavity
• the pressure of the air inside the chest is less than the pressure of the air outside the body
• Air is ‘Sucked’ into the lungs

Question 9

What happens when you breathe out?

Answer 9

• Rib cage falls
• Intercostal muscles relax
• Diaphragm relaxes and moves up
• Chest cavity gets smaller, air inside has less room
• The pressure of the air inside the chest is higher than pressure outside body
• Air is ‘squeezed’ out of lungs

Question 10

Parts of the respatory system (5)

Answer 10

1 Nose and mouth: passageway into respiratory system that helps warm air

2 Pharynx: throat, transports air, Food, water; includes parts of trachea and esophagus

3 Larynx: voice box, vocal cords are stretched across larynx opening

4 Trachea wind pipe, carnes air from larynx to lungs, covered in cartilage for protection

5. Bronchi/ bronchial tubes: two tubes split off from trachea, one tube goes to each lung Each tube splits into ting tubes called bronchioles

Question 11

What is cellular respiration?

Answer 11

Cellular respiration: chemical reaction that uses oxygen to release energy from food

Question 12

What is cellular respiration?

Answer 12

Cellular respiration: chemical reaction that uses oxygen to release energy from food

Question 13

What Does blood do?

Answer 13

Carries food and oxygen to your body cells,

carries waste materials away before they poison the cells,

carries heat around your body so that body temperature rises.

Question 14

What do these things do?
platelets:
white blood cells:
plasma:
Red blood cells:

Answer 14

Stops belding during injury by clotting

help fight infection

transports nutrients, Hormones, proteins

Carries oxygeh and carbon dioxide away from cells

Question 15

Blood vessels that carry blood away from the heart:

blood vessels that carry blood to the heart:

What do capillaries do?

Answer 15

Arteries

Veins

Connects The veins and arteries