B3 Heart and blood vessels

Question 1

Give the function of the heart

Answer 1

An organ that pumps around the body

Question 2

Name the chamber labelled A

Answer 2

Right atrium

Question 3

What is the purpose of the circulatory system?

Answer 3

Carriers oxygen and other useful substances to bodily tissues and removes waste substances

Question 4

Name the blood vessel labelled A

Answer 4

Vena cava

Question 5

How does a double circulation system work?

Answer 5

Right side of heart pumps blood to lungs to exchange oxygen and carbon dioxide

Left side of heart pumps blood to the rest of the body

Question 6

Name the top chambers in the heart

Answer 6

Left and right atrium

Question 7

Name the bottom chambers in the heart

Answer 7

Left and right ventricle

Question 8

Where does blood pumped by the right ventricle go?

Answer 8

Lungs

Question 9

Where does the blood pumped by the left side of the heart go?

Answer 9

Body tissues

Question 10

Which side of the heart pumps blood to the lungs?

Answer 10

Right

Question 11

Name the chamber labelled B

Answer 11

Left atrium

Question 12

Where does the left side of the heart pump blood to?

Answer 12

Rest of the body

Question 13

Name the blood vessel that delivers deoxygenated blood to the right atrium

Answer 13

Vena cava

Question 14

Why is the wall of the left ventricle thicker than the right ventricle?

Answer 14

Has to pump blood at higher pressure around the whole body.

Question 15

Name the chamber labelled C

Answer 15

Right ventricle

Question 16

What is the purpose of the heart valves?

Answer 16

Prevent the back flow of blood

Question 17

What is the role of the coronary arteries?

Answer 17

Supply the heart muscle with oxygen and glucose

Question 18

Name the blood vessel labelled B

Answer 18

Aorta

Question 19

Name the chamber labelled D

Answer 19

Left ventricle

Question 20

Name the structures labelled A

Answer 20

Valves

Question 21

Name the blood vessel labelled C

Answer 21

Pulmonary vein

Question 22

Blood flowing along the pulmonary artery is going to …?

Answer 22

Lungs

Question 23

Name the blood vessel that brings blood from the lungs to the left atrium

Answer 23

Pulmonary vein

Question 24

Name the blood vessel that takes blood away from the left ventricle

Answer 24

Aorta

Question 25

Name the blood vessel labelled D

Answer 25

Pulmonary artery

Question 26

Describe the flow of blood through the right side of the heart

Answer 26

Blood enters atrium via the vena cava Atrium contracts Blood forced through the heart valve into the ventricle Ventricle contracts Blood is forced into the pulmonary artery and sent to the lungs

Question 27

What is the approximate value of a resting heart rate?

Answer 27

60-70 beats per minute

Question 28

Where in the heart is the natural pacemaker?

Answer 28

Wall of the right atrium

Question 29

How can an abnormal heart rhythm be treated?

Answer 29

Artificial pacemaker which send out electrical signals to correct the hearts rhythm

Question 30

Name the three types of blood vessel

Answer 30

Arteries Capillaries Veins

Question 31

How are the arteries adapted for their function?

Answer 31

Function - carry blood away from the heart Adaptions Thick wall to withstand the high pressure Lots of muscle tissue - to add strength and allow wall to recoil Lots of elastic tissue - allows artery to stretch and recoil

Question 32

How are veins adapted for their function?

Answer 32

Function- carry blood towards the heart Adaptations Wide lumen to reduce pressure Valves to prevent backflow of blood

Question 33

How are capillaries adapted for their function?

Answer 33

Function - deliver glucose and oxygen to the tissues, remove carbon dioxide and urea from the cells Adaptations Walls one cell thick - short diffusion distance Permeable walls - substances can get out and into the blood Narrow lumen - blood moves slowly to give more time for diffusion