Key Area 6- Transport systems (animals)

Question 1

What does the blood in mammals contain?

Answer 1

Plasma, red blood cells and white blood cells.

Question 2

What does blood in mammals transport?

Answer 2

Nutrients, oxygen and carbon dioxide

Question 3

What features make red blood cells specialised?

Answer 3

-No nucleus(more space for oxygen)
-Biconcave shape(more surface area for oxygen intake)
-Contains haemoglobin(chemical able to bind oxygen into oxyhaemoglobin)

Question 4

What do white blood cells do?

Answer 4

They are apart of the immune system and are involved in destroying pathogens

Question 5

What features make veins specialised?

Answer 5

Carry blood INTO heart.
-have thing walls and a wider channel to carry blood under low pressure
-have valves to prevent blood backflow

Question 6

What features make arteries specialised?

Answer 6

Carry blood AWAY from the heart.
-thick, muscular walls, a narrow central channel and carry blood
under high pressure

Question 7

What pathway does blood travel through the heart?

Answer 7

Vena cava-> Right atrium-> Right ventricle-> Pulmonary artery-> The lungs-> Pulmonary vein-> Left atrium-> Left ventricle-> Aorta-> The body

Question 8

What makes up the blood?

Answer 8

Red blood cells, white blood cells, plasma and platelets

Question 9

What are the two types of white blood cells called?

Answer 9

Lymphocytes and phagocytes

Question 10

What do lymphocytes do?

Answer 10

Produce antibodies which destroy pathogens, each antibody is specific to a particular pathogen.

Question 11

What do phagocytes do?

Answer 11

They work by a process called phagocytosis.
1) Detect a pathogen
2) Phagocytes engulfs pathogen
3) Pathogen digested by phagocyte

Question 12

What features make capillaries specialised?

Answer 12

Exchange of materials.
-thin walled and have a large surface area, forming networks at tissues and organs