The Circulatory System - The Blood

Question 0

Job of red blood cells:

Answer 0

Carry oxygen from the lungs to all the cells in the body

Question 1

Red blood cells:

Answer 1

Carry oxygen

Question 2

Shape of red blood cells:

Answer 2

Biconcave shape to give a large surface area for absorbing oxygen

Question 3

Red blood cells contain:

Answer 3

Haemoglobin - which contains a lot of iron

Question 4

In the lungs haemoglobin combines with oxygen to become:

Answer 4

Oxyhemoglobin.

Question 5

What do red blood cells not have:

Answer 5

A nucleus - this allows more room for haemoglobin

Question 6

White blood cells:

Answer 6

Defend against disease

Question 7

White blood cells change shape:

Answer 7

To engulf unwelcome microorganism

Question 8

White blood cells produce:

Answer 8

Antibodies to fight microorganisms, as well as antitoxins to neutralise any toxins produced by the microorganisms

Question 9

What could happen if you have a low white blood cell count:

Answer 9

Could increase risk of infection, whereas a high count could mean you have an infection

Question 10

Platelets:

Answer 10

Help blood clot

Question 11

Platelets are:

Answer 11

Small fragments of cells

Question 12

What do platelets help:

Answer 12

To clot a wound to stop all the blood pouring out and to stop microorganisms getting in

Question 13

What can a lack of platelets cause:

Answer 13

Excessive bleeding and bruising

Question 14

Plasma:

Answer 14

Is the liquid that carries everything in blood

Question 15

The plasma transports:

Answer 15

Red and white blood cells and platelets

Nutrients like glucose and amino acids

Carbon dioxide - waste product from every cell

Urea - waste product formed in liver

Hormones - transported from glands to target organs

Antibodies and antitoxins - produced by white blood cells

Question 16

What does the plasma look like:

Answer 16

A pale yellow liquid