4.2.2.3 blood

Question 1

What type of cells control the heart rate in the right atrium

Answer 1

Pacemaker cells

Question 2

Blood is a tissue consisting of..

Answer 2

Plasma, in which the red blood cells, white blood cells and platelets are suspended.

Question 3

What are platelets

Answer 3

They produce clots which reduce the amount of blood being bled from a wound.

Question 4

Name the four types of cell within blood

Answer 4

Plasma, platelet, red and white blood cells

Question 5

State characteristics of red blood cells

Answer 5

They carry oxygen
They have no nucleus
Hemoglobin - in red blood cells that transport oxygen to tissue.

Question 6

State characteristics of plasma

Answer 6

Watery fluid in which holds all the components within a blood flow.
Transports cells, carbon dioxide, hormones and excretion.

Question 7

State characteristics of platelets

Answer 7

• form cells
  -form blood clots to reduce bleeding around wounds

Question 8

State characteristics of white blood cells

Answer 8

-apart of the immune system
-produces antibodies to fight off infection
-they detect common disease and prevent it from entering the body.

Question 9

What is lumen

Answer 9

The central cavity of a tubular or other hollow structure in an organism or cell.

Question 10

What is hemoglobin

Answer 10

A red protein responsible for transporting oxygen in the blood of vertebrates. It’s molecule comprises four subunits, each containing an iron atom bound to a haem group.