The Blood

Question 1

Blood

Answer 1

Fluid connective tissue

Connects vital organs and transports vital gases and nutrients to body tissues while removing waste

Question 2

Function of the blood (7)

Answer 2

• Transport of nutrients, gases and waste products.
• Transport of processed molecules.
• Regulatory molecules such as hormones.
• Maintains thermoregulation of the body.
• Protection against foreign materials (antibodies)
• Regulation of pH (buffer system) and osmosis (equilibrium)
• Clotting cascade formation.

Question 3

Clotting Cascade

Answer 3

Protective component to prevent excess blood loss.

Question 4

Blood Components

Answer 4

plasma
red blood cells
white blood cells
platelets

Question 5

Plasma Proteins

Answer 5

Albumin, Globulin, Fibrinogen and Prothrombin

Question 6

osmotic pressure

Answer 6

Plasma is also responsible for maintaining the osmotic pressure within the blood. (If plasma proteins fall, osmotic pressure is reduced and fluid shifts into the tissues in the body cavity causing oedema.)

Question 7

Plasma Contents

Answer 7

Water 
Plasma Protein 
Electrolytes 
Nutrients 
Waste Products 
Hormones 
Gases

Question 8

Red Blood Cells

Answer 8

Erythrocytes

Biconcave shape
Small and Flexible
No nucleus
Large surface area

function- to deliver oxygen around the body from the lungs and return carbon dioxide to the lungs

Question 9

Life span of a red blood cell

Answer 9

produced in red blood cell
regulated by erythropoietin hormone

100-120 day life span

destroyed by macrophages in the spleen liver and bone marrow

Question 10

White blood cell function

Answer 10

protect the body from invading microbes

Question 11

Platelets

Answer 11

important in preventing blood loss by forming thromboses

small disc shaped fragments

produced in the bone marrow
production regulated by thrombopoietin

stored in the slpeen.