Question 1(e)Differentiate between the following pairs on the basis of what is indicated within the brackets:Blood and lymph (composition)

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Difference between Blood and Lymph on the basis of composition:BloodLymphNon-cellular fluid part of blood is Plasma. It makes up 55-60% of the blood.Non-cellular part of Lymph is made up of mostly water (about 94%) and the remaining 6% is made up of proteins, fats, carbohydrates, enzymes, antibodies, etc.Cellular part of blood consists of red and white cells and platelets. They make up 40-45% of the blood.Cellular part of Lymph contains only leukocytes (mostly lymphocytes). Platelets and red blood cells are absent.

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  Biology | Chapter 8: Circulatory SystemWeb Content
  
    Circulatory System &ndash; Interactive Study Guide
    Quick OverviewThe circulatory system transports blood, oxygen, nutrients, and hormones throughout the body. It consists of the heart (pump), blood (transport medium), and blood vessels (pipelines).

Blood Components
    ComponentFunctionKey Fact
    Plasma (55%)Transports dissolved substances90% water, carries nutrients, hormones, waste
    RBCCarry oxygenBiconcave disc, no nucleus, contain haemoglobin
    WBCFight infectionsHave nucleus, larger than RBC, immune defence
    PlateletsBlood clottingCell fragments, no nucleus

Blood Group Quick Reference
    ABO System
    O = Universal Donor (no antigens) | AB = Universal Recipient (no antibodies)
    GroupAntigenAntibody
    AAanti-B
    BBanti-A
    ABA & BNone
    ONoneanti-A & anti-B

Heart &ndash; Quick Facts
    
      4 chambers: RA, RV, LA, LV
      4 valves: Tricuspid (R), Bicuspid (L), 2 Semilunar
      Septum divides right (deoxy) from left (oxy)
      Left ventricle = thickest wall

Double Circulation
    Two Circuits
    Pulmonary: RV &rarr; Pulmonary artery &rarr; Lungs &rarr; Pulmonary veins &rarr; LA
    Systemic: LV &rarr; Aorta &rarr; Body &rarr; Vena cava &rarr; RA

Blood Vessels Comparison
    ArteriesVeinsCapillaries
    DirectionAway from heartTo heartConnect A to V
    WallsThickThin1 cell thick
    ValvesNoYesNo

Self-Test Questions
    Test Yourself
    Why is the left ventricle wall thicker than the right?
    Draw and label the human heart.
    What is double circulation? Describe both circuits.
    Why is blood group O called universal donor?
    What is the function of valves in veins?

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The Circulatory System — Question 5

Question 1(e)

Circulatory System – Interactive Study Guide

Blood Components

Blood Group Quick Reference

Heart – Quick Facts

Double Circulation

Blood Vessels Comparison

Self-Test Questions

Blood	Lymph
Non-cellular fluid part of blood is Plasma. It makes up 55-60% of the blood.	Non-cellular part of Lymph is made up of mostly water (about 94%) and the remaining 6% is made up of proteins, fats, carbohydrates, enzymes, antibodies, etc.
Cellular part of blood consists of red and white cells and platelets. They make up 40-45% of the blood.	Cellular part of Lymph contains only leukocytes (mostly lymphocytes). Platelets and red blood cells are absent.

Component	Function	Key Fact
Plasma (55%)	Transports dissolved substances	90% water, carries nutrients, hormones, waste
RBC	Carry oxygen	Biconcave disc, no nucleus, contain haemoglobin
WBC	Fight infections	Have nucleus, larger than RBC, immune defence
Platelets	Blood clotting	Cell fragments, no nucleus

	Arteries	Veins	Capillaries
Direction	Away from heart	To heart	Connect A to V
Walls	Thick	Thin	1 cell thick
Valves	No	Yes	No

Group	Antigen	Antibody
A	A	anti-B
B	B	anti-A
AB	A & B	None
O	None	anti-A & anti-B