Difference Between Blood and Lymph

Functions of Blood and Lymph

They are the circulatory fluids of the animal body, blood is a part of the circulatory system whereas lymph is part of the lymphatic system.

Blood helps in carrying oxygen around the body to different parts and organs with the help of pigments, due to which they can be of different colors in different animals as the pigments are not always the same.

Whereas lymph is a colorless liquid, found mostly in the inter-cellular spaces of a tissue.

Blood has RBC’s, WBC’s, platelets and a fluid called plasma.

Whereas lymph has WBC’s and watery fluid.

They both have immune and also circulatory functions in them.

One of the major differences between them is that blood flows through blood vessels and lymph through lymphatic vessels.

Blood:-

Blood is a circulatory fluid of the animal body, it helps in the transportation of oxygen, nutrients, and metabolic wastes to different parts of the body.

Composition:- it is majorly composed of blood cells, which are RBC's and WBC's suspended in plasma.

Plasma is mostly water (92% by volume) and has proteins, ions, glucose, and hormones.

Albumin, the major protein of plasma, the blood cells are mainly RBC’s (red blood cells) also called as erythrocytes, WBC’s (white blood cells) also called as leukocytes and platelets, also called as thrombocytes.

RBC’s have hemoglobin in them, an iron-containing protein, which helps in oxygen transport. carbon dioxide is majorly carried extracellularly as bicarbonate ion in plasma.



Hemoglobin

Function: -
major functions of blood are:-

  • Supplying O2 to tissues and organs.

  • Supplying nutrients like glucose, amino acids, and fatty acids.

  • Removal of metabolic wastes like CO2, urea, and lactic acid.

  • Immunological functions are the circulation of WBC's, detection of foreign particles with the aid of antibodies.

  • Coagulation, which is the response to the broken blood vessel, by conversion of blood to a semisolid gel for prevention of blood loss.

  • transport of substances like hormones and signaling of tissue damage

  • maintaining homeostasis.


  • Lymph: -

    lymph is another type of circulatory fluid of the animal body, it flows through the lymphatic system, which consists of lymph nodes, lymph vessels.
    Composition: - It is majorly composed of interstitial fluid. i.e., the fluid that lies in the interstitial spaces of all body tissues, which is collected through lymph capillaries
    It is similar to blood plasma, i.e. the fluid component of blood. Lymph brings back proteins and excess interstitial fluid into the bloodstream.
    It also transports fats in blood in the form of ofchylomicrons.

    Lymph leaving the lymph node is richer in lymphocytes. lymph formed in the digestive system is called chyle and is rich in triglycerides, it looks milky white cause of its high lipid content.

    Functions: -

    the functions of lymph are: -

  • responsible for the removal of interstitial fluid from tissues

  • absorbs and transports fats as chyle from the digestive system

  • transports WBC’s to and from lymph nodes into bones

  • it transports antigen-presenting cells, like dendritic cells to lymph nodes where immune response occurs.


  • Similarities between blood and lymph: -

  • Both of them are types of circulatory fluids.

  • Both of them circulate within vessels.

  • Both of them have an immune function in the body.

  • They are both joined together by a system of capillaries.


  • Difference between blood and lymph: -

    LymphBlood
    colorless fluid.reddish colored fluid.
    part of lymphatic systempart of the circulatory system
    helps in the body's defense as it is a part of the immune system. associated with circulation of O2 and CO2, substances like hormones, waste products etc.
    contains plasma and a lesser number of WBCs and platelets. contains plasma, RBCs, WBCs, and platelets.
    Carries a low amount of O2.Carries a large amount of O2.
    Lymph plasma lacks proteins.Blood plasma has proteins, calcium, and phosphorus.
    Transports nutrients from tissues and cells to the blood, via lymphatic vessels.Transports nutrients and O2 from one organ to another.
    the flow of lymph is slow.the flow of blood in blood vessels is fast.
    Clots slowly as less fibrinogen is present.Clots quickly as high amount of fibrinogen is present.
    Uni-directional movement.movement of Blood is circular motion.


    Conclusion: -

    Both are two circulatory fluids of the body, Blood moves via blood vessels and lymph moves via lymphatic vessels. Blood transports gases, nutrients, and metabolic wastes. Lymph is draining of tissue fluid into the circulatory system. The major difference between blood and lymph is their function in the body.