Question

Name the fluid connective tissue in humans. What are its various constituents ?

Answer 1

Yes, it is a fluid connective tissue.
Conncetive tissues are tissues that supports, connects, or separates different types of tissues and organs of the body. Its cells are surrounded by and Extracellular fluid, fibres (protiens) and the ground substances (proteoglycans). Both fibres and ground substance togethr consitute the matrix.

Now coming to blood. Blood lacks fibres, which makes it more fluidic. But at the same satisfies the definition as, it is connecting different organs and tissues at the same time it also acts as a barrier. And hence it is considered as special connective tissue

Answer 2

Blood is the fluid connective tissue in humans. Blood is a vital body fluid, consisting of plasma, platelets and red and White blood cells.

An adult human has about 5.5litres , which travel around in the circulatory system. The blood distributes heat and carries many important Substances in it's plasma.


Blood constituents :-


plasma :
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The pale liquid ( about 90% ) which contains the blood cells. It carries dissolved food for the body cells, waste matter and carbon-dioxide se created by them, antibodies to combat infection, and enzymes and hormones which controls body processes.


Red Blood Cells :
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Also called red corpuscles or erythrocytes . Red, disc-shaped cells with no nuclei. They are made in the bone marrow and contains haemoglobin. This combines with oxygen in the lungs to form oxyhemoglobin, and the blood becomes bright red. The red cells pass the oxygen to the body cells by diffusion, and then return to the lungs with haemoglobin.


Platelets or thrombocytes :
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very small , disc-shaped bodies with no nuclei, made in the bone marrow. They gather particularly at an injured area, where they are important in the clotting of blood.


White Blood Cells :
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Also called white corpuscles or leucocytes . large , opaque blood cells, important in body defence . There are several types. lymphocytes, are made in lymphoid tissue and are found in the lymphatic system as well as blood. They make antibodies, other white cells - monocytes -are made in bone marrow . They swallow up foreign bodies, e.g, bacteria in a process called phagocytosis.