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प्रश्न
What are the cellular components of blood?
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उत्तर
Blood is a fluid connective tissue. It is composed of plasma (fluid) and blood cells (corpuscles).
Cellular components of blood (blood corpuscles) constitute about 45% of blood volume.
Three types of blood cells are:
(i) Erythrocytes or red blood cells: They are most abundant blood cells. Normal RBC count is 5-5.5 million/mm3 in males and 4.5-5 million/mm3 in females) RBCs help in transport of gases and maintain blood pH.
(ii) Leucocytes or white blood cells: The normal WBC count is 5000-6000/mm3 of blood. They are involved in immune response of body and act as soldiers and scavangers.
(iii) Thrombocytes or blood platelets: There are about 2,50,000 platelets/mm3 of blood. They are involved in blood clotting.
संबंधित प्रश्न
Define the term of connective tissue
List One Function of the Following : 2. Chondroblasts
Distinguish between the following pairs in one or two sentences for each
(a) RBCs and WBCs;
(b) bone and cartilage;
(c) blood and lymph.
(d) tendon and ligament
Differentiate between:
Blood and Lymph
Give the structure and function of the following:
Bone
What is skeletal connective tissue? How is it helpful in the functioning of our body?
Bone matrix is rich in
Which of the following cells is found in the cartilaginous tissue of the body?
Lining of blood vessels is made up of ______.
Water hyacinth float on water surface. Explain.
Give reasons for
Branches of a tree move and bend freely in high wind velocity.
Two long bones of the hand are dislocated in a person who met with an accident. Which among the following may be the possible reason?
The matrix of the bone is rich in ______.
Excessive pulling of bones causes a sprain.
Name the tissue that stores excess fat in our body.
Name the cartilage cells present in the matrix.
Why is blood considered to be a fluid connective tissue?
Identify figures A and B.
- ______ epithelium forms the outer lining of the buccal cavity.
- ______ epithelium consists of ceils that are tall and pillar-like.
- Which one allows the diffusion of substances?
- Which is called pavement epithelium?
- Which epithelium lines the gastrointestinal tract and epiglottis
To which one of the following categories does adipose tissue belong?
Why are blood, bone and cartilage called connective tissue?
