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प्रश्न
What is special about tissue present in the heart?
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उत्तर
Cardiac muscle tissue is contractile tissue present only in the heart. Cell junctions fuse the plasma membranes of cardiac muscle cells and make them stick together. Communication junctions (intercalated discs) at some fusion points allow the cells to contract as a unit, i.e. when one cell receives a signal to contract, its neighbours are also stimulated to contract.
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संबंधित प्रश्न
Identify the type of tissue in the bone.
Distinguish between Dense regular and dense irregular connective tissues
Name the kind of tissue that Supports an animal’s body
What is the function of bone, cartilage and ligament?
Give three functions of blood.
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
Name one place in living organisms where the following tissue is located:
Ligament
Why is blood called a tissue? Give reasons.
Differentiate between:
Tendon and Ligament
Give structure, types and functions in brief of the following:
Connective tissue
Give the structure and function of the following:
Bone
The question has four answers. Choose the correct answer:
Connective tissue connects
Bone matrix is rich in
Water hyacinth float on water surface. Explain.
______ have guard cells.
Give reasons for
Branches of a tree move and bend freely in high wind velocity.
White blood corpuscles contain respiratory pigment hemoglobin.
Write one point of difference between
Bone and cartilage.
Match the following and choose the correct option
| Column I | Column II |
| A. Adipose tissue | i. Nose |
| B. Stratified epithelium | ii. Blood |
| C. Hyaline cartilage | iii. Skin |
| D. Fluid connective tissue | iv. Fat storage |
