Striated, Unstriated and Cardiac muscles are three types of muscle tissues. Their different characteristics are as follows:
Character | Striated Muscles | Unstriated Muscles | Cardiac Muscles |
---|---|---|---|
1. Shape of cells | Cells are long cylindrical, non-tapering and unbranched. | Cells are long with tapering ends (spindle shape) and unbranched. | Cells are non-tapering, cylindrical and branched. |
2. Nucleus | Many nuclei (multinucleated) which are situated towards the periphery of muscle fibre. | The cells have only one nucleus (uni-nucleated) situated in the center. | Each cell contains one or two nuclei situated in the center. |
3. Striation | Transverse alternate light and dark bands present. | Striations or strips are absent. | Cells have faint striations. |
4. Mode of Contraction | Voluntary contract rapidly but soon undergo fatigue. | Involuntarily not at our will. Contract comparatively slow but do not fatigue. | Involuntary, rhythmically contract and relax throughout life without fatigue under normal conditions. |
5. Example of location | Hands, legs and other skeletal muscles. | Stomach wall, intestine, ureter, bronchi etc. | Present in heart. |
Given below are two statements:
Statement I: Ligaments are dense irregular tissue.
Statement II: Cartilage is dense regular tissue.
In the light of the above statements, choose the correct answer from the options given below:
Match List I with List II.
List I | List II | ||
A | Mast cells | I | Ciliated epithelium |
B | Inner surface | II | Areolar connective tissue Of bronchiole |
C | Blood | III | Cuboidal epithelium |
D | Tubular parts | IV | Specialised connective tissue of nephron |
Choose the correct answer from the options give below:
Match list I with list II:
List - I | List - II | ||
(a) | Bronchioles | (i) | Dense Regular Connective Tissue |
(b) | Goblet Cell | (ii) | Loose Connective Tissue |
(c) | Tendons | (iii) | Glandular Tissue |
(d) | Adipose Tissue | (iv) | Ciliated Epithelium |
In Fig. 9.26, A, B, C and D are four points on a circle. AC and BD intersect at a point E such that ∠ BEC = 130° and ∠ ECD = 20°. Find ∠ BAC.
Human bodies, like most animal bodies, are made up of four different types of tissue:
This tissue forms the outer layer of the body and also lines many of the body's cavities where it has a protective function.
General functions of epithelial tissue:-
This tissue assists in the support and protection of organs and limbs and depending on the location in the body it may join or separate organs or parts of the body.
This tissue enables various forms of movement, both voluntary and involuntary.
This tissue is responsible for the carrying of electrical and chemical signals and impulses from the brain and central nervous system to the periphery, and vice versa.