MCQ
What are the three basic components of connective tissues?
- AGround substance, cells and basement membrane
- BCartilage, intercellular matrix and serum
- ✓Cells, protein fibers and ground substance
- DCollagen, elastin and reticular fibers
✓
Answer
Correct option: C.
Cells, protein fibers and ground substance
c
Connective tissue fills the spaces between organs and tissues, and provides structural and metabolic support for other tissues and organs. The three basic components of connective tissue are cells, protein fibres and ground matrix.
Connective tissue fills the spaces between organs and tissues, and provides structural and metabolic support for other tissues and organs. The three basic components of connective tissue are cells, protein fibres and ground matrix.
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(i) Each actin filament is made of two 'F' (filamentous) actins helically wound to each other.
(ii) Many monomeric proteins called meromyosins constitute one thick filament.
(iii) Two filaments of protein, troponin run close to the 'F'actins throughout its length.
(iv) Each meromyosin has two important parts, a globular head with a short arm called the heavy meromyosin (HMM) and a tail, called the light meromyosin (LMM).
(v) In the resting state a subunit of tropomyosin masks the active binding sites for myosin on the actin filaments.
(vi) Each 'F' actin is a polymer of monomeric 'G' (Globular) actins.
(vii) The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for thin filament.