Which of the following is a uni-nucleated cell?
Correct answer: D. Both B and C
- A. Skeletal muscle
- B. Cardiac muscle
- C. Smooth muscle
- D. Both B and C
Explanation
Smooth muscles are uni-nucleated and non-striated. It is composed of small spindle-shaped cells with a single, central nucleus. They have unbranched cells that are controlled by the autonomic nervous system. The function of smooth muscle is to contract like any muscle tissue. Unlike skeletal muscle cells, cardiomyocytes normally contain a single nucleus. Cardiomyocytes generally contain the same cell organelles as skeletal muscle cells, although they contain more sarcosomes.
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About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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