Which of the following are present in the internal organs like stomach, intestine, etc.?
Correct answer: A. Option A
- A. Option A
- B. Option B
- C. Option C
- D. Both A and B
- E. Both A and C
Explanation
Smooth muscles are present in the walls of internal organs such as the stomach, intestine, bladder, etc. They are non-striated muscles that are not under voluntary control. Cardiac muscle, represented by option B, is found only in the heart and is also striated like skeletal muscle, Skeletal muscles, represented by option C, are attached to the bones and are under voluntary control. Therefore, the correct answer is option A.
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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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