For the preparation of the temporary slide of the smooth muscles of frog, the sample is taken from the dissected organs.The organ suitable for the selection of smooth muscles is
Correct answer: D. Urinary bladder
- A. Skin
- B. Heart
- C. Forelimb
- D. Urinary bladder
Explanation
The correct answer is the urinary bladder. Smooth muscle is found in the walls of hollow organs such as the urinary bladder, where it helps control the flow of urine. The other options do not primarily consist of smooth muscle: the skin contains mostly epithelial and connective tissue, the heart is made of cardiac muscle, and the forelimb contains skeletal muscle.
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Muscles covers skeletal, smooth and cardiac muscle, their microscopic structure and the roles of tendons, myofibrils, actin and myosin. It explains the sliding filament mechanism, sarcomere shortening, neuromuscular transmission and calcium regulation, while distinguishing voluntary skeletal movement from involuntary contraction in smooth and cardiac muscle.
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