97.Which is correctly paired? A. Heart-involuntary, unstriated muscle B. Iris-involuntary, smooth muscle C. Biceps-smooth muscle D. Abdominal wall ,skeketal muscles
Option B The smooth muscle fibres(muscle cell) are tapered at both ends (fusiform) and do not show striations. Smooth muscles are involuntary muscles because their functioning cannot be directly controlled. The wall of internal organs such as the blood vessels, stomach, intestine and iris contains this type of muscle tissue. Hence Iris-Involuntary, smooth muscle.
