Bronchodilators
smooth muscles
they both contract and relax to cause movement and both are uninucleated.
CNS
No, it's a vasodilator that act on the smooth muscles in the vascular wall and relax them
Achalasia
no
They relax to hold your pee and contrast when you want the pee to get out.
No, the muscles in your leg are skeletal muscles. Smooth muscle is found for example in vessels and the gastrointistinal tract. Yes smooth muscles are involuntary, which means they contract and relax without our conscious decision for them to do so, however we have control over when we want to move our leg muscles, so it cannot be smooth muscle, they are as said before my answer, quite rightly, skeletal muscles
Yes the heart does contract and relax for every moment of ones life .This action enables the blood to circulate the body efficiently
smooth muscles are involuntarily used muscles. these are present in the digestive system that moves and processes food. this is opposed to striped muscles that are voluntarily moved e.g. biceps; and cardic muscle that is present in the heart.
It has smooth muscles in order to support the lungs It is the role of cartilage to structurally support the trachea so it does not collapse in on itself (pulmonary atelectasis) during inspiration when the pressure in the lungs drops below atmospheric level. No that is wrong, smooth muscle is controlled subconsciously by the autonomic nervous system, and its function is to constrict or dilate, (by contracting or relaxing respectively), the airways to ease or restrict air flow through them. For example when you exercise, the smooth muscle will relax causing the diameter of the trachea to increase so more air can flow through them and hence allow a greater volume of oxygen to processed as needed by the body for respiration to release energy and provide this to the muscle cells during exercise. However, when one is surrounded by something which one is toxic such as a harmful gas, then the smooth muscle may contract and constrict the airways to reduce airflow and thus the amount of this toxic substance from entering the lungs and damaging the lung tissue.
Yes, Muscles relax whenever you relax without moving, your muscles make you move, and bones keep your shape!