No the answer is not A because all your mucus builds up in your respiratory system not respiratory secretion. <span />
Answer:
It moves through the coronary arteries to the heart.
Explanation:
Once blood as been oxygenated in the lungs, it has completed the pulmonary cycle and then enters the heart. It enters the heart through the coronary arteries. Once it is in the heart it can be pumped throughout the body
They could set up a fundraiser, or an awareness campaign in order to inform the public about the disease
Cardiac-muscle cells are striated<span>, and are a lot like skeletal-muscle </span>cells<span> except that in cardiac muscle, the fibers are </span>interconnected<span>. The </span>sarcoplasmic reticulum<span> of cardiac-muscle cells is not as well-developed as that of skeletal-muscle cells. Cardiac-muscle contraction is </span>actin-regulated<span>, meaning that the calcium ions come both from the sarcoplasmic reticulum (as in skeletal muscle) and from outside the cell (as in smooth muscle). Otherwise, the chain of events that occurs in cardiac-muscle contraction is similar to that of skeletal muscle.</span>
