The ciliates<span> have both a </span>micronucleus<span> and </span>macronucleus<span>, which appear quite homogeneous in composition. The organelles of protozoa have functions similar to the organs of higher animals. The </span>plasma membrane<span> enclosing the </span>cytoplasm<span> also covers the projecting locomotory structures such as </span>pseudopodia<span>, </span>cilia<span>, and </span>flagella<span>.
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<span><span>The coronary sinus
</span>The coronary sinus is the special structure located on the posterior wall of the right atrium. It is an important structure as it provides information on both left atrial and left ventricular activity without requiring a trans-septal approach</span><span> (a technique for patients who have valvular disease)</span><span>. The coronary sinus serves as the primary collector of cardiac venous blood and it facilitates the movement of blood from the myocardium (a thick layer of muscle within the heart) into the right atrium. The coronary sinus also plays important roles when performing cardiac surgery and in other heart procedures.
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Hepatocyte growth factor (HGF) is the only known growth factor that activates quiescent satellite cells in skeletal muscle.
Hepatocyte growth factor regulates cell growth, cell motility, and morphogenesis by activating a tyrosine kinase signaling cascade after binding to the proto-oncogenic c-Met receptor. Hepatocyte growth factor is secreted by mesenchymal cells and acts as a multi-functional cytokine on cells of mainly epithelial origin.
HGF, produced by some cancer cells, stimulates c-Met, through activation of the autocrine signaling system. Hepatocyte growth factor (HGF) is a paracrine hormone that plays an important role in epithelial-mesenchymal transition. HGF secreted by mesenchymal cells affects many properties of epithelial cells, such as proliferation, motility, and morphology.
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I believe it would be number 4
