Common colds are caused by viruses and antibiotics only work in bacteria. Antibiotics work by targeting the different replication processes and functional characteristics of bacteria. Virus on the other hand are only active once they have invaded something to use as a host. Therefore it is more difficult to target the mechanisms of viruses because they are usually dormant and have different organelles than of bacteria.
If the pulmonary artery is blocked, blood would go back up to the right ventricle of the heart.
<h3>What is pulmonary artery stenosis? </h3>
The pulmonary artery is responsible for carrying the deoxygenated blood from the right ventricle of the heart to the lungs to get oxygenated.
Pulmonary artery stenosis is a condition in which the pulmonary artery gets narrowed or blocked. Therefore, blood flow from the heart to the lungs is hampered.
This creates pressure on the walls of the heart. Also, if blood flow towards the lungs is hampered, the heart will not receive the required amount of oxygen. All of this will lead to damage to the heart muscles over the course of time.
Therefore, as a result of the pulmonary blockage, blood would first back up into the right ventricle.
Read more about heart valves and vessels, here brainly.com/question/22836711
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The right option is; The neuromuscular system
The neuromuscular system directs and coordinates the interrelated activities of the gastrointestinal tract.
The neuromuscular system connects the central nervous system to the peripheral nervous system and it is composed of the nervous system, somatic system, autonomic system and the muscular system which include skeletal, cardiac, and smooth muscles. The neuromuscular system is important in the activities of the gastrointestinal tract, body movements and breathing.
