Project #121362 - week 5 post

please resond to students coments.

Student: Erin H.

4. Functions of the Liver: Production of bile, which helps carry away waste and break down fats in the small intestine during digestion. Production of certain proteins for blood plasma. Production of cholesterol and special proteins to help carry fats through the body Store and release glucose as needed. Processing of hemoglobin for use of its iron content (the liver stores iron) Conversion of harmful ammonia to urea (urea is one of the end products of protein metabolism that is excreted in the urine) Clearing the blood of drugs and other harmful substances. Regulating blood clotting Resisting infections by producing immune factors and removing bacteria from the bloodstream. Clearance of bilirubin (if there is a buildup of bilirubin, the skin and eyes turn yellow)

Anatomy and Function of the Liver." Anatomy and Function of the Liver. Stanford Childrens Health, 2016. Web. 11 Apr. 2016.

5. A physician should be consulted due to the fact that there are a lot of other organs around the area of the stomach. Part of the challenge of figuring out what is causing the 'abdominal pain' is to rule in or out things like: pancreatitis, gallstones, Crohn’s disease, or stomach cancer. Stomach ulcers can lead to more issues like severe bleeding that can cause anemia. There are many other symptoms that may lead to more serious problems. If left untreated, ulcers can eat into the wall of the stomach or intestines, causing internal bleeding, perforations or obstruction of the digestive system.

Student:Latoya

Discuss the relationship between intrapulmonary pressure and intrapleural pressure. What happens to intrapulmonary pressure relative to intrapleural pressure when Valsalva's maneuver is performed?

  • The difference between intrapulmonary pressure and intrapleural pressure is that intrapulmonary pressure is the pressure in the lungs subatmospheric during inspiration and greater than the atmospheric pressure during expiration. Intrapleural pressure is when the lungs pull in one direction and try to collapse while thoracic wall pull in opposite direction and try expand, will produce a sub atmospheric pressure in the intrapleural space.
  • The Valsalva’s maneuver is a maneuver in which one tries with force to exhale with the air passage from the throat to the lungs, trachea closed, and slow down the return of venous blood to the heart. intrapulmonary pressures and intrapleural pressure increase changes from negative to positive, so venous return to the right ventricle decreases consequently, cardiac output and blood pressure decrease and will cause blood pressure reflex tachycardia.

Why are only slightly higher atmospheric levels of carbon monoxide gas dangerous?

  • The only slightly higher atmospheric levels of carbon monoxide gas dangerous because carbon dioxide is a colorless, odorless, and poisonous gas. The gas is created when fossil fuels such as gasoline, wood, coal, propane, oil and methane burn incompletely. Carbon monoxide systems are headache, nausea, dizziness confusion and shortness of breath. The high absorptions can rapidly causes death.

Expand upon the importance of the liver.

  • The liver is the largest glandular organ in the body and performs multiple critical functions to keep the body pure of toxins and harmful substances. Healthy liver limited hepatocyte replication small number of progenitor cells, hepatic injury acute massive confluent loss of hepatocytes and chronic injury senescence of hepatocytes malfunction, hepatocyte replication is acute injury survivor, acute injury non-survivor and chronic injury, then the progenitor cell response.

Student:Tinesha

1. Discuss the logic behind the structure of the conducting airways. Why are cartilage rings necessary? Why is smooth muscle in the walls of the conducting tubes necessary? 
The conducting zone consists of the nose, pharynx, larynx, trachea, bronchi, and bronchioles. This is a zone which conducts continuous passageway for air to move in and out of the lungs. The cartilage rings are necessary in the trachea because they hold the trachea open to allow air to pass through and help to prevent the trachea from collapsing. The human body has 15 to 20 cartilaginous rings to protect and maintain the airway open. Smooth muscle in the walls of the conducting tubes are necessary because the arterial wall is what causes arteries to expand and contract with the flow of the blood.


2. Discuss the relationship between intrapulmonary pressure and intrapleural pressure. What happens to intrapulmonary pressure relative to intrapleural pressure when Valsalva's maneuver is performed?

Intrapleural pressure also called intrathoracic pressure refers to when lungs pull in one direction and try to collapse while thoracic wall pull in opposite direction and try expand, will produce a subatmospheric pressure in the intrapleural space.the pressure within the pleural cavity. This known as negative pressure. Intrapulmonary pressure is the pressure within the lungs. This pressure varies between inspiration and expiration. During inspiration intrapulmonary pressure becomes less than atmospheric pressure, and during expiration it becomes greater than atmospheric pressure. The Valsalva maneuver is accomplished by performing a forced expiration with the glottis closed. All intrathoracic pressures, including intrapleural and intrapulmonary pressures, increase; intracellular pressure changes from negative to positive, so venous return to the right ventricle decreases: consequently, cardiac output and blood pressure decrease: the decrease in blood pressure results in a reflex increase in heart rate.

Student:presious

4. Expand upon the importance of the liver.

The liver has almost 200 known functions. It is basically the body's chemical processing plant. It receives 30% of the blood circulating blood in your system every minute. Some of the most important functions is secreting bile and regulating nutrient composition of blood. It stores fat soluble vitamins, stores blood, fights toxins, processes proteins, and absorb and breaks down circulating hormones an immunoglobulins just to name a few. It is a very vital organ that does a lot for our bodies on a daily basis.

5. Why is it necessary for someone with ulcer-like symptoms to consult a physician rather than just use antacids?

Antacids are made to treat heartburn problems every once in a while. They are not capable of treating more serious issues, such as ulcers, or ulcer-like symptoms. Ulcers occur in the lining of the stomach. One of the treatments for ulcers is to reduce the acid levels in the stomach. Taking antacids to may counteract with that, causing more issues. If a person has an ulcer rather than heartburn, they are more likely to be experiencing more pain and issues, than a person who just has heartburn. So they may be taking more antacids making the situation worse. It is best to talk with a doctor and get the proper care.

Subject Science
Due By (Pacific Time) 04/16/2016 06:00 pm
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