The correct answer is less oxygen is absorbed by the body.
An infection of the lung parenchyma is what is meant by the term pneumonia. Health care workers must keep in mind that pneumonia is an umbrella word for a group of syndromes produced by a range of organisms, resulting in a diversity of presentations and consequences, rather than viewing it as a single disease. An infection of the lung parenchyma results from a number of diseases together referred to as pneumonia. There have been numerous attempts to categorize pneumonia according to its etiology, the clinical situation in which the patient contracted the infection, the pattern of lung parenchyma involvement, and other factors. This article examines pneumonia using the American Thoracic Society's system of classification.
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Acute exposure to high altitude can affect the cardiovascular system by decreasing oxygen in the blood (acute hypoxia). It also increases demand on the heart, adrenaline release and pulmonary artery pressures.
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Answer: 1. Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.
2. Plasma is the main component of blood and consists mostly of water, with proteins, ions, nutrients, and wastes mixed in. Red blood cells are responsible for carrying oxygen and carbon dioxide. Platelets are responsible for blood clotting. White blood cells are part of the immune system and function in immune response.
3.Within the bone marrow, all blood cells originate from a single type of unspecialized cell called a stem cell. When a stem cell divides, it first becomes an immature red blood cell, white blood cell, or platelet-producing cell.
4. Epinephrine and norepinephrine, hormones secreted by the adrenal medulla, raise blood pressure by increasing heart rate and the contractility of the heart muscles and by causing vasoconstriction of arteries and veins. These hormones are secreted as part of the fight‐or‐flight response.
Answer:
tunica intima (inner layer)
Explanation:
Walls of veins is composed of three layers, which are:
- A. Outer layer (tunica adventitia) is of connective tissue with the collagen fibers.
- B. Middle layer (tunica media) is of smooth muscle which are arranged circularly and the elastic fibers.
- <u>C.Inner layer (tunica intima) which consists of specialized simple squamous epithelium which are also known endothelium which lines all the blood vessels and endocardium of heart.</u>
