RESPIRATORY SYSTEM A complete‚ schematic view of the human respiratory system with their parts and functions. Latin: systema respiratorium The respiratory system (or ventilatory system) is a biological system consisting of specific organs and structures used for the process of respiration in an organism. The respiratory system is involved in the intake and exchange of oxygen and carbon dioxide between an organism and the environment. The primary function of the respiratory system is to supply
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d) When you stand up‚ venous pooling occurs due to gravity where about 20% of the blood in the body pools in the lower limbs and does not return to the heart straight away therefore the amount of blood that is pumped around the body when you stand up decreases and the arterial blood pressure drops. Venous compliance is high and veins are able to easily expand with blood therefore most of the shift in blood volume occurs in the veins. Venous volume in the lower limbs becomes very high when standing
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Venous Ulcers Homework 1. True/false: The medium and large veins in the leg have bicuspid valves to prevent retrograde venous blood flow‚ but the perforating veins do not have valves. False 2. What causes the ulcers to form in patients with venous insufficiency? [The question is what causes ulcers to form‚ not what causes venous insufficiency (people can have venous insufficiency and varicose veins for years without ulceration)] Ulceration is caused by hypoxia‚ which is a decrease in the amount
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Venous Ulcer A venous ulcer is a shallow sore on your lower leg caused by poor circulation of the veins. This condition used to be called a stasis ulcer. Veins have valves that help blood return to the heart. If these valves do not work properly‚ blood flows backward and backs up into the veins near the skin. This causes the blood to pool in your lower legs. The blood can then can leak out of your veins and irritate your skin. This may cause a break in your skin and lead to stasis venous ulcer
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Chapter 12 The Lymphatic System and Body Defenses Short Answer Figure 12.1 Using Figure 12.1‚ identify the following: 1) A lymph capillary is indicated by letter __________. Answer: D Diff: 2 Page Ref: 404 2) A lymph node is indicated by letter __________. Answer: B Diff: 2 Page Ref: 404 3) The lymph duct is indicated by lettter __________. Answer: A Diff: 2 Page Ref: 404 4) Blood capillaries are indicated by letter __________. Answer: E Diff: 2 Page Ref: 404 5) Lymphatic
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Dwelling With Them 6 The apostle Peter also had counsel for married couples‚ and his words to husbands were especially pointed. He said: “Continue dwelling in like manner with [your wives] according to knowledge‚ assigning them honor as to aweaker vessel‚ the feminine one‚ since you are also heirs with them of the undeserved favor of life‚ in order for your prayers not to be hindered.” (1 Peter 3:7) The seriousness of Peter’s counsel is seen in the final words of that verse. If a husband fails to
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This paper is all about peripherally inserted central catheters (PICC) and central venous catheters. There are different types of catheters and they are used in different situations. If they are to be used properly‚ they must be maintained and cared for. If they are not maintained there are several adverse side effects that could be life threatening. Along with providing all this information‚ this paper will also instruct how to initiate a peripherally inserted central catheter and how to correctly
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When veins do not work properly‚ it is called venous insufficiency. This means that the veins are not effectively sending the blood back to the heart. The severity of venous insufficiency differs with each person. If the problem goes untreated‚ the person may feel continuous symptoms of pain‚ swelling and fatigue in the legs and ankles. If the problem is advanced there are other symptoms such as leg ulcers‚ superficial thrombophlebitis‚ spontaneous bleeding and‚ possibly‚ deep vein thrombosis. Our
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Cardiovascular System: Blood Laszlo Vass‚ Ed.D. Version 42-0007-00-01 Purpose Explain why you did this lab and what if any safety precautions needed to be followed. For this lab I had to prick my finger‚ then with the bleach solution I had to dab it and then carefully drop the blood on the slide. Once I was finished I had to take the second slide and smear the blood. I had to let the slide dry. Then I had to prick my finger again and make 3 more slides. Then I had to mix the chemical
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THE INTERPRETATION OF THE POSITIVE VENOUS PULSE.* ALBION WALTER HEWVLETT‚ M.D. (Assistant Professor of AMedicine at thze Cooper Medical College‚ San Francisco‚ Cal.) INTRODUCTION. The normal venous pulse is characterized by the presence of two main waves. The first of these‚ the a wave‚ is due to the contractioni of the right auricle‚ and immediately precedes the carotid pulse. The other‚ or v wave‚ appears in the neck in early diastole coincident with the closure of the semilunar valves
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