Five ways water is used in the body - Your cells need water to live and survive. - Water helps remove dangerous toxins from the body. - You need water to keep your metabolism moving properly (which helps you burn calories) - IF you don't have enough water, your blood pressure can drop suddenly - Water keeps your skin hydrated - Water allows you to
3) How does digitalis slow the heart rate? Digitalis decreases the heart rate by reducing the number of electrical impulses that pass through the atrioventricular node into the lower heart chambers. Digitalis strengthens ventricular contractions so that
A. List Joseph’s risk factors and create a brief summary of the information you have so far. Identify how his risk factors would affect cellular function. The risk factors for Joseph are history of hypertension, poor diet, weight gain, stress, family history of vascular disease, and smoking. These risk factors affect cellular function by slowing down the amount of oxygen and blood flow the cells are receiving.
Lab 1 – Introduction to Science Exercise 1: The Scientific Method Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since many living organisms require oxygen to survive, it is a necessary component of water systems such as streams, lakes, and rivers in order to support aquatic life. The dissolved oxygen is measured in units of parts per million (ppm). Examine the data in Table 4 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample was taken from and then answer the questions below. QUESTIONS 1.
Caffeine & Alcohol Effect on the Water Flea Heart Rate Abstract In this study, water fleas (Daphnia magna), a semi-transparent freshwater crustacean, are used to study the effects of caffeine and alcohol on heart rate. There was a control group used along with the alcohol and caffeine to ensure the results were more accurate. The prediction was the introduction of alcohol and each increased concentration of alcohol, would decrease heart rate and the introduction and subsequent increased concentrations of caffeine would increase heart rate. The results of this experiment proved the prediction to be correct with the alcohol, but the results from the caffeine were hardly noticeable. Methods & Materials
Aquatic environments are generally split into three categories; fresh water, marine (salt water) and estuarine (a combination of salt and fresh water). The organisms that live in each of these environments have specific adaptations that allow them to respond to changes in their surrounds. Fish generally prefer either fresh water or salt water and are unable to cope with a change from one to the other. For example the cells in fresh water fish are saltier than the surrounding water, so due to osmosis (the diffusion of water through a semi-permeable membrane) water is constantly flowing into its body. For this reason fresh water fish require very efficient kidneys to remove all of the extra water, and methods of maintaining and collecting the salt lost through urination.
Background Information: * Goldfish are exothermic, meaning their body temperature depends on the water surrounding them. As the water cools/heats the first things to be affected are their digestion, respiration, and immune response. When a gold fish is exposed to extreme cold water, their body starts to shut down their non-vital organs first. They slow down their breathing because they don’t as much oxygen to bring to their working organs. As the water gets heated up, goldfish tend to become more active, and this is the time breeding is most correlated with.
He would see a decrease in urinary output as his kidneys worked to maintain volume in the body. 3. Marks blood pressure was low because his blood vessels had dilated to dissipate heat. His heart rate would vary depending upon what stage he was in. Initially it would rise in an attempt to compensate and hold the blood pressure up, but after awhile the body would tire and his heart rate would fall.
Congestive Heart Failure (CHF) Congestive Heart Failure or CHF is a severe circulatory congestion due to decreased myocardial contractility, which results in the heart’s inability to pump sufficient blood to meet the body’s needs. In general, causes can be classified according to the following: a. Volume overload may cause the right ventricle to hypertrophy to compensate for added volume. b. Pressure overload usually results from an obstructive lesion, such as COA c. Decrease contractility can result from problems such as sever anemia, asphyxia, heart block and acidemia.
"Stroke" is the general term used to describe decreased oxygen flow to an area of the brain. Common symptoms and signs of heat stroke include high body temperature, the absence of sweating, with hot red or flushed dry skin, rapid pulse, difficulty breathing, strange behavior,hallucinations,confusion,agitation,disorientation,seizure, and