Once more alkali is added to this, the solution will begin to increase again in pH, going up to 12 – 14, and being blue/purple in colour through testing with indicator. This would be because there would then be more OH- ions. Hypothesis and prediction: Concentration of an acid affects the pH during a titration. As the concentration of the acid increases, I predict that the volume of alkali needed to change the pH to reach an end point will also increase. I also predict that doubling the concentration of acid will require double the amount of alkali to reach an end point.
Examples may include physical activities that make your heartbeat faster and more powerful, and this can raise your blood pressure to meet the added demands of activity. However, if your blood pressure reaches abnormally high levels and stays high, then you could be considered to have high blood pressure (HSP). High blood pressure is also called hypertension. High blood pressure in the simplest terms means the increase of blood pressure due to the malfunctioning of one or several of the organs responsible for maintaining normal blood pressure. This malfunctioning may have many causes: an increased pumping of the blood by the heart; an excess of volume of the blood improperly excreted by the kidney; an excess of hormones able to increase blood pressure; and constriction of the blood vessels.
Human Arterial Pressure and Pulse Rate Anatomy and Physiology 204 October 25, 2011 Introduction: Blood Pressure (BP) is the measured force per unit area exerted on a blood vessel wall (Marieb, 2010). The more force the blood puts on the blood vessel, the higher the blood pressure (Marieb,2010).Three important factors that affect (BP) are Cardiac output (CO) , Peripheral Resistance (PR) and blood volume (Marieb,2010). Venous return is enhanced by a respiratory movements and the external pressure of contracting skeletal muscle (Marieb, 2010). The purpose of this lab is to investigate how body postural position, exercise and cognitive stress affect arterial blood pressure and pulse rate (Marieb, 2010). It is expected that the subject sitting for three minutes and then suddenly standing will have a decrease in BP and a decrease in HR (Marieb,2010) For part 2 it is expected that both subject A and subject B will have increases in (HR) and (BP) however will not exceed the baseline (Marieb,2010) For part 3, when asked to spell words forward and backward it is expected that the subject’s (HR) and (BP) will increase HR because of the sympathetic nervous system stimulation by the hypothalamus (Marieb, 2010).
(2) Concentration. An increase in concentration the greater and faster the reaction. This is because if the solution is more concentrated, it will increase the number of molecular collisions. (3) Surface area. If the solid reactant is crushed up into smaller pieces, it will increase the total surface areas, which means there are more particles to react with the other reactant in the solution.
More nutrients are used and body temperature rises. To perform as efficiently as possible the cardiovascular system must regulate these changes and meet the body’s increasing demands. The respiratory system has different affects to exercising. When you exercise, your body has an increased need for oxygen. The muscles working in your body need oxygen in order to function, as the heart responses by pumping out more oxygenated blood to your muscles, the respiratory system also makes adjustments to help meet the demands of the body during exercise.
BLOOD DOPING Blood doping is an illicit method of improving athletic performance by artificially boosting the blood's ability to bring more oxygen to muscles. In many cases, blood doping increases the amount of hemoglobin in the bloodstream. Hemoglobin is an oxygen-carrying protein in the blood. So increasing hemoglobin allows higher amounts of oxygen to reach and fuel an athlete's muscles. This can improve stamina and performance, particularly in long-distance events, such as running and cycling.
Because the rate of reaction refers to how quickly the reactants are used up or how quickly the products are formed, one method is to measure the volume of gas given off, the more gas given off per time interval results faster reactions.Question: Will the changes in substrate concentration affect the rate of anaerobic reaction? Why or why not? What are the independent variable and dependent variable in this lab activity? What are some other controlled variables? Hypothesis: If substrate concentrations are changed, then as the concentration increase, the rate of anaerobic reaction will also increase, because the increase of the reactant concentration means there are more reactant particles, and there is a greater chance for these particles to collide and let reaction happen.
Another short term side effect is increased heart rate. When your heart beat increases it usually indicates that it is requiring more oxygen and therefore the heart has to work extremely hard. Your cardiac muscles blood flow is reduced due to that. Increased heart rate is your body panic mechanism. This is also the reason many marijuana users tend to be paranoid.
Blood Pressure Blood pressure is the force created by the heart as it pushes blood into the arteries and the circulatory system. When the heart pumps, it causes blood to flow through the arteries and into the arterioles. As the blood goes through the arterioles, the arterioles either contract or expand altering both the amount of blood flow and the resistance to blood flow. If the arterioles remain in a contracted form, they create high blood pressure. The heart must then pump harder because the arterioles are exerting a greater resistance to blood flow.
My hamstrings don’t tighten up as quickly now when engaging in activities that required the extension of them. With increased muscular strength, regarding to the core for example, I have obtained better posture, something that will benefit me years to come. Pilates has helped with my level of physical activity which has in return increased the circulation of blood flow throughout my body. This allows for better oxygen flow and simultaneously better functioning of the brain, a key element in Pilates (mental strength). Pilates calls for an increased heart rate; therefore, the amount of calories burns increases, helping me to lose weight.