Lung volumes Essays

process of ventilation. Breathing involves the movement of oxygen in and carbon dioxide out of the lungs in a cyclic pattern which alters in response to the body’s energy requirements or may be altered by health conditions. Respiration and lung function are determined primarily by the organs ability to change their size and volume in response to pressure changes within the thoracic cavity. Lung volume can be affected by many variables as described by Poiseulles law showing the relationship between

method that we used to measure the volumes difference in amount of air breathed in or out and how quickly the air is inhaled and exhaled from the mouth while breathing through a mouthpiece. In this present study, we measured the lungs volumes during normal breathing and with the maximum forced expiratory flow rates. For this experiment, we use the Phipps and bird wet spirometer to measured Tidal Volume (TV), Inspiratory Reserve Volume (IRV), Expiratory Reserve Volume (ERV), and Vital Capacity (VC).

“P1V1 = P2V2” shows that as the volume increases, the pressure of the gas decreases in proportion, as long as the temperature stays the same. The relationship between pressure and volume was first noticed by mathematician and astronomer Richard Towneley and experimenter Henry Power. Robert Boyle, a chemist and physicist, confirmed the discovery and published the results in 1662. According to science historians, Boyle’s assistant, Robert Hooke, built the experimental rig. The law is based on air

THE AFRICAN LUNGFISH Specific Purpose: To inform my audience about the African Lungfish and its characteristics. Central Idea: The characteristics of the African Lungfish can be quite misunderstood due to its name. There are many factors that make this type fish different from many that are known. INTRODUCTION I. Imagine sitting in a restaurant starving and you overhear a conversation between a group of biology travelers discussing an African Lungfish. The hunger that was once so known just

Cellular Respiration Aerobic Cellular Respiration is the process by which the cells in our body get energy to carry out their functions. Cellular respiration is necessary for all living things due to the fact that living things are made up of cells and all cells need energy to carry out their functions. It takes place in the mitochondria of mainly eukaryotic cells. Mitochondria are considered the powerhouses of cells due to their high folds of energy. During aerobic respiration, oxygen is always

7-1: How does balance impact visual weight? Balance refers to the even distribution of weight in a composition. In artwork that is a sculpture and architecture, the actual weight is material in pounds or kg. In visual weight, the apparent “heaviness” or “lightness” of the shapes and forms arranged in the composition. The visual balance in composition by three ways—symmetrical balance, asymmetrical balance or radial balance. The first type of balance is symmetry; there are several symmetrical balances

Volume Lab In this four parted lab the purpose is to use measurement and water displacement and calculations to find the volume of various objects. Part A questions were how much drops of water were needed to make 1mL the original hypothesis made was ten drops however this was proven wrong once the data in which twenty drops of water rose 10 mL of water to 11 mL of water, nineteen to rise from 11 mL to 12 ml, and finally eleven drops of water to rise from twelve mL to thirteen mL. Once the average

able to package products properly if engineers know exactly how fast the item flows out of the machinery. Solids, liquids and gases are the commonly known states of matter that consist of distinguishable physical properties. A solid has a fixed volume and shape consisting of rigid particles locked into place. Because a solid’s particles have little free space to slide past one another, solids are not easily compressible and do not flow easily. An example of a solid is a couch. A

The question is, how does a physical or chemical change affect the mass of a substance within a closed system? To respond to this question, my group did a lab to determine whether or not the mass would change or not. Our lab was to have a plastic bag containing baking soda, then add a cup of vinegar and a block of clay to the mix. We made sure to weight every element separately and then add them up for our total mass of 31 grams before the reaction. During the reaction, as soon as the vinegar was

The first measurement that was retrieved as the mass of the metal object was 24.15 g. This was repeated for a second measurement of 23.85 g, and a final measurement of 23.82 g. All three mass measurements were recorded. Moving forward, to find the volume of the metal object, the graduated cylinder

Density: A Characteristic Property I Purpose The purpose of this experiment is the density of six different substances. The way to figure this out is by finding the mass and volume of each of the substances. The hypothesis for the different experiments is that with each of the different substances and mixtures will be different depending on what they are. II Equipment The late nite lab was used to conduct this experiment. The product used were a balance, a graduated cylinder, water, Ethanol, and

3. Results and Discussion 3.1 Excess molar volume The experimental values of densities for pure components and their binary mixtures as a function of mole fraction at T = (303.15 to 313.15) K are given in Table 2. Excess molar volumes V^E were calculated from the measured values of density using the following equation: 〖 V〗^E = V_m-V_1 x_1-V_2 x_2 (1) V^E=((x_1 M_1+x_2 M_2)/ρ_m

mentions the Column volumes of Gel Filtration experiment: Void Volume (Vo), Elution Volume (Ve), Included Volume (Vi), Entire Volume (Vo + Vi), and Inert Volume (Vg). Void Volume (Vo) came out to be 1.25 ml. It was calculated by adding all the fractions that contained blue dextran. Blue Dextran was the biggest substance in size which made it impossible to fit in the available pore sizes of the beads. Void Volume represents the space between the beads in column. In addition, Elution Volume (Ve) came out

Water Olympics Lab Write Up In station one, we explored the idea of density. Density is the amount of cmpactness in an object. We used oil and water, and observed the density of each substance. when pouring the two back and forth, the oil moves slower and the water moves faster and more choppy then the vegetable oil. Seeing this, oil was presumed to be more dense, so I made a hypothesis that if testing the density of oil and water, oil is more dense than its counterpart of water. After a trial

Graphing to Determine the Density of Unknown Metals Purpose: The purpose of this lab was to graph and compare measurements of mass, volume, and density of two unknown metals. Relationships in data and physical appearances were observed and used to identify each metal. The density was shown as the slope of the graph as both were equivalent to mass divided by volume. The experimental density was then compared to the actual value and a percent error was determined. Materials: Equipment and materials

In part A of the lab we had to melt a birthday candle in a test tube until it turned into liquid wax. We held the candle over a bunsen burner for about thirty second before it was completely turned to liquid wax. Here are some important measurements of part A. Before heating the candle weighed one gram, and the test tube and beaker weigh 40.2 grams. Then after heating, the test tube, beaker, and candle weighed 41.2 grams all together. Which then means that the candle weighed one gram after heating

results tested in the lab. One significant finding of the experiment based on the data about the three cubes was the inverse relationship which was as cell size increases, the surface area to volume ratio decreases. To find the ratios, the calculation of the surface area of each cube (length x width= cm^2) and the volume of each cube (length x width x height= cm^3) was necessary. As a result, the ratio of surface area to

INTRODUCTION Density, mass divided by volume, is one of the most important characteristic of matter (Sciencing) since it affects whether objects will float or sink, thus making it hugely important for the workings of the universe and in daily live (Sciencing). All objects have density and that density can increase or decrease as the result of actions taken on the object (Sciencing), such as adding salt into a substance like water, as has been done in this particular experiment. When salt is dissolved

Density Lab Group Members: Bianca Hernandez, Felicity Do, Ana Ruiz, and Kayla Bordley Class: 115 Date Performed: 9/26/14 Date Due: 10/2/14   1.) Intro: a.) Purpose- The purpose of the lab is to discover how to measure the mass and volume of liquid and solid samples, such as water, olive oil, vegetable oil, and other solid samples, as well as using the correct number of significant figures and determining how to calculate and find the density and specific gravity of each of the substances. b.) Equipment-

physical property of matter, as each element and compound has a unique density connected with it. Density defined in a qualitative manner as the measure of the relative "heaviness" of objects with a constant volume. For gases the density may amount with the number of gas molecules in a constant volume. Helium balloon: Compare the behavior of helium filled balloon with that of an air filled balloon. Even taking into account the weight of the rubber balloon, the helium balloon floats on the air and is