PhysioEx 9.0 is a lab simulation software that allows students to perform virtual experiments and observe physiological processes in the body. Exercise 6, titled "Cardiovascular Dynamics," is focused on the circulatory system and how it functions to transport blood throughout the body.
In this exercise, students are asked to analyze the effects of blood vessel radius and blood viscosity on blood flow and pressure. They are also asked to investigate the relationship between cardiac output and stroke volume, as well as the effects of changing heart rate on these variables.
To begin the exercise, students are given a simulation of the circulatory system in a healthy young adult. They are asked to measure the blood flow and pressure in the aorta, the main artery that carries oxygenated blood away from the heart. Students can then manipulate variables such as blood vessel radius and blood viscosity to see how these changes affect blood flow and pressure.
As students increase the radius of the blood vessels, they will observe that blood flow increases and blood pressure decreases. This is because a larger radius allows for more blood to flow through the vessel with less resistance, resulting in a decrease in pressure. Similarly, decreasing the radius of the blood vessels will result in a decrease in blood flow and an increase in blood pressure.
Blood viscosity, or the thickness of the blood, also has an effect on blood flow and pressure. Increasing blood viscosity will result in a decrease in blood flow and an increase in blood pressure, while decreasing blood viscosity will have the opposite effect. This is because thicker blood requires more energy to flow through the vessels, resulting in an increase in pressure.
In addition to manipulating blood vessel radius and blood viscosity, students can also investigate the relationship between cardiac output and stroke volume. Cardiac output is the amount of blood pumped by the heart in a given period of time, while stroke volume is the amount of blood pumped by the heart with each beat. As students increase the heart rate, they will observe that cardiac output increases while stroke volume decreases. This is because the heart is able to pump more blood in a shorter amount of time, but it is doing so with smaller individual pumps.
Overall, the PhysioEx 9.0 Exercise 6 provides a valuable learning opportunity for students to understand the complex physiological processes involved in the circulatory system. It allows students to manipulate variables and observe the effects on blood flow and pressure, as well as the relationship between cardiac output and stroke volume. This helps students gain a deeper understanding of how the circulatory system works and how it plays a crucial role in maintaining the health and well-being of the body.
Physioex Exercise 6 Activity 1
Please make sure that your answers are typed in RED. You were asked to predict what effect you thought that adding Na+ Cl- would have on the glucose I predicted that nothing would happen given that Na+CL- crosses transport rate. Increased the amount of extracellular k+ in the resting membrane potential k+ leaks out the cell and can cause positive charge to come in the cell. The chemical formula of glucose is: C6H12O6. Research shows that, in the absence of neural and hormonal influences, the SA node generates action potentials at a frequency of approximately 100 times per minute.
All the steps of excitation-contraction coupling occur 1. Which of the following processes require ATP? MWCO of the membrane, molecular weight of the ion or molecule Why do you think that the urea was not able to diffuse through the 20 MWCO membrane? ACTIVITY 4: Simulating Filtration Answers The filtration rate of Na+Cl- in the simulation was dependent on D the pore size of the membrane. Explain the effect that extreme vagus nerve stimulation had on the heart. E Simple diffusion Facilitated diffusion Filtration Osmosis Active transport Describe the significance of using 9mM sodium chloride inside the cell and 6mM potassium chloride 3 Na+ are ejected for every 2 K+ ions entering the body. Which of the membranes can it pass through? The filtrate flows from the Bowman's capsule into the renal tubule called the proximal convoluted tubule then into the loop of Henle, and finally into the distal convoluted tubule: a.
Increasing the amount of na+ did alter the membrane because it cost depolarization and leakage of cell. The term motor unit refers to c. A motor unit consists of a motor neuron and all of the muscle fibers it innervates. Using some simple multiplication and addition, determine the molecular weight of one molecule of glucose. ACTIVITY 5: Simulating Active Transport Answers In this simulation, each of the following was were required In order for active transport to D occur: sodium ions Na+ potassium ions K+ energy from ATP All of the above were required. For example, "World war II" with quotes will give more precise results than World war II without quotes.
Your answer: Sympathetic increases heart rate. It has three phases known as the latent, contraction, and relaxation phase. Photosensory neurons would respond to green light. Use an Just like a pasta strainer, the larger the pores in the metal analogy to support your statement. Complete Activities 1-4 and 6;.
Define the terms skeletal muscle fiber, motor unit, skeletal muscle twitch, electrical stimulus, and latent period. Activity 1: PhysioEx — Exercise 7 — Respiratory System Mechanics. How well did the results compare with your prediction? Submit this completed document by the assignment due date found in the Syllabus. And sodium is outside the cell. Electrical stimulus is used to control muscle contractions. Which of the following correctly matches the twitch phase with its definition? Which solute did not appear in the filtrate using any of the membranes? Get homework help and answers to your toughest questions in biology, chemistry, physics, math, calculus, engineering, accounting, English, writing help, business, humanities, and more.
The relaxation phase is the period from peak tension until the end of the muscle contraction. The electrical stimulus mimics acetylcholine release at a neuromuscular junction Review Sheet Results 1. ACTIVITY 1: Simulating Dialysis Simple Diffusion Answers The molecular weight of urea is approximately 60. Master your assignments with step-by-step solutions to countless homework questions asked and answered by our members. Describe how the sympathetic and parasympathetic nervous systems work together to regulate heart rate.
Table of Contents: PhysioEx 9.0 : :: Library Catalog Search
Wildcard Searching If you want to search for multiple variations of a word, you can substitute a special symbol called a "wildcard" for one or more letters. An action potential in a motor neuron triggers the release of which neurotransmitter? With our help, your homework will never be the same! Words: 1200 Exercise 1: Cell Transport Mechanisms and Permeability Worksheet Student Name: Student ID Student instructions: Follow the step-by-step instructions for this exercise found in your lab manual and record your answers in the spaces below. Describe one way in which osmosis is similar to simple diffusion; describe one way in which it is Both are passive processes, osmosis differs in that it diffuses different. Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. My prediction was on par.
At the threshold stimulus, do sodium ions start to move into or out of the cell to bring about the membrane depolarization? Search Tips Phrase Searching You can use double quotes to search for a series of words in a particular order. ACTIVITY 3: Simulating Osmotic Pressure Answers True or False: Osmosis is considered a type of passive transport, i. The entire process is called the excitation contraction coupling. If your book is not available on EZBorrow, you can request it through ILLiad ebooks unavailable. My predictions came out the way I believed it to be.
A skeletal muscle twitch is a. Use ILLiad for articles and chapter scans. Explain in your own words why increasing the pore size increased the filtration rate. The graded depolarization in the skeletal muscle fiber that is elicited in response to one action potential from the motor neuron is called c. Potassium more concentrated inside the cell because of its equilibrium potential that attract k+ because of its negative charge. The end plate potential triggers a series of events that results in the contraction of a muscle cell.