PhysioEx 9.0 is a laboratory simulation software that allows students to perform virtual experiments and activities related to physiology. Exercise 4, Activity 3 specifically deals with studying the effect of adrenaline on heart rate.
In this activity, students are asked to observe the effects of adrenaline on the heart rate of a frog. The experimental setup consists of a frog heart that is connected to a force transducer and a computer. The computer records the changes in the heart rate in response to the injection of adrenaline.
The results of the experiment show that adrenaline has a stimulatory effect on the heart rate of the frog. Upon injection of adrenaline, the heart rate increases significantly and then returns to its baseline value after a few minutes. This demonstrates the role of adrenaline as a hormone that helps to increase heart rate in response to stress or physical activity.
One of the key learning objectives of this activity is to understand the role of hormones in regulating physiological processes in the body. Adrenaline is a hormone that is released by the adrenal gland in response to stress or physical activity. It acts on the heart and other organs to increase their activity, which helps the body to respond to the demand for increased energy.
Another important learning objective of this activity is to understand the relationship between the concentration of hormones and their physiological effects. The results of the experiment show that the higher the concentration of adrenaline, the greater the increase in heart rate. This demonstrates the dose-response relationship between hormones and their physiological effects.
In conclusion, Exercise 4, Activity 3 in PhysioEx 9.0 is a valuable learning tool for students studying physiology. It allows them to understand the role of hormones in regulating physiological processes and the relationship between hormone concentration and physiological effects.
PhysioEx 9.0 Exercise 4 review sheet answers
Your answer: When Ca2+ ions were added to the extracellular fluid, a small amount of neurotransmitter was released. There is no neurotransmitter release from the axon terminal when there are no calcium ions in the extracellular solution. How does this change correlate to changes in the nerve? Follow the step-by-step instructions for this exercise found in your text and record your answers in the spaces below. . Submit this completed document by the assignment due date found in the Syllabus. Experiment Re- sults Predict Questions Sensory … PhysioEx Exercise 3 Activity 9.
Do you see any kind of response on the oscilloscope screen? Your answer : b. Physioex 90 Exercise 3 Activity 4 Answers Date. Your answer : d. Your answer: Depolarization causes changes in the membrane potential by sodium rushing in the interior of the cell. Skeletal muscles are connected to bones by Your answer : c. How well did the results compare with your prediction? The normal rat is You correctly answered: a. Only a few were released with low Ca2+.
Exercise 3: Neurophysiology of Nerve Impulses Worksheet Assignment Due: Week 4 Student instructions: Follow the step-by-step instructions for this exercise found in your text and record your answers in the spaces below. How does Mg2+ block the effect of extracellular calcium on neurotransmitter release? Its the level of stimulation needed to trigger a neural impulse. If you are using mobile phone, you could also use menu drawer from browser. For the thyroidectomized rats the hormones missing will be triiodothyronine and thyroxine. The experiment produced this result. Your answer: The trigger zone was investigated this is where the axon hillock and initial segment meet. This depolarization would occur if neurons were damaged.
How well did the results compare with your predictions? Your answer: Because the exocytosis of the synaptic vesicles is Ca2+- dependent, when the extracellular fluid contained no Ca2+, no neurotransmitter was released. It will not diffuse through the 20 MWCO membrane because it does not ionize. Calculate the oxygen consumption per hour for this rat using the following equation. Your answer: My prediction was correct. Why did the metabolic rates differ. The tracing travel in the same fashion but the tracing were different with an increase threshold voltage 4.
Here is what I had. You scored 100 by answering 4 out of 4 questions correctly. Normal rat … Activity 3: Hormone Replacement Therapy. Less negative than the resting membrane potential. Discuss the relative permeability Premium Action potential Physioex 9 exercise 1 through the 20 MWCO membrane? You correctly answered: The action potential had to propagate from R1 to R2. Activity 1: Metabolism and Thyroid Hormone.
Give one possible explanation for this. No urine was collected which indicates no fluid flows through the nephron. Tubule fluid osmolarity will always be the greatest in which of these locations? How well did the results compare with your prediction? The normal rat will become hyperthyroidic and develop a goiter. What was the threshold voltage Free Action potential Axon Nerve PhysioEx 9. You correctly answered: be depolarized to values near or above threshold voltages. Human Physiology Laboratory Biol 3120 Pex 09 04 Physio Ex 9 1 Physiology This Or That Questions University Of Houston Title: Human Physiology Laboratory Biol 3120 Pex 09 04 Physio Ex 9 1 Physiology This Or That Questions University Of Houston Format: eBook Number of Pages: 158 pages Physioex 9. Calculate the oxygen consumption per hour for this rat using the following equation.
Your answer: Intracellular and extracellular recordings of the action potential are equally difficult. Neurophysiology of Nerve Impulses Activity 4. Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels. The normal rat will become hyperthyroidic and develop a goiter. Your answer: My prediction was the same as the answer.
Physioex Exercise 3 Lab And Review Sheet Activity 3. I had trouble with these so I found the answers worth sharing : 1. Now that you have calculated the oxygen consumption per hour for this rat, you can calculate the metabolic rate per kilogram of body weight with the following equation note that you need to convert the weight data from grams to kilograms to use this equation. Cellulose and starch are both You correctly Free Enzyme. Submit this completed document by the assignment due date found in the Syllabus.