Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels. An increase in extracellular K+ 3. Thyroxine is You correctly answered: c. Negative What does it mean that the voltage just inside the membrane is negative? How does the threshold voltage change during the relative refractory period? Exercise 3: Neurophysiology of Nerve Impulses: Activity 1: The Resting Membrane Potential Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. Yes Activity 3: Effect of Restricted Air Flow on Respiratory Volumes 1. Your answer: The high chemical modality induced the largest amplitude receptor potential in the olfactory receptors. You answered: 15 elementary bodies 17.
Exercise 3: Neurophysiology of Nerve Impulses: Activity 1: The Resting Membrane Potential Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. Increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels because the membrane is permeable to K+ ions. Increasing the extracellular potassium reduces the concentration gradient, and less potassium diffuses out of the neuron and into the cell. I need help within the lab itself and the Activities. Fewer intracellular K+ ions would result in the membrane potential being less negative.
Your answer: By increasing the extracellular K+ the membrane potential will change to be a less negative value. Therefore, the K+ ions will diffuse down its concentration gradient from a region of higher concentration to a region of lower concentration. How well did the results compare with your prediction? The sodium-potassium pump is classified as a n You correctly answered: a. How well did the results compare with your prediction? A change in Na+ or K+ conductance would affect the resting membrane potential because if the membrane is permeable to a particular ion, that ion will diffuse down its concentration gradient from a region of higher concentration to a region of lower concentration. Your answer: When switching from the control extracellular fluid to the extracellular fluid with no Ca2+, no transmitters were released.
There were more pumps for transport. Why was the equilibrium for the solutes reached earlier? Describe the types of stimuli that generated an action potential. Drag the next slide positive control to the fluorescent microscope. Which of the membranes can it pass through? When a skeletal muscle is repetitively stimulated, twitches can overlap each other and result in a stronger muscle contraction than a stand-alone twitch. Master your assignments with step-by-step solutions to countless homework questions asked and answered by our members.
This is caused by the flow of ions following the concentration gradient of traveling from an area of high concentration to areas of low concentration. Your answer: Neither the Pacinian corpuscle or the free nerving have an isaomylacetate receptor protein. The infectious form of Chlamydia that is spread from person to person is the You correctly answered: d. . Stimulus frequency refers to You correctly answered: b. Activity 8 Review Sheet Results 1.
Your answer: When Mg is added to the extracellular fluid, it will be oxidized to Mg2+. The larger value obtained when more glucose carriers were present corresponds to an increase in the rate of glucose transport. You answered: 1 elementary bodies 18. Which of the following processes does not occur during inspiration? You answered: 1 elementary bodies 18. It is the period immediately following the firing of a nerve fiber when it cannot be stimulated regardless of how great a stimulus is applied. What was the effect of increasing the voltage? Discuss how a change in Na+ or K+ conductance would affect the resting membrane potential. Your answer: Increasing the extracellular K+ causes the membrane potential to change to a less negative value because when K+ ions diffuse out across the membrane they are leaving behind a net negative charge.
After you click Submit Data, the slide will automatically be placed in the biohazardous waste disposal. Increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels because the membrane is permeable to K+ ions. The transport of Na+ Cl- is simple diffusion and does not require carrier proteins. Do you think glucose is being actively transported or transported by facilitated diffusion in this experiment? After the student performs a step, instructions for the next step appear. With an appropriate stimulus, the amplitude of the receptor potential increases with stimulus intensity.
Count the number of elementary bodies you see through the microscope recall that elementary bodies stain green , enter the number of elementary bodies in the field below, and then click Submit Data to display your results in the grid. Biology Forums - Study Force is the leading provider of online homework help for college and high school students. Your answer: When a weak stimulus was applied to the sensory receptor, there was a very small response in the R1 receptor, but none at R2, R3, and R4. The results supported the prediction. Your answer: By increasing the extrecellular K+ the net diffiusion of K+ out the neuron through the eak channels is reduced.
The movement of sodium and potassium maintained by the Na+ -K+ pump You correctly answered: e. The sodium is outside, while the potassium is inside. Surface tension was sequentially decreased. If extracellular K+ is increased then the intracellular K+ will decrease. The food we ingest must be broken down to its molecular form for us to get the nutrients we need, and digestion involves a complex sequence of mechanical and chemical processes designed to achieve this goal as efficiently as possible. Your answer: If there is a presence of 10 or more elementary bodies in a field diameter of 5 milimeters.
Between the inside of the axon and. What is meant by the term graded potential? Which respiratory process is impaired the most by emphysema? Name: Exercise 7: Respiratory System Mechanics: Activity 3: Effect of Surfactant and Intrapleural Pressure on Respiration LabReportPre-lab Quiz ResultsYou scored 100% by answering 5 out of 5 questions correctly. Your answer: When the stimulus intensity increased, the number of synaptic vesicles increased with the intensity. Increasing extracellular K+ causes the membrane potential to change to a less negative value because the K+ ions diffuse out across the membrane. Why did the time between stimulation and the action potential at R1 differ for each axon? How well did the results compare with your prediction? It is dependent on the resting permeability of a membrane to the ions Activity2 Review Sheet Results 1. Sensory neurons have a resting potential based on the efflux of potassium ions as demonstrated in Activity 1. After you click Submit Data, the slide will automatically be placed in the biohazardous waste disposal.