The infectious form of Chlamydia that is spread from person to person is the You correctly answered: d. Your answer: The resting membrane potential is really a potential difference between the inside of the cell intracellular and the outside of the cell extracellular across the resting permeability of the membrane to ions and on the intracellular and extracellular concentraions of. Explain why the addition of glucose carriers had no effect on sodium or potassium transport. Your answer:If both lung were in a single large cavity rather than separate cavity when valve was open the entire lung will collapse andthere will be no extra lung to breath with and death would occur much sooner. The temperature of the solutions and the difference in concentration of the ion or molecule between the sides of the membrane 2.
After you click Submit Data, the slide will automatically be placed in the biohazardous waste disposal. Explain why increasing extracellular K+ causes the membrane potential to change to a less negative value. The lung will remain collapsed. Your answer: When switching from the extracellular fluid with no Ca2+ to the extracellular fluid with low Ca2+, onlow a few neurotransmitters were released with low Ca2+. Describe two variables that affect the rate of diffusion.
Your answer: When extracellular K+ increases, less of it K+ goes into the cell. How well did the results compare with your prediction? The sodium-potassium pump is classified as a n You correctly answered: a. Which of the following distinguishes a state of unfused tetanus from a state of complete fused tetanus? Increasing extracellular K+ causes the membrane potential to change to a less negative value because the K+ ions diffuse out across the membrane. After you click Submit Data, the slide will automatically be placed in the biohazardous waste disposal. Describe one way in which osmosis is similar to simple diffusion and one way in which it is different. Explain why a change in extracellular Na+ did not significantly alter the membrane potential in the resting neuron? Na+ would diffuse into the cell.
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. Explain why increasing extracellular K+ reduces the net diffusion of K+ out the neuron through the K+ leak channels? Discuss how a change in Na+ or K+ conductance would affect the resting membrane potential. Which of the following caused a change in membrane potential from -70 to -40 in the cell body? As far as being different, osmosis is a special form of diffusion, is the diffusion of the solvent through a selectively permeable membrane. In the serology test just performed, the fluorescence is found on the You correctly answered: c. 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. Stimulus frequency refers to You correctly answered: b.
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. The time between stimulation and the action potential differed because of the amount of myelination. Conductance would change the concentration gradient causing either Na+ or K+ to flow into or out of the cell which would change the resting membrane potential. How well did the results compare with your prediction? Negative What does it mean that the voltage just inside the membrane is negative?. Increasing extracellular K+ causes the membrane potential to change to a less negative value because the K+ ions diffuse out across the membrane. 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.
Your answer: Membrane permeability to sodium is very low because there are only a few sodium leak channels. Discuss how a change in Na+ or K+ conductance would affect the resting membrane potential. If you were to spend a lot of time studying nerve physiology in the laboratory,. Now, read through steps 3—5 before attempting to execute them. This result in a increased postitve membrane was what we predicted during the experiment. What happened to the amount of neurotransmitter release when you switched from the extracellular fluid with no Ca2+ to the extracellular fluid with low Ca2+? What is the approximate concentration of K+ inside a typical cell intracellular concentration? Your answer: A graded potential is a potential that is graded with stimulus intensity.
What type of sensory neuron would likely respond to the green light? Voltage-gated sodium channels are inactivated when the depolarized membrane potential is repolarizing and the K+ channels are open during this phase. It is a type of diffusion. Get homework help and answers to your toughest questions in biology, chemistry, physics, math, calculus, engineering, accounting, English, writing help, business, humanities, and more. Would the response at R2 after lidocaine application necessarily be zero? Explain why a change in extracellular Na+ did not alter the membrane potential in the resting neuron. The results did not support the prediction. How well did the results compare with your prediction? This phenomenon is known as… 677 Words 3 Pages Exercise 2: Skeletal Muscle Physiology: Activity 4: Tetanus in Isolated Skeletal Muscle Lab Report Pre-lab Quiz Results You scored 100% by answering 3 out of 3 questions correctly.
Each new copy of the PhysioEx 9. The results appeared to support the prediction. Which of the following statements about metabolism is false? What is the effect of axon diameter on the conduction velocity? What passive channels are likely found in the membrane of the olfactory receptor, in the membrane of the Pacinian corpuscle, and in the. The sodium channels are mostly closed during the resting state. A nerve is a bundle of axons, and some nerves are less sensitive to lidocaine. The permeability of a membrane to K+ is much higher, in which K+ ions diffuse out across the membrane because there is a greater amount within the cell.
What was the effect of increasing the voltage? In this activity a pneumothorax is automatically followed byYou correctly answered: b. The membrane of most cells, including neurons, contains passive, open, K+ leak channels. How well did the results compare with your prediction? They are the same as they are both passive processes and the solute can only diffuse down its concentration gradient. How did neurotransmitter release in the Mg2+ extracellular fluid compare to that in the control extracellular fluid? The size of the thoracic cavity increases. Your answer: Membrane permeability to sodium is very low because there are only a few sodium leak channels. You answered: 1 elementary bodies 18.
The results appeared to support the prediction. Increase or decrease the stimulus voltage and repeat the experiment. Mg will take the place of Ca as the reducing agent. Sodium chloride, urea, glucose, and albumin Simulated Facilitated Diffusion 1. The resting membrane potential will become less negative. Rename this document to include your first and last name prior to submitting, e.