If one diffuses at a higher rate, the permeability changes. In this simulation, when the radius of the afferent arteriole was 50mm, the radius of the efferent arteriole was 0. How does this set of data compare to the data you recorded for Activity 2? How well did the results compare with your predictions? Why does the concentration of glucose in the urinary bladder become zero in these experiments? When both were absent the volume was 201. A C T I V I T Y 1 Identifying the Latent Period How long is the latent period? 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. How well did the results compare with your prediction? 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. Increasing the extracellular potassium reduces the concentration gradient, and less potassium diffuses out of the neuron and into the cell. Because depolarization is the shift in electrical potential across a plasma membrane toward 0 to mV and action potential is a rapid voltage change in which a plasma membrane briefly reverses polarity.
The substrate for amylase is Correct answer: e. If the depolarization that reaches the axon is large and suprathreshold, the result in the axon is You correctly answered:… 1586 Words 7 Pages the molecule. Aldosterone only decreases urine volume a small amount. How does this tracing compare with the other tracings you have generated? There is a high glucose concentration in the urine of a diabetic. Would the response at R2 after lidocaine application necessarily be zero? Describe the components in the blood that affect viscosity. Does the free nerve ending likely have this isoamylacetate receptor protein? Then a facilitated diffusion along the basolateral membrane.
Your answer:A collapsed lung pneumothorax is a buildup of air in the space between the lung and the chest wall pleural space. There are voltage-gated Na+ channels all along the axon b. An introduction that defines a problem, stresses its importance, and offers a brief description of the proposed solution. Explain why increasing extracellular K+ causes the membrane potential to change to a less negative value. The temperature of the solutions and the difference in concentration of the ion or molecule between the sides of the membrane 2.
Your answer: If there is a presence of 10 or more elementary bodies in a field diameter of 5 milimeters. Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels. The nerve showed a change when the voltage was increased to 3. The longer stimuli allow time for recovery and the above threshold allows the action potential to occur after the relative refractory period. Your answer: The resting membrane potential is really a potential difference between the inside of a cell and the outside of the cell across the membrane. Explain why increasing extracellular K+ causes the membrane potential to change to a less negative value.
Where should a dentist inject the lidocaine to block pain perception? Now, read through steps 3—5 before attempting to execute them. Air flowsfrom the lungs causing the collapse of the lung. B Membrane of most cells contains K+ leak channels…. Discuss how a change in Na+ or K+ conductance would affect the resting membrane potential. The olfactory receptor also contains a membrane protein that recognizes isoamylacetate and, via several other molecules, transduces the odor stimulus into a receptor potential.
Your answer: The resting membrane potential depends on the intracellular and extracellular concentrations of the Na+ and K+ ions. The results appeared to support the prediction. Gas pressure inside the lungs is lowered. Along with increase in oncotic pressure in peritubular capillaries. Discuss how a change in Na+ or K+ conductance would affect the resting membrane potential. Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels.
Since the function of red blood cells is the transport of oxygen to the cells of the body, the higher the hematocrit, the more red blood cells are available to carry… Exercise 4: Endocrine System Physiology: Activity 1: Metabolism and Thyroid Hormone Lab Report Pre-lab Quiz Results You scored 100% by answering 6 out of 6 questions correctly. The part of the neuron that was investigated in this activity was the axon. The results supported the prediction. This is what I predicted to happen. Renal mechanisms have effects on water excretion. The plasma, red and white blood cells, and platelets cause resistance as they travel through vessels.
The larger molecule will diffuse more slowly than the smaller molecule. There is a decrease in the glucose concentration. This is necessary in order to see the action potentials. There are more negative charges than positive charges just inside the membrane. What is the approximate concentration of K+ outside a cell extracellular concentration? This means more water can be reabsorbed making urine volume less and keep water balance. Explain why a change in extracellular Na+ did not alter the membrane potential in the resting neuron? A graded potential is also referred to as a local potential. Transport of the ions was faster.