Anemia, Blood, Blood type 950 Words 6 Pages Name: john Exercise 8: Chemical and Physical Processes of Digestion: Activity 3: Assessing Pepsin Digestion of Protein Lab Report Pre- lab Quiz Results You scored 40% by answering 2 out of 5 questions correctly. Negative What does it mean that the voltage just inside the membrane is negative? Explain one way in which facilitated diffusion is the same as simple diffusion and one way in which it differs. Your answer: A change in the extracellular Na+ did not significantly alter the membrane potential in the resting neuron because of the channels. Describe what happened when you applied a very weak stimulus to the sensory receptor. How does this tracing compare to the one that was generated at the threshold voltage? True or False: For most neurons, the concentration of Na+ and K+ ions inside and outside the cell are the primary factors that determine the resting. There are many types of microscopes that range from low—level magni ca on i. The results supported the prediction.
Did the pH level of the blood change at all during normal breathing? Predict Question 2: What will happen to the collapsed lung in the left side of the glass bell jar if you close the valve? How does the addition of both hormones affect 1 urine concentration, 2 urine volume, and 3 potassium concentration? The sodium-potassium pump is classified as a n You correctly answered: a. At what pH did you see the highest activity of salivary amylase? Your answer: When switching from the control extracellular fluid to the extracellular fluid with no Ca2+, no transmitters were released. Give one possible explanation for this. Define inactivation as it applies to a voltage-gated sodium channel. The nature of plasma membrane.
When the stimulus frequency reaches a value beyond which no further increase of. How did increasing the efferent radius affect glomerular filtration rate? The movement of sodium and potassium maintained by the Na+ -K+ pump You correctly answered: e. In the absence of other renal processes including tubular reabsorption and secretion , more glomerular filtration leads to a larger urine volume. Your answer: When K+ ions diffuse out of the membrane, it leaves behind a net negative charge, reulting in large anions that cannot cross the membrane. Why is it harder to generate a second action potential during the relative refractory period? NaCl , Urea , Glucose Which did not? Skeletal muscles are composed of hundreds to thousands of individual cells called Your answer : b. Surface tension was sequentially decreased.
. The part of the neuron that was investigated in this activity was the axon. Comparing the glomerular filtration rate and glomerular capillary pressure with the baseline values from the first run , how effective was the decreased efferent arteriole radius in compensating for the low blood pressure? Your answer: When a strong stimulus was applied to the sensory receptor, action potentials were generated at R1, R2, R3, and R4. What is the approximate concentration of K+ inside a typical cell intracellular concentration? Record this maximal voltage here:. Between the inside of the axon and.
The excess amount must be diffused to reach equilibrium. No, it will not affect the transport of either ion. They are the same as they are both passive processes and the solute can only diffuse down its concentration gradient. This is necessary in order to see the action potentials. Your answer: When the stimulus intensity increased, the number of synaptic vesicles increased with the intensity. Exercise 9: Renal System Physiology: Activity 3: Renal Response to Altered Blood Pressure Lab Report Pre-lab Quiz Results You scored 25% by answering 1 out of 4 questions correctly. No the R2 would not be zero because although after 8 and 10 seconds zero was recorded it is the sum of the action potential that is being recorded and there is still a value at the 2, 4 and 6 second recordings.
In Activity 2, how long was the latent period? How well did the results compare with your prediction? Discuss the relative permeability of the membrane to Na+ and K+ in a resting… 881 Words 4 Pages Exercise 3: Neurophysiology of Nerve Impulses: Activity 9: The Action Potential: Putting It All Together Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. Your answer: Olfactory Receptor: Na+ ion channels Pacinian Corpuscle: K+ leakage channels Free Nerve Ending: Na+ ion channel 2. It is a type of diffusion. Asthma, Lung, Lung volumes 713 Words 5 Pages necessary to begin a quality Final Lab Report. Why are fewer action potentials recorded at recording electrodes R2 when lidocaine is applied between R1 and R2? Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels.
What do you think would happen when the valve is opened if the two lungs were in a single large cavity rather thanseparate cavities? Glomerular filtration rate and pressure will rise above baseline values. Define the absolute refractory period. Physiologically, what could be the cause of a change in afferent or efferent arteriole radius? How could you adjust the afferent or efferent radius to compensate for the effect of reduced blood pressure on the glomerular filtration rate? Which respiratory process is impaired the most by emphysema? Match each of the definitions in Column A with the appropriate term in Column B. Any required worksheets will need to be completed and submitted to Moodle by midnight of the day following the lab class. If afferent arteriole radius decreases in response to an increase in blood pressure, then glomerular filtration Your answer: a. Explain why increasing extracellular K+ causes the membrane potential to change to a less negative value. 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.
Does the Pacinian corpuscle likely have this isoamylacetate receptor protein? It is different as facilitated diffusion requires the presence of a membrane-bound carrier protein in order. As theamount of air in this space increases, the pressure against the lung causes the lung to collapse. Less negative What happens to diffusion of K+ leaving the cell if you increase extracellular K+? What change in membrane potential depolarization or hyperpolarization triggers an action potential? There were more pumps for transport. In the extracellular solution just outside the cell body 2. How well did the results compare with your predictions? Skeletal muscles are connected to bones by Your answer : c.
An increased efferent arteriole radius will decrease the rate of glomerular filtration. Your answer: The axon was investigated in this activity. It is a type of diffusion. Which of the following is true of osmosis? Discuss the relative permeability of the membrane to Na+ and K+ in a resting neuron. During a single twitch of a skeletal muscle You correctly answered: b. Skeletal muscles are connected to bones by Your answer : c. Your answer:The left lungs collapsed because intrapleural and atmospheric pressure equaled.
Your answer: Depolarization triggers an action potential. My results went well compared to my prediction. How well did the results compare with your prediction? The selective plasma membrane If you put the same amount of glucose in the right beaker as in the left, would you be able to observe any diffusion? What is the approximate concentration of K+ inside a typical cell intracellular concentration? What reason can you give for the change? A pneumothorax can lead toYou correctly answered: b. How well did the results compare with your prediction? Which of the following has the most negative voltage? At which radius was the fluid flow rate the highest? Abdomen, Digestion, Digestive system 1178 Words 4 Pages Exercise 1: Cell Transport Mechanisms and Permeability: Activity 3: Simulating Osmotic Pressure Lab Report Pre- lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. Increasing extracellular K+ causes the membrane potential to change to a less negative value because the K+ ions diffuse out across the membrane.