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. Discuss the relative permeability of the membrane to Na+ and K+ in a resting neuron. 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. Hint: Look at the relationship of the variables in the equation. Gas pressure inside the lungs is lowered. When someone wants to solve a problem or present new… 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. Premature infants often have difficulty breathing because the amount of surfactant in their lungs isYou correctly answered: b.
True or False: In humans, glomerular capillaries can filter as much as 180 liters of filtrate in 24 hours. How well did the results compare with your prediction? Explain why a change in extracellular Na+ did not significantly alter the membrane potential in the resting neuron? Explain why a change in extracellular Na+ did not alter the membrane potential in the resting neuron?. The results appeared to support the prediction. In this simulation, you varied the number of glucose carriers. What happened to the urine concentration as the solute concentration in the interstitital space was increased? The results only supported part of the prediction.
What passive channels are likely found in the membrane of the olfactory receptor, in the membrane of the Pacinian corpuscle, and in the membrane of the free nerve ending? 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. You have not answered this question. Which of the following has the most negative voltage? Pain-sensitive neurons called nociceptors conduct action potentials from the skin or teeth to sites in the brain involved in pain perception. Which of the following statements about metabolism is false? Describe two variables that affect the rate of diffusion. The variable that affects osmotic pressure is You correctly answered: a. More ions were transported in 60 minutes.
There also appeared to be more K+ channels open. Intrinsic Pressure- Volume Control System- This maintains constant blood volume- pressure diuresis and pressure natriuresis. What effect did opening the valve have on the left lung? It decreases the net diffusion of K+. What change in membrane potential depolarization or hyperpolarization triggers an action potential? Submit this completed document by the assignment due date found in the Syllabus. This causes increase in the right atrial, right ventricular and volume. Increasing extracellular K+ causes the membrane potential to change to a less negative value because the K+ ions diffuse out across the membrane. When the radius of the afferent arteriole was 0.
They are the same as they are both passive processes and the solute can only diffuse down its concentration gradient. Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels. I would really appreciate any help that can be given. Describe how a positive result is detected in this serological test. What was the effect of increasing the voltage? Na+ channels are mostly closed. Identify which of the stimulus modalities induced the largest amplitude receptor potential in the olfactory receptors. Drag the next slide positive control to the fluorescent microscope.
What is the approximate concentration of K+ outside a cell extracellular concentration? Rename this document to include your first and last name prior to submitting, e. Explain the effect that the flow tube radius change had on flow rate. How well did the results compare with your predictions? The resting membrane potential will become less negative. This is what I predicted to happen. A costs benefits analysis that that measures the benefits of the plan against its costs. Just before an inspiration begins, the pressure within the intrapleural cavityYou correctly answered: b.
What was the effect of adding more Na+ -K+ pumps to the simulated cell? During an asthma attack You correctly answered: b. Thyroid-stimulating… Exercise 8: Chemical and Physical Processes of Digestion: Activity 1: Assessing Starch Digestion by Salivary Amylase Lab Report Pre-lab Quiz Results You scored 0% by answering 0 out of 6 questions correctly. The concentration of glucose becomes zero because when 400 glucose carriers were added, enough were added to facilitate the re-up of glucose. Your answer: By increasing the extracellular K+ the membrane potential will change to be a less negative value. Define the term threshold as it applies to an action potential.
Explain why increasing extracellular K+ causes the membrane potential to change to a less negative value. Identify which of the stimulus modalities induced the largest amplitude receptor potential in the olfactory receptors. There is a decrease in the glucose concentration. The simultaneously implementation of both arteriole rates changing caused glomerular filtration rate and low blood pressure conditions went above the baseline value. Exercise 1: Cell Transport Mechanisms and Permeability: Activity 5: Simulating Active Transport Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. How could the change in urine volume with the increase in blood pressure be viewed as being beneficial to the body? Which of the following caused a change in membrane potential from -70 to -40 in the cell body? The larger molecule will diffuse more slowly than the smaller molecule. Which of the following occurs when a hypertonic solution is added to cells? Why does the frequency of action potentials increase when the stimulus intensity increases? Which of the following distinguishes a state of unfused tetanus from a state of complete fused tetanus? The tracings traveled in the same fashion but had a higher peak of the action potential as you increased the threshold voltage 4.
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+. Less water is reabsorbed, so more urine is formed Good! We will write a custom sample essay on Physio Ex 9. Na+ would diffuse into the cell. What emergency procedure would be used to achieve this result if these were the lungsin a living person? The normal rat is You correctly answered: b. The olfactory receptor also contains a membrane protein that recognizes isoamylacetate and, via several other molecules, transduces the odor stimulus into a receptor potential. How well did the results compare with your prediction? It responded the most to a high heat stimulus at 50mv. How would the results be affected if a negative control gave a positive result? This left nothing in the unabsorbed water and became urine.
Drag the next slide patient B to the fluorescent microscope. They will stain green in red host cells. This phenomenon is known as… 1278 Words 6 Pages Exercise 7: Respiratory System Mechanics: Activity 2: Comparative Spirometry Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. Explain why increasing extracellular K+ causes the membrane potential to change to a less negative value. Negative What does it mean that the voltage just inside the membrane is negative? Explain why increasing extracellular K+ reduces the net diffusion of K+ out the neuron through the K+ leak channels? It had a peak value response of -45 mv and an amplitude response of 25 mv. How well did the results compare with your prediction? No they would be equal Does being unable to observe diffusion necessarily mean that diffusion is not taking place? Your answer:It caused the lung to collapse because the pressure in the pleural cavity is less than the intrapulmonary pressure. Your answer: Compared to the conotrol extracellular fluid, the neurotransmitter Mg2+ was released in a very small amount.