Which of the following has an epitope? The dentist should inject the lidocaine in the nerve in the gums where the stimulus occurs to block pain perception. After you click Submit Data, the slide will automatically be placed in the biohazardous waste disposal. No, it will not affect the transport of either ion. Increasing extracellular K+ causes the membrane potential to change to a less negative value because the K+ ions diffuse out across the membrane. In order to get 5.
It was able to respond to different modalities because it is not as specialized. Which respiratory process is impaired the most by emphysema? How does this set of data compare to the data you recorded for Activity 2? Your answer: The axon was investigated in this activity. During a single twitch of a skeletal muscle You correctly answered: b. In the extracellular solution just outside the cell body 2. Students gather data, analyze results, and check their understanding all on screen. Why does surfactant affect airflow in this manner? By adding more extracellular K+ the intracellular K+ will decrease and cause the membrane potential to become less negative.
Thyrotropin-releasing The normal rat is You correctly answered: c. The best way to rapidly reinflate a person's collapsed lung is toYou correctly answered: a. The hypophysectomized Hypox rat is You correctly answered: c. 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. The results did not support the prediction. The size of the thoracic cavity increases.
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. After the student performs a step, instructions for the next step appear. Would the response at R2 after lidocaine application necessarily be zero? Just before an inspiration begins, the pressure within the intrapleural cavityYou correctly answered: b. Define inactivation as it applies to a voltage-gated sodium channel. All the above are correct. Thyroxine is You correctly answered: c.
Chlamydia trachomatis is You correctly answered: c. What lung values changed from those of the normal patient in the spirogram when the patient with emphysema was selected? The change in active force amount is completely caused by the amount of myosis bound to the actin. Drag the first slide patient A to the fluorescent microscope. Which of the following has an epitope? Therefore, the K+ ions will diffuse down its concentration gradient from a region of higher concentration to a region of lower concentration. . When the weight is heavy the speed in which the muscle lifts the weight decreases in speed at a slower velocity.
Wave summation increases the force produced in the muscle. Pain-sensitive neurons called nociceptors conduct action potentials from the skin or teeth to sites in the brain involved in pain perception. The diaphragm moves to a flattened position. Your answer: The high chemical modality induced the largest amplitude receptor potential in the olfactory receptors. A graded potential is also referred to as a local potential.
Increasing the extracellular potassium reduces the concentration gradient, and less potassium diffuses out of the neuron and into the cell. How well did the results compare with your prediction? Discuss how a change in Na+ or K+ conductance would affect the resting membrane potential. These are all great for the Review sheets! Each expiration took place over how many seconds? Your answer: By increasing the extrecellular K+ the net diffiusion of K+ out the neuron through the eak channels is reduced. Minute respiratory volume: 7,500 ml 2. When the intensity of the stimulus is increased, the size of the action potential does not become larger. Gas pressure inside the lungs is lowered. Aldosterone is primarily increasing sodium uptake and potassium secretion.
Sensory neurons respond to an appropriate sensory stimulus with a change in membrane potential that is You correctly answered: b. As the interval between the stimuli decreases, the threshold for the second action potential increased. It is also the time after an action potential when the neuron cannot fire a second action potential, no matter how intense the stimulus. Thyroxine is You correctly answered: c. 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. Why is the resting membrane potential the same value in both the sensory neuron and the interneuron? When the solute concentration gradient in the interstitial space was increased, the urine volume decreased.
You may delete these instructions before submission. 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? The diaphragm moves to a flattened position. Identify which of the stimulus modalities induced the largest amplitude receptor potential in the Pacinian corpuscle. Students are also asked to make predictions about the results for an experiment to apply what they have learned before seeing the results. Your answer: A threshold is a transmembrane potential at which an action potential begins. Submit this completed document by the assignment due date found in the Syllabus. For multiple choice questions, type the letter of the correct answer next to the corresponding question number on the answer sheet.
Your answer: The resting membrane potential depends on the intracellular and extracellular concentrations of the Na+ and K+ ions. Your answer: There weren't as many Na+ leakage channels as there were K+ leakage channels. Your answer: Depolarization triggers an action potential. To achieve an active force of 5. In this experiment you observed the effect of stimulating the isolated skeletal muscle multiple times in a short period with complete relaxation between the stimuli. Gas pressure inside the lungs is lowered. The thyroidectomized Tx rat is You correctly answered: a.