Where was membrane potential measured? The more stimuli per second, the greater the force generated by the muscle due to a sustained contraction. Effect of Stimulation Frequency on Contraction 2. Define the terms skeletal muscle fiber, motor unit, skeletal muscle twitch, electrical stimulus, and latent period. How does increasing muscle fiber length affect force of muscle contraction? Tables and Graphs are submitted to the laboratory report. Overhead rate is calculated base on each activity or task. What was used to measure membrane potential? At what stimulus voltage s did an action potential occur? After reaching this optimal threshold, there is a voltage above which any further increase in stimulation intensity results in no further increase in force generation. I have 15 stimuli per second and 30 stimuli per second.
Users can view data in either a graphic or tabular format. An osmometer was used to check osmolarity Water consumption measured urine output, and a finger stick. Submit completed worksheets to the faculty member. Contents: Activity 1: Enzyme Activity Activity 2: Twitch Contractions and Summation Activity 3: Recruitment and Contractions Activity 4: Generation of Action Potentials Activity 5: Blood Glucose Regulation Activity 6: Effect of Exercise on Cardiac Output Activity 7: Effect of Exercise on Arterial Pressure and Vascular Resistance Activity 8: Respiratory Volumes Activity 9: Regulation of Pulmonary Ventilation Activity 10: Influence of Fluid Intake on Urine Formation Responsibility: Connie Allen et al. As muscle fiber length increases: contraction force increases, becoming maximum at an optimal length, then decreasing at longer lengths.
Resulting in the unbalancing of ecosystems across the globe. Visit our to see our full price match policy. Dehydration does not result in diluted urine but rather in concentrated urine. This will cause reabsorption of water, giving the body more blood volume, and lower osmolality. So the value for 22. This toxin blocks exocytosis of synaptic vesicles at the neuromuscular junction. Use the division- by- sixteen method.
What was the resting membrane potential no stimulation recorded in Table 3? Controlled Variables are the temperature and stimulation voltage. Independent Variable muscle fiber length 3. Which part of the neuron was stimulated? Independent Variable Frequency of stimulation 3. The average plasma osmolality does not change with dehydration. For each of the stimulation voltages, indicate whether it was sub-threshold, threshold, or suprathreshold.
Discuss why maintaining plasma osmolality within normal limits is important. Submit completed worksheets to the faculty member. Describe what is measured as an indicator of sucrase activity and why this is an indicator of sucrase activity. Click the Assignment Files tab to submit your assignment. Both on campus and off campus online capability must be accommodated to the increase of people enrolled. In Experiment 2, explain why the membrane potential between the axon hillock and axon either changed or did not change with threshold stimulus.
Biology Forums - Study Force is the leading provider of online homework help for college and high school students. These include text, pop-up links to images and definitions and, where appropriate, animations to clarify key physiological processes. A muscle fiber will develop its greatest tension when there is an optimal zone of overlap between thick and thin filaments. Because 95 degrees is the perfect temp for optimal functioning of a mouse. Hypothesis and Predicted Outcomes If humans could find other resources that do not involve the. I have 15 stimuli per second and 30 stimuli per second.
The stimulation voltage of 400 mV was used because this value represents the threshold stimulus. At what stimulus voltage s did an action potential occur? Was the rate of increase of sucrase activity greater when sucrose concentration went from 2. For each of the stimulation voltages, indicate whether it was sub-threshold, threshold, or suprathreshold. Controlled Variables: temperature, stimulation voltage, frequency of stimulation. In this step the diradical becomes a benzhydrol radical, while the solvent molecule becomes a new radical.
Drinking alcoholic or caffeinated beverages increases urine output more than drinking an equivalent amount of water. The maximum force generated was 0. Independent Variable: stimulation voltage 3. Applicants — Require a clear induction policy and training plan taking their individual needs into account. Also, when a muscle fiber is relaxed, the Ca concentration in the sarcoplasm is very low.