The mechanism of malignant hyperthermia involves an excessive opening of the ryanodine receptor channel, with massive...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
The mechanism of malignant hyperthermia involves an excessive opening of the ryanodine receptor channel, with massive release of Ca2+ from the sarcoplasmic reticulum into the cytosol of skeletal muscle cells. The rate of Ca²+ release is so great that sarcoplasmic reticulum Ca2+-ATPase pumps are unable to work fast enough to re-sequester it. Review the steps in muscle contraction with attention to Ca²+ handling by dragging each step of muscle contraction given at left to the proper position depicted in the figure. Rising intracellular levels of Ca²+ facilitate binding to troponin and opening of myosin binding sites. Action potential cessation in the sarcolemma allows Ca²+-ATPase pumps to re-sequester Ca²+ in the SR. Voltage sensors in the T- tubule mechanically activate ryanodine receptors in the terminal cisternae. Cross-bridge formation and cycling in the continued presence of ATP and Ca²+ generates tension. Decreasing cytosolic Ca²+ levels cause unbinding from troponin and restoration of blocked myosin binding sites. Action potentials traveling along the sarcolemma arrive at and continue along and into the T-tubules. Reset The mechanism of malignant hyperthermia involves an excessive opening of the ryanodine receptor channel, with massive release of Ca2+ from the sarcoplasmic reticulum into the cytosol of skeletal muscle cells. The rate of Ca²+ release is so great that sarcoplasmic reticulum Ca2+-ATPase pumps are unable to work fast enough to re-sequester it. Review the steps in muscle contraction with attention to Ca²+ handling by dragging each step of muscle contraction given at left to the proper position depicted in the figure. Rising intracellular levels of Ca²+ facilitate binding to troponin and opening of myosin binding sites. Action potential cessation in the sarcolemma allows Ca²+-ATPase pumps to re-sequester Ca²+ in the SR. Voltage sensors in the T- tubule mechanically activate ryanodine receptors in the terminal cisternae. Cross-bridge formation and cycling in the continued presence of ATP and Ca²+ generates tension. Decreasing cytosolic Ca²+ levels cause unbinding from troponin and restoration of blocked myosin binding sites. Action potentials traveling along the sarcolemma arrive at and continue along and into the T-tubules. Reset
Expert Answer:
Answer rating: 100% (QA)
Answer Steps in order 1 Action potentials traveling along the ... View the full answer
Related Book For
Thermodynamics An Engineering Approach
ISBN: 978-0073398174
8th edition
Authors: Yunus A. Cengel, Michael A. Boles
Posted Date:
Students also viewed these law questions
-
Research indicates that the uncertainty surrounding new ventures is so great that it usually takes a company years after launching the venture to reasonably estimate the ventures future...
-
Each gram of mammalian skeletal muscle consumes ATP at a rate of about 1 Ã 10-3 mol/min during contraction. To bridge the short interval between the moderate demand for ATP met by aerobic...
-
Intracellular concentrations in resting muscle are as follows: fructose-6-phosphate, 1.0 mM; fructose-1,6-bisphosphate, 10 mM; AMP, 0.1 mM; ADP, 0.5 mM; ATP, 5 mM; and Pi , 10 mM. Is the...
-
1. List five line coding schemes discussed in this book. 2. Define block coding and give its purpose. 3. Define scrambling and give its purpose. 4. Compare and contrast PCM and DM 5. What are the...
-
Collins Systems, Inc., is trying to develop an asset-financing plan. The firm has $300,000 in temporary current assets and $200,000 in permanent current assets. Collins also has $400,000 in fixed...
-
A random sample has been taken from a normal distribution and the following confidence intervals constructed using the same data: (37.53, 49.87) and (35.59, 51.81) (a) What is the value of the sample...
-
Amtran Enterprises lost its entire inventory in a hurricane that occurred on May 31, 2010. Over the past five years, gross profit has averaged 32% of net sales. The companys records reveal the...
-
Imagine that you are holding 5,000 shares of stock, currently selling at $40 per share. You are ready to sell the shares but would prefer to put off the sale until next year for tax reasons. If you...
-
Assume that the actual dividend yield is 4.0% for the S&P 500 index. i) Calculate the theoretical equilibrium futures price for the June 2020 E-mini S&P 500 stock index futures contract. ii) What is...
-
On January 1, 2022, Mobile Technology, Incorporated issued $850,000 of $1,000 par value, 6%, 6-year bonds. Interest is payable semiannually each January 1 and July 1 with the first interest payment...
-
Presented below are three revenue recognition situations. A: Groupo sells goods to MTN for $1,000,000 payment due at delivery. B: Groupo sells goods on account to Griffons for $800,000 payment due in...
-
Figure 16.1 Source regions for air masses that influence North America. mP Maritime polar Cool, humid mT Maritime tropical Warm, humid cP Continental polar Cold, dry CT Continental tropical Hot,...
-
A boy of mass 48 kg climbs up a ladder until he is 3.4 m above the ground. How much gravitational potential energy has he gained? 5pts
-
A study investigating the relationship between study time and GPA is interested in determining whether these two variables are independent of each other Data are below. Compute the test statistic....
-
This question is about (Samsung). Analyze the customer journey for what is working and what isn't With that objective in mind, I want you to identify: Which parts of the customer journey seem to be...
-
Bonita Company wrote checks totaling $25630 during October and $27915 during November. $24340 of these checks cleared the bank in October, and $27460 cleared the bank in November. Assuming that there...
-
Figure 1 Hiring Cost: RM200 per worker Layoff Cost: RM350 per worker Regular Pay: RM1050 per worker per month Overtime pays: 1.2 times of regular pay Sub-Contract: RM150 per unit Normal Production...
-
Design and describe an application-level protocol to be used between an automatic teller machine and a bank's centralized computer. Your protocol should allow a user 's card and password to be...
-
Helium gas enters an adiabatic nozzle steadily at 500C and 600 kPa with a low velocity, and exits at a pressure of 90 kPa. The highest possible velocity of helium gas at the nozzle exit is (a) 1475...
-
How should a house be designed to receive solar heat for (a) Winter-dominated (b) Summer-dominated climates? Why?
-
A 68-kg man whose average body temperature is 39oC drinks 1 L of cold water at 3oC in an effort to cool down. Taking the average specific heat of the human body to be 3.6 kJ/kgoC, determine the drop...
-
During the year to 31 March 2024, a company which qualifies as medium-sized spends 180,000 on research and development. This is qualifying expenditure under the R&D tax relief scheme. Explain the...
-
Identify the accounting periods relating to the following periods of account: (a) year to 30 November 2023 (b) 1 October 2022 to 31 July 2023 (c) 1 January 2024 to 31 January 2024 (d) 33 months to 31...
-
Visit Transparency Internationals website and check to see how the CPI Index for countries listed in Exhibits 5.4 and 5.6 has changed. After searching TIs databank, explain why the changes have...
Study smarter with the SolutionInn App