After the voltage inside a section of an axon has rapidly increased from –55 mV to...
After the voltage inside a section of an axon has rapidly increased from –55 mV to +30 mV, the sodium gates: a. immediately close, b. fly open, c. attach to a receptor, or Disperse
Homework Answers
The correct answer is Option A. After the voltage inside a section of an axon has rapidly increased from –55 mV to +30 mV, the sodium gates immediately close.
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After the voltage inside a section of an axon has rapidly
increased from –55 mV to...
6|EXAM 2 44. The giant axon found innervating the muscle of the squid mantle is able to rapidly transmit nervous st...
6|EXAM 2 44. The giant axon found innervating the muscle of the squid mantle is able to rapidly transmit nervous stimuli due to the fact that it A. has a higher than normal concentration of voltage gated Na+ and K+ channels in its axon B. has a larger diameter than most neurons, increasing the transmission rate of the signal C. has a higher concentration of Na'/ K pumps, allowing for increased rates of recovery from each stimulus event D.both b...
Section 1 Answer the multiple-choice questions 1-46 on the scantron. 1. Rapid impulse conduction from "node" to "node" (node of Ranvier) is called: A) spatial propagation. B) salt...
Section 1 Answer the multiple-choice questions 1-46 on the scantron. 1. Rapid impulse conduction from "node" to "node" (node of Ranvier) is called: A) spatial propagation. B) saltatory propagation. C) divergent propagation. D) synaptic transmission. E) continuous propagation. 2. Nerve cells control skeletal muscles by using A) the cranial nerves only B) plasma cells C) the spinal nerves only D) electrical impulses E) none of the above 3. The term "voltage regulated" channels means that the membrane ion channels open...
a) 1/RmCm b) Cm/Rm c) RmCm d)Rm/Cm After the switch has been closed for a long...
a) 1/RmCm
b) Cm/Rm
c) RmCm
d)Rm/Cm
After the switch has been closed for a long time, so that the capacitor is completely charged, the switch then opens so that the capacitor discharges through the membrane resistor. This models "repolarization" of the axon. Here, after the potential of the inside the axon as compared to the outside becomes quite large and positive, the membrane becomes more permeable to potassium ions, which then rush from the inside of the axon (top...
25. A woman runs a marathon in 30°C weather and replaces all volume lost in sweat by drinking dis...
25. A woman runs a marathon in 30°C weather and replaces all volume lost in sweat by drinking distilled water. After th A) decreased total body water (TBW) B) decreased haematocrit C) decreased intracellular fluid (ICF) volume e marathon, she will have decreased plasma osmolarity increased intracellular osmolarity 26. Which of the following ions has a higher concentration in intracellular fluid (ICF) than in extracellular fluid (ECF)? C1 D) HC03 E) Ca2+ 27. One gram of mannitol was injected into...
17. The price of candy bars sold from vending machines at the Duluth airport has increased...
17. The price of candy bars sold from vending machines at the Duluth airport has increased by 50%. If the same number of candy bars are sold after the price increase this means: a. people flying from Duluth do not have good nutritional information. b. candy bar purchases represent a large fraction of travelers' budgets. c. there are few other places to purchase candy bars at the airport. d. the price elasticity of demand for candy bars is equal to...
Problem2 (a) Suppose outside temperature is 55 °F while the temperature inside a building is 72 F. The building is heated but not air conditioned, so the partial pressure of water vapor is the sa...
Problem2 (a) Suppose outside temperature is 55 °F while the temperature inside a building is 72 F. The building is heated but not air conditioned, so the partial pressure of water vapor is the same both inside and outside the building. Finally, suppose the dew point outside is 40°F What is the dew point inside? What are the relative humidities inside and outside the building? (We are most comfortable if relative humidity is between 30% and 50%-This question shows why...
This section has four parts to it. A) Warren Buffet wants to invest in Apple. He...
This section has four parts to it. A) Warren Buffet wants to invest in Apple. He feels their stock is going to keep going up. So when he saw their price drop, he acquires 100,00 shares on the open market, on January 3rd, at a cost of $142 per share. He doesn't plan to sell the shares in the near future. What is the journal entry to record this? B) On January 23, 2019, Apple declared a $0.73 dividend per...
Chapter 11. Vitamins, Minerals and Herbs 59 Case Study A Georgia Reed, a 55-year-old woman is diagnow ah neumonia a...
Chapter 11. Vitamins, Minerals and Herbs 59 Case Study A Georgia Reed, a 55-year-old woman is diagnow ah neumonia and dehydration. Her health history states that she has had no inte o intake for the last two days. Her physician has ordered an antibiotic for the pneumonia and 0.9% normal saline in 5 destrose with 30 mEq KCL liter at 125 ml/h 1. As a health care professional, which of these are obtained from Georgia would concern you in relation...
Q2) A canal of trapezoidal section has bed width of 8 m and bed slope of...
Q2) A canal of trapezoidal section has bed width of 8 m and bed slope of 1 in 4000. If the depth of flow is 2.4 m and side slopes of the chamel are 1 horizontal to 3 vertical, determine the average flow velocity and the discharge carried by the channel. Also compute the average shear stress at the channel boundary. Take value of Chezy's constant = 55. Q3) 6.11. A power canal of trapezoidal section has to be excavated...
change pas channels in the volta t ive protein to change shape. This A of the...
change pas channels in the volta t ive protein to change shape. This A of the S l e terminal siste oplasmic reticum calcio p r eneule warcoplasm reticulum sodium ions m o nster transverse tubules sarcolemma: calcium ions Saroplasmic reticum: triadsarcolemma: calcium ions sons bind to This causes a change in shape and exposing C D E Calcium vesicle tylcholine action potential Sodium sarcolemma calcium on myosin heads Sodium sacoplasmic reticulum calcium ions actin 15. An attaches to exposed...
6|EXAM 2 44. The giant axon found innervating the muscle of the squid mantle is able to rapidly transmit nervous stimuli due to the fact that it A. has a higher than normal concentration of voltage gated Na+ and K+ channels in its axon B. has a larger diameter than most neurons, increasing the transmission rate of the signal C. has a higher concentration of Na'/ K pumps, allowing for increased rates of recovery from each stimulus event D.both b...
Section 1 Answer the multiple-choice questions 1-46 on the scantron. 1. Rapid impulse conduction from "node" to "node" (node of Ranvier) is called: A) spatial propagation. B) saltatory propagation. C) divergent propagation. D) synaptic transmission. E) continuous propagation. 2. Nerve cells control skeletal muscles by using A) the cranial nerves only B) plasma cells C) the spinal nerves only D) electrical impulses E) none of the above 3. The term "voltage regulated" channels means that the membrane ion channels open...
a) 1/RmCm
b) Cm/Rm
c) RmCm
d)Rm/Cm
After the switch has been closed for a long time, so that the capacitor is completely charged, the switch then opens so that the capacitor discharges through the membrane resistor. This models "repolarization" of the axon. Here, after the potential of the inside the axon as compared to the outside becomes quite large and positive, the membrane becomes more permeable to potassium ions, which then rush from the inside of the axon (top...
25. A woman runs a marathon in 30°C weather and replaces all volume lost in sweat by drinking distilled water. After th A) decreased total body water (TBW) B) decreased haematocrit C) decreased intracellular fluid (ICF) volume e marathon, she will have decreased plasma osmolarity increased intracellular osmolarity 26. Which of the following ions has a higher concentration in intracellular fluid (ICF) than in extracellular fluid (ECF)? C1 D) HC03 E) Ca2+ 27. One gram of mannitol was injected into...
17. The price of candy bars sold from vending machines at the Duluth airport has increased by 50%. If the same number of candy bars are sold after the price increase this means: a. people flying from Duluth do not have good nutritional information. b. candy bar purchases represent a large fraction of travelers' budgets. c. there are few other places to purchase candy bars at the airport. d. the price elasticity of demand for candy bars is equal to...
Problem2 (a) Suppose outside temperature is 55 °F while the temperature inside a building is 72 F. The building is heated but not air conditioned, so the partial pressure of water vapor is the same both inside and outside the building. Finally, suppose the dew point outside is 40°F What is the dew point inside? What are the relative humidities inside and outside the building? (We are most comfortable if relative humidity is between 30% and 50%-This question shows why...
Chapter 11. Vitamins, Minerals and Herbs 59 Case Study A Georgia Reed, a 55-year-old woman is diagnow ah neumonia and dehydration. Her health history states that she has had no inte o intake for the last two days. Her physician has ordered an antibiotic for the pneumonia and 0.9% normal saline in 5 destrose with 30 mEq KCL liter at 125 ml/h 1. As a health care professional, which of these are obtained from Georgia would concern you in relation...
Q2) A canal of trapezoidal section has bed width of 8 m and bed slope of 1 in 4000. If the depth of flow is 2.4 m and side slopes of the chamel are 1 horizontal to 3 vertical, determine the average flow velocity and the discharge carried by the channel. Also compute the average shear stress at the channel boundary. Take value of Chezy's constant = 55. Q3) 6.11. A power canal of trapezoidal section has to be excavated...
change pas channels in the volta t ive protein to change shape. This A of the S l e terminal siste oplasmic reticum calcio p r eneule warcoplasm reticulum sodium ions m o nster transverse tubules sarcolemma: calcium ions Saroplasmic reticum: triadsarcolemma: calcium ions sons bind to This causes a change in shape and exposing C D E Calcium vesicle tylcholine action potential Sodium sarcolemma calcium on myosin heads Sodium sacoplasmic reticulum calcium ions actin 15. An attaches to exposed...
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