Which of the following is the initial event in the mechanical contraction process (the 'C' part of E-C coupling, beginn...
Homework Answers
Add Answer to:
Which of the following is the initial event in the mechanical contraction process (the 'C' part of E-C coupling, beginn...
Put these steps in neuromuscular junction synaptic transmission and excitation-contraction coupling in chronological order. A. Ryanodine...
Put these steps in neuromuscular junction synaptic transmission and excitation-contraction coupling in chronological order. A. Ryanodine receptors open B. Voltage-gated Na+ channels open in the muscle cell membrane near the neuromuscular junction C. Tropomyosin rotates into the groove of the thin filament (out of the way of the myosin binding site) D. Depolarization of motoneuron axon terminal E. Ca2+ dissociates from troponin F. [Ca2+] rises in the muscle cell cytoplasm G. An EPSP occurs in the muscle cell H. Myosin...
Regarding the neuromuscular junction... a. Depolarization of the presynaptic membrane directly causes voltage-gated calcium channels in...
Regarding the neuromuscular junction... a. Depolarization of the presynaptic membrane directly causes voltage-gated calcium channels in the membrane to open. b. Action potentials in the sarcolemma directly cause calcium channels to open. c. Action potentials in the sarcoplasmic reticulum indirectly cause the calcium ATPase pump to function, if ATP is present. d. both a) and b) are correct, and c) is incorrect e. a), b) and c) are all correct 2) Following ATP hydrolysis by myosin, which steps occur during...
1.During skeletal muscle contraction, the following occurs except A)ATP hydrolysis directly causes the movement of the...
1.During skeletal muscle contraction, the following occurs except A)ATP hydrolysis directly causes the movement of the myosin head to cause a power stroke B)When the myosin head releases a phosphate, it can bind actin C)When a new ATP binds to a myosin head, it releases actin D)ATP hydrolysis activates the myosin head so it can bind actin E)When the myosin head binding actin releases ADP, it moves to create the power stroke 2.During skeletal muscle contraction, the length of the...
13. During skeletal musele contraction, whet substance does the sarcoplasmic reticulum store and release? A. acetyicholine...
13. During skeletal musele contraction, whet substance does the sarcoplasmic reticulum store and release? A. acetyicholine B. sodium D. calcium 34. What stimalates the sarcoplasmic reticulum (SR) to release this chemical? A. the voltage change from the muscular action potential traveling down the transverse (1) tubules B. the binding of acetylcholine to ligand-gated channels in the transverse tubules C. direct stimulus from the neural action potential D, the binding of myosin to actin 35. Transverse (T) tubales are extensions of...
Directly responsible for the power stroke associated with contraction Release of O a Natt release of...
Directly responsible for the power stroke associated with contraction Release of O a Natt release of Phosphate and ADP from myosin Dhead o Binding of binding of Phosphate and ADP to actin d, head QUESTION 16 Can lead to muscle atrophy a. Limb cast b. space flight Oc.sedentary life style d. all of above QUESTION 17 Highest concentration of Car+ voltage gated channels in which a cardiac caveolae b. skeletal muscle s intercalated disk d. Smooth muscle QUESTION 18 Muscle...
Multiple choice questions-Tor tes scantron questios s In a sarcomere, cross-bridge formation occurs specifically in the...
Multiple choice questions-Tor tes scantron questios s In a sarcomere, cross-bridge formation occurs specifically in the 5. Skeletal muscle fibers are formed from embryonic cells calledwhich fuse together, making skeletal muscle cells multinucleated. 1. a. sarcomeres b. myofibrils c. myoblasts d. fascicles a. Z line. b. I band c. M line. d. H band e. zone of overlap. 6. Titin is a(n) a. elastic protein. b. thin filament protein. 2. A thin layer of connective tissue that surounds a muscle...
4. Please match each of the following structures with its correct description (4 pts) Tropomyosin Titin...
4. Please match each of the following structures with its correct description (4 pts) Tropomyosin Titin Myosin Troponin Sarcoplasmic reticulum e. elastic filament that anchors the thick myofilaments to the Z-disc complex of T-Tubules a. main protein of the thick filament, head has two binding sites one binds actir b. long, filament protein covering the myosin-binding sites on each actin molecule c. main protein of the thin myofilament, each individual protein has a high affinity d. control protein on the...
causes the sarcoplasmic retieatum of skeletal musele cells to release calcium onto the sarcomere: what he...
causes the sarcoplasmic retieatum of skeletal musele cells to release calcium onto the sarcomere: what he movement of tropomyosin off of the binding site of actin the binding of acetyleholine with its receptor the binding of caleium with troponin he movement of the action potential down the T-tubal the binding of ATP to the Ca-ATPase on the sarcoplasmic reticulum "Rigor Mortis" is caused b a. the inability of the myosin head to detach from actin b. a lack of calcium...
hat is the best description of pulmonary blood flow? A) low flow, high pressure C) high flow, low pressure B) low...
hat is the best description of pulmonary blood flow? A) low flow, high pressure C) high flow, low pressure B) low flow, low pressure D) high flow, high pressure Vhich of the following is the skeletal muscle reflex responsible for preventing excessive tension in the uscle due to overcontraction? A) joint capsule receptors C) Golgi tendon organs B) muscle spindle fibers D) autonomic reflex Vhich of the following stimulates the cells of the adrenal medulla to secrete its excitatory hormones?...
NAME SID 25. Usted below are different steps that occur during the excitation and contraction of...
NAME SID 25. Usted below are different steps that occur during the excitation and contraction of a muscle fiber. Please select the correct sequence in which these stages occur. 1) Ca2+ binds to Tropomyosin, causing a conformational change that unblocks cross-bridge binding sites. 2) The Sarcoplasmic Reticulum is depolarized, which opens up Voltage-Gated Channels that release Ca2+ into the cytoplasm. 3) The Action Potential then travels along the cell membrane and down transverse tubules that extend into the muscle fiber....
13. During skeletal musele contraction, whet substance does the sarcoplasmic reticulum store and release? A. acetyicholine B. sodium D. calcium 34. What stimalates the sarcoplasmic reticulum (SR) to release this chemical? A. the voltage change from the muscular action potential traveling down the transverse (1) tubules B. the binding of acetylcholine to ligand-gated channels in the transverse tubules C. direct stimulus from the neural action potential D, the binding of myosin to actin 35. Transverse (T) tubales are extensions of...
Directly responsible for the power stroke associated with contraction Release of O a Natt release of Phosphate and ADP from myosin Dhead o Binding of binding of Phosphate and ADP to actin d, head QUESTION 16 Can lead to muscle atrophy a. Limb cast b. space flight Oc.sedentary life style d. all of above QUESTION 17 Highest concentration of Car+ voltage gated channels in which a cardiac caveolae b. skeletal muscle s intercalated disk d. Smooth muscle QUESTION 18 Muscle...
Multiple choice questions-Tor tes scantron questios s In a sarcomere, cross-bridge formation occurs specifically in the 5. Skeletal muscle fibers are formed from embryonic cells calledwhich fuse together, making skeletal muscle cells multinucleated. 1. a. sarcomeres b. myofibrils c. myoblasts d. fascicles a. Z line. b. I band c. M line. d. H band e. zone of overlap. 6. Titin is a(n) a. elastic protein. b. thin filament protein. 2. A thin layer of connective tissue that surounds a muscle...
4. Please match each of the following structures with its correct description (4 pts) Tropomyosin Titin Myosin Troponin Sarcoplasmic reticulum e. elastic filament that anchors the thick myofilaments to the Z-disc complex of T-Tubules a. main protein of the thick filament, head has two binding sites one binds actir b. long, filament protein covering the myosin-binding sites on each actin molecule c. main protein of the thin myofilament, each individual protein has a high affinity d. control protein on the...
causes the sarcoplasmic retieatum of skeletal musele cells to release calcium onto the sarcomere: what he movement of tropomyosin off of the binding site of actin the binding of acetyleholine with its receptor the binding of caleium with troponin he movement of the action potential down the T-tubal the binding of ATP to the Ca-ATPase on the sarcoplasmic reticulum "Rigor Mortis" is caused b a. the inability of the myosin head to detach from actin b. a lack of calcium...
hat is the best description of pulmonary blood flow? A) low flow, high pressure C) high flow, low pressure B) low flow, low pressure D) high flow, high pressure Vhich of the following is the skeletal muscle reflex responsible for preventing excessive tension in the uscle due to overcontraction? A) joint capsule receptors C) Golgi tendon organs B) muscle spindle fibers D) autonomic reflex Vhich of the following stimulates the cells of the adrenal medulla to secrete its excitatory hormones?...
NAME SID 25. Usted below are different steps that occur during the excitation and contraction of a muscle fiber. Please select the correct sequence in which these stages occur. 1) Ca2+ binds to Tropomyosin, causing a conformational change that unblocks cross-bridge binding sites. 2) The Sarcoplasmic Reticulum is depolarized, which opens up Voltage-Gated Channels that release Ca2+ into the cytoplasm. 3) The Action Potential then travels along the cell membrane and down transverse tubules that extend into the muscle fiber....
Most questions answered within 3 hours.
-
Typing The Answer Is Mandatory
Temperature is a measure of heat. More heat means that more...
asked 6 minutes ago -
An ideal gas ( 2.00 mol) is the working substance in an engine
that operates on...
asked 4 minutes ago -
Assume you are working with a standard deck of 52 cards. There
are 13 cards (2,...
asked 10 minutes ago -
A cell phone company offers two plans to its subscribers. At the
time new subscribers sign...
asked 9 minutes ago -
Circular distribution
•Suppose two birds are flying, one is flying from the north and
the other...
asked 11 minutes ago -
If tcalc = -2.78, tcrit = 1.96, H0: Mu > Mu0, and Xbar <
Mu0, what...
asked 13 minutes ago -
Write a program that reads a floating point number and prints
“zero” if the number is...
asked 14 minutes ago -
Geoff has been running a restaurant in the city for many years.
He knows from experience...
asked 24 minutes ago -
NaOH is added to a buffer solution composed of C6H5COOH and
C6H5COO―. Which of the following...
asked 16 minutes ago -
please answer all... it all counts as a discussion problem
1a qualitative data and proportions: Suppose...
asked 16 minutes ago -
Program: Write a complete C++ program that is
made of functions main() and rShift(). The rShift()...
asked 24 minutes ago -
Extended exposure can cause hearing loss. Is this
sensorineural hearing loss or conduction hearing loss? Explain....
asked 33 minutes ago