The role of calcium in muscle contraction is to detach myosin heads from actin. Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

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Answer 1

Question

Chapter 17, Problem 22Q

A.

Summary Introduction

To explain: The role of calcium in muscle contraction is to detach myosin heads from actin.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

B.

Summary Introduction

To explain: The role of calcium in muscle contraction is to spread the actin potential from the plasma membrane to the contractile machinery.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

C.

Summary Introduction

To explain: The role of calcium in muscle contraction is to expose actin filaments to myosin heads.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

D.

Summary Introduction

To explain: The role of calcium in muscle contraction is to maintain the myosin filament structure.

Introduction: Calcium ions play an important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex; thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

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Answer 2

Question

Chapter 17, Problem 22Q

A.

Summary Introduction

To explain: The role of calcium in muscle contraction is to detach myosin heads from actin.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

B.

Summary Introduction

To explain: The role of calcium in muscle contraction is to spread the actin potential from the plasma membrane to the contractile machinery.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

C.

Summary Introduction

To explain: The role of calcium in muscle contraction is to expose actin filaments to myosin heads.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

D.

Summary Introduction

To explain: The role of calcium in muscle contraction is to maintain the myosin filament structure.

Introduction: Calcium ions play an important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex; thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

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Answer 3

Question

Chapter 17, Problem 22Q

A.

Summary Introduction

To explain: The role of calcium in muscle contraction is to detach myosin heads from actin.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

B.

Summary Introduction

To explain: The role of calcium in muscle contraction is to spread the actin potential from the plasma membrane to the contractile machinery.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

C.

Summary Introduction

To explain: The role of calcium in muscle contraction is to expose actin filaments to myosin heads.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

D.

Summary Introduction

To explain: The role of calcium in muscle contraction is to maintain the myosin filament structure.

Introduction: Calcium ions play an important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex; thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

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Answer 4

Question

Chapter 17, Problem 22Q

A.

Summary Introduction

To explain: The role of calcium in muscle contraction is to detach myosin heads from actin.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

B.

Summary Introduction

To explain: The role of calcium in muscle contraction is to spread the actin potential from the plasma membrane to the contractile machinery.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

C.

Summary Introduction

To explain: The role of calcium in muscle contraction is to expose actin filaments to myosin heads.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

D.

Summary Introduction

To explain: The role of calcium in muscle contraction is to maintain the myosin filament structure.

Introduction: Calcium ions play an important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex; thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

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Answer 5

Chapter 17, Problem 22Q

A.

Summary Introduction

To explain: The role of calcium in muscle contraction is to detach myosin heads from actin.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

B.

Summary Introduction

To explain: The role of calcium in muscle contraction is to spread the actin potential from the plasma membrane to the contractile machinery.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

C.

Summary Introduction

To explain: The role of calcium in muscle contraction is to expose actin filaments to myosin heads.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

D.

Summary Introduction

To explain: The role of calcium in muscle contraction is to maintain the myosin filament structure.

Introduction: Calcium ions play an important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex; thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

Answer 6

Chapter 17, Problem 22Q

A.

Summary Introduction

To explain: The role of calcium in muscle contraction is to detach myosin heads from actin.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

Answer 7

Chapter 17, Problem 22Q

A.

Summary Introduction

To explain: The role of calcium in muscle contraction is to detach myosin heads from actin.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

Answer 8

B.

Summary Introduction

To explain: The role of calcium in muscle contraction is to spread the actin potential from the plasma membrane to the contractile machinery.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

Answer 9

B.

Summary Introduction

To explain: The role of calcium in muscle contraction is to spread the actin potential from the plasma membrane to the contractile machinery.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

Answer 10

C.

Summary Introduction

To explain: The role of calcium in muscle contraction is to expose actin filaments to myosin heads.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

Answer 11

C.

Summary Introduction

To explain: The role of calcium in muscle contraction is to expose actin filaments to myosin heads.

Introduction: Calcium ions play important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex. Thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

Answer 12

D.

Summary Introduction

To explain: The role of calcium in muscle contraction is to maintain the myosin filament structure.

Introduction: Calcium ions play an important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex; thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

Answer 13

D.

Summary Introduction

To explain: The role of calcium in muscle contraction is to maintain the myosin filament structure.

Introduction: Calcium ions play an important role in the muscle contraction. The muscle contraction in skeletal muscles is initiated when the calcium ions bind to the troponin that is linked to the actin filament. Then, calcium ion induces a change in the configuration of the troponin complex; thus, tropomyosin shifts from the actin filament to the myosin head that initiates contraction.

Answer 14

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Answer 15

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Answer 16

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Answer 17

Ch. 17 - Prob. 1Q Ch. 17 - Prob. 2Q Ch. 17 - Prob. 3Q Ch. 17 - Prob. 4Q Ch. 17 - Prob. 5Q Ch. 17 - Prob. 6Q Ch. 17 - Prob. 7Q Ch. 17 - Prob. 8Q Ch. 17 - Prob. 9Q Ch. 17 - Prob. 10Q

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