A longitudinal section of a sarcomere in a relaxed state and label the Z lines, thin filaments, and thick filaments. Introduction: Sarcomere is the smallest unit of a muscle fiber. The filaments of actin and myosin are constitutively known as a sarcomere. Multiple numbers of sarcomere are joined together to form the structure of a muscle. They join together with each other in the end-to-end direction, resulting in the formation of “myofibril”.

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Answer 1

Question

Chapter 40.3, Problem 1C

Summary Introduction

To sketch: A longitudinal section of a sarcomere in a relaxed state and label the Z lines, thin filaments, and thick filaments.

Introduction: Sarcomere is the smallest unit of a muscle fiber. The filaments of actin and myosin are constitutively known as a sarcomere. Multiple numbers of sarcomere are joined together to form the structure of a muscle. They join together with each other in the end-to-end direction, resulting in the formation of “myofibril”.

Summary Introduction

To determine: The actin filaments in the given figure.

Introduction: Muscles consists of various units which constitutively results in the locomotion

of the organism. The functioning of muscles is carried out by the process of muscle contraction, which is a vast process and guided by a number of steps.

Summary Introduction

To determine: The myosin filaments in the given figure.

Introduction: Muscles consists of various units which constitutively results in the locomotion of the organism. The functioning of muscles is carried out by the process of muscle contraction, which is a vast process and guided by a number of steps. The skeletal system and muscle tissues act together to produce locomotion in an individual.

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Label the structures of the myofibril model shown with overlying sarcoplasmic reticulum

Identify the structure highlighted in green: Sarcolemma Myofibril Sarcoplasm

Using the sliding filament theory, explain (or draw) the process of sarcomere shortening. Start from the point where calcium would interact with troponin. Make sure to discuss the roles of actin, myosin, and ATP.

Answer 2

Question

Chapter 40.3, Problem 1C

Summary Introduction

To sketch: A longitudinal section of a sarcomere in a relaxed state and label the Z lines, thin filaments, and thick filaments.

Introduction: Sarcomere is the smallest unit of a muscle fiber. The filaments of actin and myosin are constitutively known as a sarcomere. Multiple numbers of sarcomere are joined together to form the structure of a muscle. They join together with each other in the end-to-end direction, resulting in the formation of “myofibril”.

Summary Introduction

To determine: The actin filaments in the given figure.

Introduction: Muscles consists of various units which constitutively results in the locomotion

of the organism. The functioning of muscles is carried out by the process of muscle contraction, which is a vast process and guided by a number of steps.

Summary Introduction

To determine: The myosin filaments in the given figure.

Introduction: Muscles consists of various units which constitutively results in the locomotion of the organism. The functioning of muscles is carried out by the process of muscle contraction, which is a vast process and guided by a number of steps. The skeletal system and muscle tissues act together to produce locomotion in an individual.

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Answer 3

Question

Chapter 40.3, Problem 1C

Summary Introduction

To sketch: A longitudinal section of a sarcomere in a relaxed state and label the Z lines, thin filaments, and thick filaments.

Introduction: Sarcomere is the smallest unit of a muscle fiber. The filaments of actin and myosin are constitutively known as a sarcomere. Multiple numbers of sarcomere are joined together to form the structure of a muscle. They join together with each other in the end-to-end direction, resulting in the formation of “myofibril”.

Summary Introduction

To determine: The actin filaments in the given figure.

Introduction: Muscles consists of various units which constitutively results in the locomotion

of the organism. The functioning of muscles is carried out by the process of muscle contraction, which is a vast process and guided by a number of steps.

Summary Introduction

To determine: The myosin filaments in the given figure.

Introduction: Muscles consists of various units which constitutively results in the locomotion of the organism. The functioning of muscles is carried out by the process of muscle contraction, which is a vast process and guided by a number of steps. The skeletal system and muscle tissues act together to produce locomotion in an individual.

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Answer 4

Question

Chapter 40.3, Problem 1C

Summary Introduction

To sketch: A longitudinal section of a sarcomere in a relaxed state and label the Z lines, thin filaments, and thick filaments.

Introduction: Sarcomere is the smallest unit of a muscle fiber. The filaments of actin and myosin are constitutively known as a sarcomere. Multiple numbers of sarcomere are joined together to form the structure of a muscle. They join together with each other in the end-to-end direction, resulting in the formation of “myofibril”.

Summary Introduction

To determine: The actin filaments in the given figure.

Introduction: Muscles consists of various units which constitutively results in the locomotion

of the organism. The functioning of muscles is carried out by the process of muscle contraction, which is a vast process and guided by a number of steps.

Summary Introduction

To determine: The myosin filaments in the given figure.

Introduction: Muscles consists of various units which constitutively results in the locomotion of the organism. The functioning of muscles is carried out by the process of muscle contraction, which is a vast process and guided by a number of steps. The skeletal system and muscle tissues act together to produce locomotion in an individual.

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Answer 5

Chapter 40.3, Problem 1C

Summary Introduction

To sketch: A longitudinal section of a sarcomere in a relaxed state and label the Z lines, thin filaments, and thick filaments.

Introduction: Sarcomere is the smallest unit of a muscle fiber. The filaments of actin and myosin are constitutively known as a sarcomere. Multiple numbers of sarcomere are joined together to form the structure of a muscle. They join together with each other in the end-to-end direction, resulting in the formation of “myofibril”.

Summary Introduction

To determine: The actin filaments in the given figure.

Introduction: Muscles consists of various units which constitutively results in the locomotion

of the organism. The functioning of muscles is carried out by the process of muscle contraction, which is a vast process and guided by a number of steps.

Summary Introduction

To determine: The myosin filaments in the given figure.

Introduction: Muscles consists of various units which constitutively results in the locomotion of the organism. The functioning of muscles is carried out by the process of muscle contraction, which is a vast process and guided by a number of steps. The skeletal system and muscle tissues act together to produce locomotion in an individual.

Answer 6

Chapter 40.3, Problem 1C

Summary Introduction

To sketch: A longitudinal section of a sarcomere in a relaxed state and label the Z lines, thin filaments, and thick filaments.

Introduction: Sarcomere is the smallest unit of a muscle fiber. The filaments of actin and myosin are constitutively known as a sarcomere. Multiple numbers of sarcomere are joined together to form the structure of a muscle. They join together with each other in the end-to-end direction, resulting in the formation of “myofibril”.

Answer 7

Chapter 40.3, Problem 1C

Summary Introduction

To sketch: A longitudinal section of a sarcomere in a relaxed state and label the Z lines, thin filaments, and thick filaments.

Introduction: Sarcomere is the smallest unit of a muscle fiber. The filaments of actin and myosin are constitutively known as a sarcomere. Multiple numbers of sarcomere are joined together to form the structure of a muscle. They join together with each other in the end-to-end direction, resulting in the formation of “myofibril”.

Answer 8

Summary Introduction

To determine: The actin filaments in the given figure.

Introduction: Muscles consists of various units which constitutively results in the locomotion

of the organism. The functioning of muscles is carried out by the process of muscle contraction, which is a vast process and guided by a number of steps.

Answer 9

Summary Introduction

To determine: The actin filaments in the given figure.

Introduction: Muscles consists of various units which constitutively results in the locomotion

of the organism. The functioning of muscles is carried out by the process of muscle contraction, which is a vast process and guided by a number of steps.

Answer 10

Summary Introduction

To determine: The myosin filaments in the given figure.

Introduction: Muscles consists of various units which constitutively results in the locomotion of the organism. The functioning of muscles is carried out by the process of muscle contraction, which is a vast process and guided by a number of steps. The skeletal system and muscle tissues act together to produce locomotion in an individual.

Answer 11

Summary Introduction

To determine: The myosin filaments in the given figure.

Introduction: Muscles consists of various units which constitutively results in the locomotion of the organism. The functioning of muscles is carried out by the process of muscle contraction, which is a vast process and guided by a number of steps. The skeletal system and muscle tissues act together to produce locomotion in an individual.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 40.1 - Compare the functions of the epithelial coverings...Ch. 40.1 - Prob. 2LO Ch. 40.1 - Prob. 1C Ch. 40.1 - Prob. 2C Ch. 40.1 - Prob. 3C Ch. 40.1 - Prob. 4C Ch. 40.2 - Compare the structure and functions of different...Ch. 40.2 - Describe the main divisions of the vertebrate...Ch. 40.2 - Prob. 5LO Ch. 40.2 - Prob. 6LO

Solution Summary: The author explains that a sarcomere is the smallest unit of muscle fiber.

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