The length of A and I band in the muscle fiber of frog consisting of thick filaments and thin filaments which are about 1.6µm and 1 µm long respectively and also discuss the variation in the length of A and I bands with the decrease in the length of a sarcomere. Introduction: Muscles are joined together with the help of muscle fibers. The sarcomere is the basic unit of muscle contraction. The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles.

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Answer 1

Question

Chapter 14, Problem 14.3PS

(a)

Summary Introduction

To determine: The length of A and I band in the muscle fiber of frog consisting of thick filaments and thin filaments which are about 1.6µm and 1 µm long respectively and also discuss the variation in the length of A and I bands with the decrease in the length of a sarcomere.

Introduction: Muscles are joined together with the help of muscle fibers. The sarcomere is the basic unit of muscle contraction. The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles.

(b)

Summary Introduction

To understand: The physical meaning of the H zone with a decrease in the length of ‘A’ band along with contraction of sarcomere from 3.2 µm to 2.0 µm.

Introduction: The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles. The lighter region present in the middle of ‘A’ band is called as H zone.

(c)

Summary Introduction

To dissect: The distance of H zone from Z line during muscle contraction.

Introduction: The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. ‘A’ and ‘I’ bands are unique to skeletal and cardiac muscles. The lighter region present in the middle of ‘A’ band is called as H zone. Z line is present in the middle of each ‘I’ band.

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Answer 2

Question

Chapter 14, Problem 14.3PS

(a)

Summary Introduction

To determine: The length of A and I band in the muscle fiber of frog consisting of thick filaments and thin filaments which are about 1.6µm and 1 µm long respectively and also discuss the variation in the length of A and I bands with the decrease in the length of a sarcomere.

Introduction: Muscles are joined together with the help of muscle fibers. The sarcomere is the basic unit of muscle contraction. The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles.

(b)

Summary Introduction

To understand: The physical meaning of the H zone with a decrease in the length of ‘A’ band along with contraction of sarcomere from 3.2 µm to 2.0 µm.

Introduction: The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles. The lighter region present in the middle of ‘A’ band is called as H zone.

(c)

Summary Introduction

To dissect: The distance of H zone from Z line during muscle contraction.

Introduction: The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. ‘A’ and ‘I’ bands are unique to skeletal and cardiac muscles. The lighter region present in the middle of ‘A’ band is called as H zone. Z line is present in the middle of each ‘I’ band.

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Answer 3

Question

Chapter 14, Problem 14.3PS

(a)

Summary Introduction

To determine: The length of A and I band in the muscle fiber of frog consisting of thick filaments and thin filaments which are about 1.6µm and 1 µm long respectively and also discuss the variation in the length of A and I bands with the decrease in the length of a sarcomere.

Introduction: Muscles are joined together with the help of muscle fibers. The sarcomere is the basic unit of muscle contraction. The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles.

(b)

Summary Introduction

To understand: The physical meaning of the H zone with a decrease in the length of ‘A’ band along with contraction of sarcomere from 3.2 µm to 2.0 µm.

Introduction: The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles. The lighter region present in the middle of ‘A’ band is called as H zone.

(c)

Summary Introduction

To dissect: The distance of H zone from Z line during muscle contraction.

Introduction: The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. ‘A’ and ‘I’ bands are unique to skeletal and cardiac muscles. The lighter region present in the middle of ‘A’ band is called as H zone. Z line is present in the middle of each ‘I’ band.

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Answer 4

Question

Chapter 14, Problem 14.3PS

(a)

Summary Introduction

To determine: The length of A and I band in the muscle fiber of frog consisting of thick filaments and thin filaments which are about 1.6µm and 1 µm long respectively and also discuss the variation in the length of A and I bands with the decrease in the length of a sarcomere.

Introduction: Muscles are joined together with the help of muscle fibers. The sarcomere is the basic unit of muscle contraction. The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles.

(b)

Summary Introduction

To understand: The physical meaning of the H zone with a decrease in the length of ‘A’ band along with contraction of sarcomere from 3.2 µm to 2.0 µm.

Introduction: The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles. The lighter region present in the middle of ‘A’ band is called as H zone.

(c)

Summary Introduction

To dissect: The distance of H zone from Z line during muscle contraction.

Introduction: The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. ‘A’ and ‘I’ bands are unique to skeletal and cardiac muscles. The lighter region present in the middle of ‘A’ band is called as H zone. Z line is present in the middle of each ‘I’ band.

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Answer 5

Chapter 14, Problem 14.3PS

(a)

Summary Introduction

To determine: The length of A and I band in the muscle fiber of frog consisting of thick filaments and thin filaments which are about 1.6µm and 1 µm long respectively and also discuss the variation in the length of A and I bands with the decrease in the length of a sarcomere.

Introduction: Muscles are joined together with the help of muscle fibers. The sarcomere is the basic unit of muscle contraction. The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles.

(b)

Summary Introduction

To understand: The physical meaning of the H zone with a decrease in the length of ‘A’ band along with contraction of sarcomere from 3.2 µm to 2.0 µm.

Introduction: The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles. The lighter region present in the middle of ‘A’ band is called as H zone.

(c)

Summary Introduction

To dissect: The distance of H zone from Z line during muscle contraction.

Introduction: The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. ‘A’ and ‘I’ bands are unique to skeletal and cardiac muscles. The lighter region present in the middle of ‘A’ band is called as H zone. Z line is present in the middle of each ‘I’ band.

Answer 6

Chapter 14, Problem 14.3PS

(a)

Summary Introduction

To determine: The length of A and I band in the muscle fiber of frog consisting of thick filaments and thin filaments which are about 1.6µm and 1 µm long respectively and also discuss the variation in the length of A and I bands with the decrease in the length of a sarcomere.

Introduction: Muscles are joined together with the help of muscle fibers. The sarcomere is the basic unit of muscle contraction. The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles.

Answer 7

Chapter 14, Problem 14.3PS

(a)

Summary Introduction

To determine: The length of A and I band in the muscle fiber of frog consisting of thick filaments and thin filaments which are about 1.6µm and 1 µm long respectively and also discuss the variation in the length of A and I bands with the decrease in the length of a sarcomere.

Introduction: Muscles are joined together with the help of muscle fibers. The sarcomere is the basic unit of muscle contraction. The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles.

Answer 8

(b)

Summary Introduction

To understand: The physical meaning of the H zone with a decrease in the length of ‘A’ band along with contraction of sarcomere from 3.2 µm to 2.0 µm.

Introduction: The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles. The lighter region present in the middle of ‘A’ band is called as H zone.

Answer 9

(b)

Summary Introduction

To understand: The physical meaning of the H zone with a decrease in the length of ‘A’ band along with contraction of sarcomere from 3.2 µm to 2.0 µm.

Introduction: The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. A and I bands are unique to skeletal and cardiac muscles. The lighter region present in the middle of ‘A’ band is called as H zone.

Answer 10

(c)

Summary Introduction

To dissect: The distance of H zone from Z line during muscle contraction.

Introduction: The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. ‘A’ and ‘I’ bands are unique to skeletal and cardiac muscles. The lighter region present in the middle of ‘A’ band is called as H zone. Z line is present in the middle of each ‘I’ band.

Answer 11

(c)

Summary Introduction

To dissect: The distance of H zone from Z line during muscle contraction.

Introduction: The length of the sarcomere decreases or increases based on muscle contraction and relaxation. Each sarcomere is composed of thick and thin filaments. ‘A’ and ‘I’ bands are unique to skeletal and cardiac muscles. The lighter region present in the middle of ‘A’ band is called as H zone. Z line is present in the middle of each ‘I’ band.

Answer 12

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Answer 13

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Answer 14

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Answer 15

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Solution Summary: The author determines the length of A and I bands in the muscle fiber of frog consisting of thick and thin filaments.

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