Chapter 40.1, Problem 1CYL

Summary Introduction

To describe:

The structure of vertebrate skeletal muscle from a whole muscle through individual muscle cells and subcellular structures down to the proteins involved in muscle contraction.

Introduction:

During muscle contraction, the myosin head flexes, pulling the thin filament the thick filament and shortening the sarcomere. The Nervous system controls the contraction of skeletal muscles.

Summary Introduction

To explain:

The sliding filament mechanism of muscle contraction.

Introduction:

The thin and thick filaments include the molecular architecture which allows both to grip and to slide past one another. This provides the contraction of muscles and shortening of the sarcomere and is known as sliding filament mechanism

Summary Introduction

To explain:

The way in which the nervous system causes the contraction of skeletal muscles and the way it determines the strength of contraction.

Introduction:

A skeletal muscle's reserves of ATP are used up after only a few seconds of high-intensity exercise. The muscles used the energy in the stretched form. The Nervous system controls the contraction of skeletal muscles.

Summary Introduction

To distinguish:

Between the fast twitch and slow twitch muscles.

Introduction:

Two different and specified activities are involved in the two types of muscle fibers: fast twitch and slow twitch. They are different forms of myosin which causes to contract slowly and more rapidly.