Ch 26: MTEL Biology: Muscular System

About This Chapter

Review information about the different types of muscle fibers and their functions in this engaging chapter. Watch fun video lessons that illustrate muscular system topics that will be on the MTEL Biology exam.

MTEL Biology: Muscular System - Chapter Summary

Refresh your content knowledge of sarcomere and the muscular system by reviewing this chapter's effective text transcripts and video lessons. Study the other lessons in the chapter before the MTEL Biology test to check your understanding of the following:

  • The neuromuscular junction
  • Length and tension within skeletal muscles
  • How motor unit summation develops muscle tension
  • Excitation-contraction coupling and sliding filaments
  • Major skeletal muscle organization and functions
  • Muscle twitch and motor-unit summation
  • Isometric and isotonic contraction, and cross-bridge formation
  • Muscle metabolism and skeletal muscle fibers
  • Skeletal, cardiac and smooth muscle tissue

Our professional instructors also cover muscle metabolism and the synthesis of ATP in this chapter. All the videos in the chapter can be viewed in a short amount of time and specific segments are easily revisited with the video tags.

Objectives of the MTEL Biology: Muscular System Chapter

The MTEL Biology exam has a total of seven subareas on it that altogether give the test 100 multiple-choice questions and two questions that are open-ended. Questions on the exam involved with the muscular system will be in the Human Anatomy and Physiology subarea. This subarea makes up 14% of the test's content. Become familiar with the kinds of questions you'll see on the test about this chapter's material with the lessons' self-assessment quizzes.

13 Lessons in Chapter 26: MTEL Biology: Muscular System
Test your knowledge with a 30-question chapter practice test
Types of Muscle Tissue: Skeletal, Cardiac & Smooth

1. Types of Muscle Tissue: Skeletal, Cardiac & Smooth

Have you ever wondered why muscle has different names such as striated, smooth, voluntary, or involuntary? This lesson describes the different types of muscle tissue based on their histology, mechanism of contraction, and regulation.

Major Skeletal Muscle Functions

2. Major Skeletal Muscle Functions

Did you know that skeletal muscle does more than just move our body parts? This lesson describes how skeletal muscles are used for movement, posture, swallowing, defecation, urination and homeostasis.

Skeletal Muscle Organization: Connective Tissue and Layers

3. Skeletal Muscle Organization: Connective Tissue and Layers

Did you know that skeletal muscles are organized into tightly packed groups? This lesson identifies the connective tissue layers that organize skeletal muscle into fascicles, muscle fibers and myofibrils. Additionally, the microscopic structure of the sarcomere is described.

The Sarcomere and Sliding Filaments in Muscular Contraction: Definition and Structures

4. The Sarcomere and Sliding Filaments in Muscular Contraction: Definition and Structures

Did you know that a sarcomere is the fundamental functional unit of striated muscle? This lesson describes the thick and thin filaments of a sarcomere and how they interact with each other to cause sarcomere shortening and muscular contraction.

Muscular Contraction: Cross-Bridge Formation

5. Muscular Contraction: Cross-Bridge Formation

Did you know that muscles contract as a result of cross-bridge formation between actin and myosin? This lesson describes the stages of cross-bridge cycling and how this results in sarcomere shortening and muscular contraction.

Excitation-Contraction Coupling & Muscular Contraction Regulation

6. Excitation-Contraction Coupling & Muscular Contraction Regulation

Did you know that calcium couples neural stimulation with contraction of skeletal muscle? This lesson describes the role of calcium, troponin, tropomyosin, and ATP in the regulation of muscular contraction. Rigor mortis is explained to help you understand the regulation of contraction as well.

The Neuromuscular Junction: Function, Structure & Physiology

7. The Neuromuscular Junction: Function, Structure & Physiology

A neuromuscular junction is a synapse between a motor neuron and skeletal muscle. This lesson describes the events of synaptic transmission leading to contraction of skeletal muscle. Myasthenia gravis is described as a neuromuscular disease.

Length-Tension Relationship in Skeletal Muscle

8. Length-Tension Relationship in Skeletal Muscle

All skeletal muscles have a resting length. When our muscles are stretched to the ideal length, it can maximize muscular contraction. This lesson explains the length-tension relationship in skeletal muscle and explores how the arrangement of myofilaments in a sarcomere can impact tension and contraction.

Muscle Twitch, Wave Summation & Muscle Tension

9. Muscle Twitch, Wave Summation & Muscle Tension

Did you know that posture results from rapid stimulation of skeletal muscles? This lesson describes the nature of a muscle twitch and explains how individual contractions are added together resulting in tetanus and good posture.

How Motor Unit Summation Develops Muscle Tension

10. How Motor Unit Summation Develops Muscle Tension

Did you know that skeletal muscles are composed of motor units? This lesson describes the nature of a motor unit and how motor unit recruitment regulates whole muscle contraction. Additionally, this lesson describes the effect of strength conditioning on muscle.

Isometric and Isotonic Contraction: Definition and Examples

11. Isometric and Isotonic Contraction: Definition and Examples

Did you know that muscles can contract and not move your limbs? This lesson describes the nature of both isometric and isotonic skeletal muscle contraction. Examples are utilized to help you understand how this works.

Muscle Metabolism: Synthesis of ATP

12. Muscle Metabolism: Synthesis of ATP

Did you know our muscles use billions of molecules every second to contract? This lesson describes the different metabolic processes by which ATP is generated by the muscle cell. Examples are utilized to define glycolysis, the citric acid cycle and oxidative phosphorylation.

Skeletal Muscle Fibers: Types and Functions

13. Skeletal Muscle Fibers: Types and Functions

Did you know most human muscles contain a mixture of fast, slow and intermediate fibers? This lesson describes the structure and function of the three muscle fiber types found in humans.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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