About This Chapter
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Earning College Credit
Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.
To learn more, visit our Earning Credit Page
Transferring credit to the school of your choice
Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.
Other chapters within the MTEL Biology (13): Practice & Study Guide course
- MTEL Biology: Scientific Inquiry
- MTEL Biology: Scientific Processes
- MTEL Biology: Analysis & Interpretation of Data
- MTEL Biology: Using Laboratory Equipment
- MTEL Biology: History & Issues in Science
- MTEL Biology: Introduction to Inorganic Chemistry
- MTEL Biology: Organic Chemistry Foundations
- MTEL Biology: Overview of Biochemistry
- MTEL Biology: Cell Biology
- MTEL Biology: Prokaryotic Cells
- MTEL Biology: Cell Communication
- MTEL Biology: Protists, Fungi & Viruses
- MTEL Biology: Plant Cells
- MTEL Biology: Cell Reproduction & Division
- MTEL Biology: Basic Biochemistry of Life
- MTEL Biology: Plant Structures & Functions
- MTEL Biology: Microbiology & Types of Microbes
- MTEL Biology: The Circulatory, Respiratory, Digestive, Excretory & Musculoskeleton Systems
- MTEL Biology: The Nervous, Immune & Endocrine Systems
- MTEL Biology: Reproduction & Development
- MTEL Biology: Introduction to Disease
- MTEL Biology: Disorders & Diseases of the Body Systems
- MTEL Biology: Diabetes, Arthritis & Genetic & Neurological Disorders
- MTEL Biology: Fundamental Body Tissues
- MTEL Biology: Connective Tissue
- MTEL Biology: Gross Anatomy of Muscular System
- MTEL Biology: Skeletal System
- MTEL Biology: Skin Disorders
- MTEL Biology: Alterations of the Musculoskeletal System
- MTEL Biology: Human Genetics
- MTEL Biology: DNA Replication
- MTEL Biology: The Transcription & Translation Process
- MTEL Biology: Genetic Mutation, Variability & Engineering
- MTEL Biology: Evolution
- MTEL Biology: History of Life
- MTEL Biology: Taxonomic Systems
- MTEL Biology: Ecology
- MTEL Biology: Ecosystems & Biomes
- MTEL Biology: Renewable Resources
- MTEL Biology: Environmental Pollution
- MTEL Biology: Global Warming & Environmental Issues
- MTEL Biology Flashcards