About This Chapter
Who's It For?
Anyone who needs help learning or mastering muscular system material will benefit from the lessons in this chapter. There is no faster or easier way to learn about the human muscular system. Among those who would benefit are:
- Students who want to learn a broad topic in a short amount of time
- Students who are looking for easy ways to identify the most important information on the topic
- Students who have fallen behind in memorizing anatomy and physiology associated with the human muscular system.
- Students who prefer multiple ways of learning human biology (visual or auditory)
- Students who have missed class time and need to catch up
- Students who have limited time to study for an upcoming exam
How It Works:
- Watch each video in the course to review all key topics
- Refer to the video transcripts to reinforce your learning.
- Test your understanding of each lesson with a short quiz.
- Complete your review with the Muscular System chapter exam.
Why It Works:
- Study Efficiently: The lessons in this course cover only information you need to know.
- Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
- Be Ready on Test Day: Take the Muscular System chapter exam to make sure you're prepared.
- Get Extra Support: Ask our subject-matter experts any human biology question. They're here to help!
- Study With Flexibility: Watch videos on any web-ready device.
Students Will Review:
This chapter summarizes the material students need to know about the muscular system for a standard human biology course. Topics covered include:
- Skeletal, cardiac and smooth muscle tissue
- Function and metabolism of skeletal muscle
- Connective tissue and layers
- Sarcomere and sliding filaments
- Muscle contraction at the cellular and molecular level
- Control of muscle contraction at the neuromuscular junction
- Length and tension relationship in muscle
- Physics of muscle contraction
- Isometric and isotonic contraction
- Muscle twitch and tension
- Skeletal muscle fibers
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.
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Other chapters within the Human Biology Study Guide course
- Introduction to Human Biology
- Human Respiratory System Study Guide
- Human Circulatory System Study Guide
- Blood Vessels Study Guide
- Human Endocrine System Study Guide
- Skeletal System Study Guide
- Integumentary System Study Guide
- Sympathetic & Parasympathetic Nervous Systems Study Guide
- Digestive System Study Guide
- Urinary System Study Guide
- Reproductive System Study Guide
- Human Reproduction Study Guide
- Cell Structures & Cycles Study Guide
- Human Genetics Study Guide
- Disease & Disorders Study Guide
- Disease Origins Study Guide
- Diseases & Disorders Study Guide
- Dentistry Basics Study Guide