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Questions and Answers
What is the primary function of muscle tissue?
What is the basic structural unit of a muscle known as?
Which of the following statements about myofibrils is correct?
Which of the following describes a function of muscle besides movement?
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What percentage of a person's weight is constituted by muscle?
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Which type of lever system is primarily responsible for increasing the speed of a movement?
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What provides the chemical energy for muscle cell actions?
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Which of the following is not a function of muscle tissue?
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Study Notes
Muscle Tissue
- Muscle tissue makes up 40% of a person's weight
- Muscle tissue is made up of muscle cells, which consist of myofibrils
- Myofibrils are the contractile threads of muscle
- Myofibrils extend from one end of the muscle fiber to the other
- The sarcomere is the basic structural unit of a muscle
- Sarcomeres are composed of long fibrous proteins that slide past each other, creating dark and light bands under a microscope
- Muscle cells convert chemical energy in the form of Adenosine Triphosphate (ATP) to fuel their actions
- ATP is derived from the metabolism of food into chemical energy
Functions of Muscle
- Posture/Muscle Tone
- Stability
- Mobility/Movement
- Circulation
- Respiration
- Digestion
- Temperature Regulation/Heat Production
- Organ Protection
- Urination
Movement
- Lever systems are the coordination of bones and muscles to create movement
- Lever systems have two main functions:
- To generate muscular effort to overcome a given load
- To increase the speed of a given movement
Types of Levers
- First-order lever
- Second-order lever
- Third-order lever
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Description
This quiz explores the essential aspects of muscle tissue, including its composition, basic structure, and various functions in the human body. Understanding how muscle cells generate movement and maintain bodily functions is key to appreciating muscle physiology. Test your knowledge on the role of muscle tissue in health and movement.
