Muscular System Flashcards
What is one function that the muscular system is not responsible for?
The muscular system is not responsible for breaking down macromolecules from food that has been ingested
What are organs
Organs are similar tissues working together for the same function
What is homeostasis?
Homeostasis is the tendency of an organism to maintain a constant and stable internal environment
Which type of muscle is responsible for the movement of the body and the protection of inner vital organs?
Skeletal muscle is responsible for the movement of the body as well as to protect inner vital organs
What are the three types of muscle tissue found in the human body?
The three types of muscle tissue are skeletal muscle, cardiac muscle, and smooth muscle.
How do skeletal muscles contribute to body movement?
Skeletal muscles contribute to body movement by contracting and pulling on bones, which acts as levers to move the body.
What is the role of cardiac muscle?
Cardiac muscle forms the walls of the heart and is responsible for pumping blood throughout the body.
Describe how smooth muscle functions in the body.
Smooth muscle is found in the walls of internal organs and blood vessels, and it helps in movements like digestion and regulating blood flow.
How do muscles work in pairs in the human body?
Muscles work in pairs where one muscle contracts to move a body part, and the opposing muscle relaxes or contracts to return the body part to its original position.
What is the significance of muscle tone for the human body?
Muscle tone is important for maintaining posture and body position; it keeps muscles slightly contracted and ready for action.
What is the primary function of the muscular system in the human body?
The primary function of the muscular system is to facilitate movement of the body, maintain posture, and produce heat.
What are the characteristics of skeletal muscles?
Skeletal muscles are voluntary muscles, characterized by their striated appearance and are attached to bones, enabling body movement.
How do cardiac muscles differ from other muscle types?
Cardiac muscles, found only in the heart, are involuntary and striated. They are specialized for continuous, rhythmic contractions to pump blood.
What is the role of smooth muscles in the body?
Smooth muscles are involuntary muscles found in the walls of internal organs and blood vessels. They control movements like digestion and blood flow.
How do muscles respond to exercise?
Muscles respond to exercise by increasing in strength and endurance. Regular exercise leads to muscle hypertrophy, enhancing their efficiency and stamina.
What is muscle fatigue and what causes it?
Muscle fatigue is the decline in ability of a muscle to generate force. It can be caused by vigorous exercise, lack of nutrients, or dehydration.
What is the role of tendons in the muscular system?
Tendons connect muscles to bones, transmitting the force generated by the muscle to the bone to facilitate movement.
How does the muscular system contribute to maintaining body temperature?
Muscles produce heat as a byproduct of muscle contraction, helping to maintain body temperature.
What is the difference between isotonic and isometric muscle contractions?
Isotonic contractions involve muscle length change and movement of a body part, whereas isometric contractions involve no muscle length change or movement.
How do muscles respond to regular physical training?
Regular physical training increases muscle size, strength, and endurance due to muscle hypertrophy and increased efficiency.
What causes muscle cramps and how can they be prevented?
Muscle cramps are often caused by dehydration, electrolyte imbalances, or overuse. They can be prevented by staying hydrated, maintaining electrolyte balance, and avoiding overexertion.
Describe the process of muscle healing after an injury.
After an injury, muscle healing involves inflammation, the removal of damaged tissue, and the regeneration of muscle fibers, often assisted by physical therapy and proper nutrition.
What are the main types of muscle fibers found in skeletal muscles?
The main types of muscle fibers in skeletal muscles are slow-twitch (Type I) fibers, which are endurance-oriented, and fast-twitch (Type II) fibers, which are suited for short bursts of power.
