Muscles

1. What is the primary function of skeletal muscles?

• facilitate movement by contracting and relaxing

• regulate body temperature

Name the three types of muscles in the human body

• smooth muscles, rough muscles, and bumpy muscles

• skeletal muscles, smooth muscles, and cardiac muscles

1. What is the role of smooth muscles in the digestive system?

• 1. Smooth muscles are responsible for conscious movements like walking and running.

• 1. Smooth muscles play a crucial role in the involuntary movements of internal organs, including the digestive system.

1. How do skeletal muscles and tendons work together in movement?

• to transmit force from muscles to bones, allowing movement of joints

• Skeletal muscles and tendons work independently and do not influence each other in movemen

1. What is the significance of the neuromuscular junction in muscle contraction?

• 1. The neuromuscular junction is a point of communication between a nerve cell and a muscle cell, essential for initiating muscle contraction.

• 1. The neuromuscular junction is irrelevant to muscle contractions; muscles contract spontaneously.

1. Explain the difference between voluntary and involuntary muscle contractions.

• 1. Voluntary muscle contractions are under conscious control, while involuntary contractions occur without conscious effort.

• 1. Involuntary muscle contractions are entirely under conscious control.

1. Which mineral is essential for proper muscle function and contraction?

• Potassium

• Calcium

1. What is the importance of stretching before engaging in physical activities involving muscles?

• It helps improve flexibility and reduces the risk of muscle injuries.

• It has no impact on preventing muscle injuries.

1. How does aerobic exercise benefit skeletal muscles?

• By decreasing blood flow and oxygen delivery, reducing endurance, and inhibiting the growth of new blood vessels.
• By increasing blood flow and oxygen delivery, improving endurance, and promoting the growth of new blood vessels.

1. What is the term for the condition where muscles are inflamed or damaged due to overexertion?

• bone fracture
• muscle strain