Healthy Skeletal and Muscular Systems: Your Muscular System

The video explains that everyone has the same number of muscles, but their size and strength vary. Muscles are tissues made of fibers that contract and relax to enable movement. There are three types of muscles: cardiac, smooth, and skeletal. Cardiac muscle is found in the heart, smooth muscle in the stomach and intestines, and skeletal muscle is attached to bones, allowing movement. Tendons connect muscles to bones, and the skeletal system provides a framework. Together, they form the musculoskeletal system.

What is the primary function of muscle fibers?

• To protect internal organs

• To produce hormones

• To store energy

• To contract and relax for movement

Which type of muscle is found in the heart?

• Voluntary muscle

• Skeletal muscle

• Cardiac muscle

• Smooth muscle

Where can smooth muscle be found in the body?

• In the bones

• In the stomach and intestines

• In the heart

• In the skin

What role do tendons play in the musculoskeletal system?

• They connect bones to each other

• They attach muscles to bones

• They produce red blood cells

• They store calcium

What is the combined system of muscles and bones called?

• Digestive system

• Musculoskeletal system

• Nervous system

• Cardiovascular system