Human Body Unit Review

Front

What is the main function of the small intestine?

Back

The main function of the small intestine is nutrient absorption, facilitated by its large surface area due to small fingerlike projections called villi.

Front

How do muscles interact with the integumentary system?

Back

Muscles contract to raise hair on the skin, which helps trap heat.

Front

What are the major components of the skeletal system?

Back

The major components of the skeletal system include bones, joints, cartilage, and ligaments.

Front

What is an organ?

Back

An organ is a group of tissues that work together to perform a specific function in the body.

Front

What characterizes smooth muscle?

Back

Smooth muscle is involuntary, found in the lining of the digestive tract and blood vessels, and is used by body systems to complete tasks.

Front

What is the function of ligaments?

Back

Ligaments connect bone to bone and provide stability to joints.

Front

What is the role of cartilage in the skeletal system?

Back

Cartilage lines bones for shock absorption and reduces friction at joints.

Front

What is the difference between voluntary and involuntary muscles?

Back

Voluntary muscles are consciously controlled (e.g., skeletal muscles), while involuntary muscles operate without conscious control (e.g., smooth and cardiac muscles).

Front

What is the function of the heart in the muscular system?

Back

The heart is a muscular organ that pumps blood throughout the body.

Front

What is the integumentary system?

Back

The integumentary system includes the skin, hair, nails, and glands, serving as the body's outer protective layer.