Structures and Functions of the Body

What two body systems are interacting in the above diagram?

• Integumentary-excretory
• Digestive-circulatory
• Nervous-endocrine
• Respiratory-circulatory

One of the functions of the endocrine system in the body is to —

• circulate blood to all parts of the body
• collect waste products and remove them from the body
• provide a strong framework for the body
• produce enzymes to help digest food

The nervous system of the human organism is most like which cell organelle?

• Mitochondrion
• Nuclues
• Cytoplasm
• Chloroplast

Two body systems work together to help remove waste products from blood. What are these two systems?

• Circulatory and excretory
• Skeletal and digestive
• Circulatory and integumentary
• Muscular and excretory

The main function of the excretory system is to ―

• produce enzymes to help digest food
• collect and remove waste products from the body
• prevent disease and fight infections
• carry oxygen and nutrients to the body’s cells

How do gills of fish help their survival?

• Gills allow fish to break down water into oxygen and hydrogen.
• Gills allow fish to process energy quicker so they can move faster.
• Gills allow fish to breathe in air and water.
• Gills allow fish to use the oxygen dissolved in the water.

What is the major role of red blood cells in the circulatory system?

• Carry nutrients and oxygen to body cells
• Prevent disease and fight infections
• Carry digestive juices to the stomach
• Send chemical messages to the nervous system

Which of the following adaptations helps birds fly?

• They have more fat than most animals, so they can fly for long distances.
• They have hollow bones, so they are lighter.
• They have smaller blood vessels, so their hearts have to work less in flight.
• They have a larger stomach, so they can absorb food faster.

What process is illustrated in the above diagram?

• Photosynthesis
• Gas exchange
• Pumping blood
• Gas deposition

Ovaries produce and secrete hormones in addition to eggs. To what human body systems do ovaries belong?

• Integumentary and reproductive
• Excretory and muscular
• Endocrine and reproductive
• Nervous and digestive