Human Body Systems Practice

In humans, what happens when the breathing rate increases?

• More oxygen will enter the blood.
• More carbon dioxide will enter the blood.
• Oxygen from body cells will be exhaled.
• Oxygen will not be absorbed into the blood.

In humans, red bone marrow provides

• structural support for the body
• a source of new blood cells
• an attachment site for muscle tissue
• a site to trap bacteria

Which is NOT a function of a skeleton?

• transport of nutrients
• organ protection
• anchorage for muscle action
• body movement

Vaping and cigarette smoke disrupts the function of the

• lungs

• diaphragm

• kidneys

• liver

Answer explanation

https://www.cdc.gov/tobacco/basic_information/e-cigarettes/Quick-Facts-on-the-Risks-of-E-cigarettes-for-Kids-Teens-and-Young-Adults.html

The removal of wastes from an organism illustrates the life function known as

• regulation
• nutrition
• respiration
• excretion

Veins are blood vessels that

• deliver blood to the cells of the body

• contain striated muscle

• carry blood toward the heart

• readily exchange materials between the blood and body cells

Two functions of bones are to protect body structures and to

• serve as storage for glycogen
• synthesize vitamins
• provide sites for energy production
• act as levers during body movements

Base your answer on The diagram below represents a system in a human body. This body system is most directly involved in the

• production of blood cells
• stimulation of rapid growth
• elimination of body wastes
• initiation of muscle movement

The main function of the human digestive system is to

• rid the body of cellular waste materials
• process organic molecules so they can enter cells
• break down glucose in order to release energy
• change amino acids into proteins and carbohydrates

Which part of the human digestive tract absorbs nutrients for passage into the blood?

• esophagus
• appendix
• small intestine
• large intestine