Human Body Systems

The heart is the major organ of the circulatory system. Which part of the body is responsible for delivering de-oxygenated blood to the heart?

• arteries

• capillaries

• valves

• veins

Most mechanical digestion takes place in the

• liver

• esophagus

• stomach

• small intestine

The filtration of wastes takes place inside the kidneys in the

• ureters

• urethra

• urinary bladder

• nephrons

Urine leaves the body through the

• ureter

• urethra

• bladder

• anus

Peristalsis helps move nutrients through parts of the body by using wavelike contractions. In which system is the function used?

• circulatory

• digestive

• endocrine

• respiratory

Which body system is modeled in the diagram?

• the digestive system

• the muscular system

• the reproductive system

• the circulatory system

What part of the digestive system first causes chemical changes to food?

• teeth in the mouth

• enzymes in the stomach

• saliva in the mouth

• enzymes in the small intestine

Tags

NGSS.MS-LS1-7

Each organ in the digestive system has a specific function. During digestion, food passes from the stomach into the small intestine. Which statement BEST describes what takes place in the small intestine?

• Nutrients are absorbed from the food.

• Wastes are prepared to pass out of the body.

• Food is churned with acid to break down proteins.

• Excess water is reabsorbed into the blood stream.

Cells need nutrients for energy. Which system is responsible for breaking down food to provide cellular energy?

• digestive

• excretory

• circulatory

• respiratory

Which microscopic blood vessels perform gas exchange in your tissues?

• arteries

• arterioles

• capillaries

• veins