Digestive and Excretory

Physically breaking the food into smaller pieces using the teeth and tongue.

• chemical digestion

• mechanical digestion

• enzymes

• peristalsis

The last part of the digestive system, where water is absorbed and waste removed.

• epiglottis

• ureters

• small intestine

• large intestine

A narrow tube that carries urine from one of the kidneys to the urinary bladder.

• ureters

• epiglottis

• villi

• nephrons

The part of the digestive system where most of the nutrients are absorbed through villi.

• small intestine

• large intestine

• peristalsis

• nephrons

Enzymes breaking down the food into simpler nutrients.

• mechanical digestion

• chemical digestion

• peristalsis

• enzymes

Tiny finger-shaped structure that cover the inner surface of the small intestine.

• nephrons

• enzymes

• epiglottis

• villi

Which phrase defines the term homeostasis?

• maintenance of a stable environment inside the body.

• removal of waste materials produced by the cells of the body.

• division of cells that make up the body.

• regulation of the environment outside the body.

What is the main function of the excretory system?

• to regulate and control other body systems

• to remove waste from the body.

• to break down nutrients into smaller molecules

• to obtain oxygen and transport it to all tissues.

When Ellie chews her food carefully, which of these explains what she is doing as her teeth mash and crush the food into smaller pieces.

• She is mixing her saliva with bile.

• She is chemically digesting her food.

• She is performing peristalsis.

• She is mechanically digesting her food.

After reading about this system, Gabriel completed the assignment. What does this system provide for all body cells?

• oxygen

• nutrients

• hormones

• waste products

Tags

NGSS.MS-LS1-3