Bio Honors (The Digestive and Excretory Systems)

In which part of the digestive system does a chemical change of the food first occur? mouth esophagus stomach liver

Mouth

The functional unit of the kidney is the __

Nephron

Once the teeth start grinding food, _____ is produced to make food moist and slippery.

Saliva

Which plays both a role in physical and chemical digestion? teeth saliva gall bladder villi

Saliva

The digestive system and the excretory system both excrete waste. Which best describes how waste is secreted in each system? The digestive system excretes a liquid waste and the excretory system excretes a solid waste. Both systems excrete waste as a liquid. Both systems excrete waste as a solid. The digestive system excretes a solid waste and the excretory system excretes a liquid waste.

The digestive system excretes a solid waste and the excretory system excretes a liquid waste.

Which are structures of the excretory system? Select four options. kidney spleen bladder esophagus ureter urethra

Kidney Bladder Ureter Urethra

Which best describes the physical and chemical digestion of food? Physical and chemical digestion occur in the mouth; only chemical digestion occurs in the small intestine. Physical and chemical digestion occur in the small intestine; only chemical digestion occurs in the mouth. Only physical digestion occurs in the stomach; chemical and physical digestion occur in the large intestine. Only physical digestion occurs in the large intestine; physical and chemical digestion occur in the stomach.

Physical and chemical digestion occur in the mouth; only chemical digestion occurs in the small intestine.

Which occurs during digestion? The mouth only allows for physical digestion. The mouth only allows for chemical digestion. Chemical digestion prepares the food for physical digestion. Physical digestion prepares the food for chemical digestion.

Physical digestion prepares the food for chemical digestion.

Which shows the best connection between the digestive and excretory systems? The digestive system fuels the cells and the excretory system rids the body of the cells' waste. The digestive system rids the body of the cells' waste and the excretory system fuels the cells. The digestive system does physical digestion while the excretory system carries out chemical digestion. The digestive system carries out chemical digestion while the excretory system does physical digestion.

The digestive system fuels the cells and the excretory system rids the body of the cells' waste.

The picture represents the excretory system. Which is represented by the X? nephron ureter bladder urethra

Ureter

The diagram shows a nephron. Where is the blood first filtered?

W (red vein next to circle thing)

Which structures of the digestive system, aside from the small intestine, release substances that help break down food in the small intestine? stomach and liver liver and large intestine pancreas and liver large intestine and pancreas

pancreas and liver

Which statement best describes the breakdown of food in the digestive system? Carbohydrate digestion starts in the stomach and protein digestion starts in the stomach. Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach. Carbohydrate digestion starts in the esophagus and protein digestion starts in the small intestine. Carbohydrate digestion starts in the small intestine and protein digestion starts in the esophagus.

Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach.

Which is the role of the gall bladder? to provide physical digestion to store the liquid produced by the liver to make the liquid that is stored in the liver to decrease the chemical digestion

to store the liquid produced by the liver