Digestion and Respiration

The process involved in nutrition are...

• digestion, respiration, circulation and excretion
• digestion, respiration, circulation and growth
• digestion, reproduction, circulation and excretion

Tags

NGSS.MS-LS1-7

NGSS.MS-LS2-3

The bolus is...

• a portion of food before it enters in the mouth
• a milky liquid produced in the small intestine
• the mixture of food and saliva produced by chewing

Villi in the small intestine help to...

• Break down the bolus
• absorb nutrients
• eliminate waste

Which of these is the correct sequence of the organs of the digestive tract?

• esophagus, mouth, stomach, small intestine, large intestine
  
• mouth, small intestine, stomach, large intestine
  
• mouth, stomach, esophagus, small intestine, large intestine
  
• mouth, esophagus, stomach, small intestine, large intestine

Where does the absorption of broken down food occur?

• Small Intestines
• Stomach
• Liver
• Large Intestine

__________ are finger-like projections within the small intestine that increase the surface area of the small intestine and allows more places for nutrients to be absorbed.  

• Peristalsis
• Chyme
• Villi
• Capillary

Tags

NGSS.MS-LS1-3

When you inhale, which of the following contracts and relaxes?

• Nephrons
• Bronchioles
• Diaphram
• Kidneys

_____________ are the tiny, thin-walled sacs at the end of each bronchioles, and the exchange of gases occurs between the capillaries and these structures.

• Bronchi
• Alveoli
• Trachea
• Bronchioles

Tags

NGSS.MS-LS1-3

Which of the following conditions becomes worse because of smoking?

• Arthritis
• Emphysema
• Respiration
• Excretion

Mechanical Digestion takes place when food is ____________.

• Chewed
• Broken down by chemical reactions
• absorbed by the body
• excreted from the body