Answers
Q1
What is the digestive tract also known as?
Answer: The alimentary canal
Q2
How long is the digestive tract?
Answer: Approximately 30 feet long
Q3
What are the main components of the digestive tract?
Answer: Mouth, pharynx, esophagus, small intestine, large intestine, anus
Q4
What is peristalsis?
Answer: The coordinated, rhythmic contraction of smooth muscle that moves food
through the digestive tract
Q5
What are the accessory organs of the digestive system?
Answer: Teeth, tongue, salivary glands, liver, gallbladder, pancreas
Q6
What is the primary function of the mouth in digestion?
Answer: It is where digestion begins, aiding in chewing, swallowing, and forming
speech
Q7
What is the role of salivary glands?
Answer: They secrete saliva, which aids in digestion
, Q8
What is the length of the esophagus?
Answer: Approximately 10 inches
Q9
What happens in the stomach?
Answer: Food mixes with digestive juices to form chyme
Q10
What is chyme?
Answer: A viscous semi-liquid substance formed in the stomach
Q11
What are the three major sections of the small intestine?
Answer: Duodenum, jejunum, ileum
Q12
Where does most digestion take place?
Answer: In the small intestine
Q13
What is the function of bile?
Answer: To break down fat molecules into droplets
Q14
What are villi?
Answer: Tiny fingerlike projections in the small intestine responsible for absorbing
nutrients