10 Questions
Which stage of digestion begins with secretions from gastric glands in response to the sight and smell of food?
Cephalic phase
Which enzyme, found in saliva, aids in the chemical breakdown of food in the mouth?
Amylase
Where does the gastric phase of digestion primarily occur?
Stomach
Which organ produces a number of enzymes involved in the digestion of partially digested food in the duodenum?
Pancreas
What is the function of lingual lipase in the process of digestion?
Initiating the breakdown of fats in the mouth
In land animals, where does gas exchange occur in the respiratory system?
Alveoli in mammals and atria in birds
What is the function of the bronchioles in the respiratory system of mammals and birds?
They generally open into the microscopic alveoli in mammals and atria in birds
What is the primary function of the trachea in the respiratory system?
To provide a passage for air to enter the lungs
What is the role of the air sacs in the respiratory system of land animals?
To bring the air into close contact with the blood
What is the main purpose of the muscles of respiration in the respiratory system?
To pump air from the environment into the alveoli or atria
Test your knowledge of the human digestive system with this quiz. Explore the three stages of digestion and the role of the gastrointestinal tract and accessory organs. See how well you understand the process of breaking down food for absorption and assimilation into the body.
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