BIO 201L LABORATORY 13 RESPIRATORY
SYSTEM FINAL PAPER 2026 QUESTIONS
ANSWERS EXPLANATIONS GRADED A+
◉ Trace the pathway of food in the human digestive system from mouth
to anus and describe the anatomy and function of each organ.. Answer:
1st Stop - The Mouth
When you start chewing something, your salivary glands start producing
saliva to lubricate your food. Your break down your food and your
tongue mixes it up with saliva.
2nd Stop - The Esophagus
Your tongue, teeth and saliva will turn your food into a soft, round mass
that will make it easy to swallow. There are muscles in your throat and
mouth used to push food to your esophagus, which is the tube
connecting your stomach with your throat. The esophagus also has
muscles that create synchronized waves to propel your food into your
stomach. It works in a systematic way - the muscles behind the round
mass of food you have in the esophagus will contract to push it forward
and the muscles ahead of it will relax to make it easy for your food to
travel to your stomach. When your food reaches the lower end of the
esophagus, a muscular valve, called the lower esophageal sphincter,
feels the pressure from the food and opens up to let what you eat enter
your stomach.
, 3rd Stop - The Stomach
You have powerful muscles in your stomach that help to break down
your food into smaller pieces. The digestive glands in your stomach will
also produce enzymes and stomach acid. The combination of stomach
acid and enzymes turn the food into a paste called chyme. Your stomach
muscles will then contract to push the chyme towards your small
intestine. The food will enter the small intestine through a valve called
the pylorus. The pylorus releases a small amount of food at a time.
4th Stop - Small Intestine
Small intestine comes next in the order of digestive system. The
digestion will continue even when your food has entered your
duodenum, the first section of your small intestine. A variety of digestive
juices released by liver, pancreas and gallbladder will enter your small
intestine for complete digestion of food. Pa
◉ Describe the adaptations of the digestive tract for increased surface
area, particularly the small intestine.. Answer: The Small Intestine where
most of the majority of nutrient absoption takes place....
◉ Describe the Accessory organs and their functions of the digestive
tract-liver, Pancreas salivary glands, and gallbladder. Answer: Accessory
Glands: Secrete Digestive Juices.
SYSTEM FINAL PAPER 2026 QUESTIONS
ANSWERS EXPLANATIONS GRADED A+
◉ Trace the pathway of food in the human digestive system from mouth
to anus and describe the anatomy and function of each organ.. Answer:
1st Stop - The Mouth
When you start chewing something, your salivary glands start producing
saliva to lubricate your food. Your break down your food and your
tongue mixes it up with saliva.
2nd Stop - The Esophagus
Your tongue, teeth and saliva will turn your food into a soft, round mass
that will make it easy to swallow. There are muscles in your throat and
mouth used to push food to your esophagus, which is the tube
connecting your stomach with your throat. The esophagus also has
muscles that create synchronized waves to propel your food into your
stomach. It works in a systematic way - the muscles behind the round
mass of food you have in the esophagus will contract to push it forward
and the muscles ahead of it will relax to make it easy for your food to
travel to your stomach. When your food reaches the lower end of the
esophagus, a muscular valve, called the lower esophageal sphincter,
feels the pressure from the food and opens up to let what you eat enter
your stomach.
, 3rd Stop - The Stomach
You have powerful muscles in your stomach that help to break down
your food into smaller pieces. The digestive glands in your stomach will
also produce enzymes and stomach acid. The combination of stomach
acid and enzymes turn the food into a paste called chyme. Your stomach
muscles will then contract to push the chyme towards your small
intestine. The food will enter the small intestine through a valve called
the pylorus. The pylorus releases a small amount of food at a time.
4th Stop - Small Intestine
Small intestine comes next in the order of digestive system. The
digestion will continue even when your food has entered your
duodenum, the first section of your small intestine. A variety of digestive
juices released by liver, pancreas and gallbladder will enter your small
intestine for complete digestion of food. Pa
◉ Describe the adaptations of the digestive tract for increased surface
area, particularly the small intestine.. Answer: The Small Intestine where
most of the majority of nutrient absoption takes place....
◉ Describe the Accessory organs and their functions of the digestive
tract-liver, Pancreas salivary glands, and gallbladder. Answer: Accessory
Glands: Secrete Digestive Juices.
