Exam 46: The Digestive System

When diet and exercise has failed to produce any significant weight loss,some patients who are seriously overweight elect to have stomach surgery.A procedure galled gastric sleeve surgery removes more than half of the stomach,leaving a tube (or sleeve)about the size of a banana.Following gastric sleeve surgery,patients would have the least trouble ____.

In the human digestive system,the stomach produces about 2 liters of HCl and other gastric secretions every day.The acid secretion of the stomach

Place the processes occurring in the digestive tract in the correct order. I-Peristaltic waves of contraction propel the food along the esophagus. II-Gastric juices are secreted with the arrival of food into the duodenum. III-The acidic chyme is transferred through the pyloric sphincter. IV-HCl and pepsin begin digestion of proteins into shorter polypeptides.

Because of the hepatic portal vein,the ________ is the first organ to receive most of the products of digestion.

Saliva contains the hydrolytic enzyme,salivary amylase,which initiates the breakdown of the polysaccharide ________ into the disaccharide,maltose.

Pancreatic secretion of bicarbonate is stimulated by ________.

A patient with advanced colon cancer just had most of his large intestine removed.What process will be most reduced in this patient as compared to a healthy person?

A new mammal has been discovered in the thickly-forested mountains of Papua New Guinea.The squirrel-like animal lives in the canopy of the forest and has a diet rich in leaves.On occasion,however,the animal drops to the ground to quickly fill its cheeks with its own fecal droppings,for ingestion once it is safely back in the trees.The GI tract of this animal would most likely include ________.

The number of chylomicrons in lymphatic capillaries of the intestine would be increased by eating ________.

A person has his/her gall bladder removed and as a result ________.

Which of the following represents the correct order of vertebrate gastrointestinal tract layers,going from outside the tract to inside the tract?

The secretion of pepsinogen and HCl is controlled by the hormone

Diana has been fasting for a few days and decides to go for a short run before breaking her fast.The glucose she needs for her run will come from________.

In horses,rodents,and lagomorphs,the digestion of cellulose by microorganisms takes place in the

The gizzard is to a bird as the ________ is/are to a mammal.

The arrival of fat-rich chyme to the duodenum stimulates the gall bladder to contract and release ________ into the small intestine.

Dr.Jones has just discovered that a patient who suffers from extreme obesity has abnormal levels of two different classes of proteins that regulate appetite.Select the most-likely protein profile for this patient from the above diagram.

Which process in the diagram causes the greatest insulin release?

Most digestion in humans occurs in the first 25 centimeters of the 6-meter length of the small intestine called the ________.

Which of the following represents the correct order of adult human teeth,beginning at the front and moving right along the bottom jaw?