Chapter 23 Flashcards
Which of the following is NOT a function of the digestive system?
Filtration
What is the process of absorbing nutrients from ingested material into the blood called?
Absorption
Which of the following is NOT part of the Gl tract?
Liver
The organ responsible for producing bile is:
Liver
Which section of the Gl tract is the primary site for digestion and absorption?
Small intestine
What is the innermost layer of the GI tract called?
Mucosa
The muscularis layer of the stomach is unique because:
It contains an additional oblique layer for churning.
Peristalsis refers to:
Sequential waves of contraction propelling food forward.
Which of the following is an example of chemical digestion?
Salivary amylase breaking down starches
The sphincter responsible for controlling the movement of food from the stomach into the duodenum is the:
Pyloric sphincter
Which organ stores and concentrates bile?
Gallbladder
Villi and microvilli in the small intestine are essential for:
Increasing surface area for absorption
What type of tissue lines the mouth, pharynx, and esophagus?
Non-keratinized stratified squamous epithelium
What is the role of the pancreas in digestion?
Producing and secreting digestive enzymes and bicarbonate
What does the hepatic portal system do?
Delivers absorbed nutrients from the intestine to the liver
Which of the following is a function of the large intestine?
Absorbing water and electrolytes
The large intestine contains bacteria that:
Aid in vitamin synthesis
Which hormone stimulates hunger and feelings of satiety?
Ghrelin
Which hormone decreases GI tract motility and secretion?
Somatotosin
Breakdown of food and nutrients is called:
Digestion
