Week 10 practice
Which of the following best describes the role of the small intestine in the digestive process? A. small intestine: most chemical digestion of proteins, carbs, and lipids occurs here B. small intestine: chemical digestion of proteins, carbs, and lipids begins here, ending in absorption C. small intestine: proteins partially digested, but lipids and carbs are completely digested here D. small intestine: proteins and lipids partially digested, but carbs are completely digested here
A
Which of the following does NOT correctly describe a function of the liver? A. the primary site of red blood cell production B. metabolizes or modifies toxins (e.g. alcohol), heme, and most drugs for excretion in bile or urine C. synthesize most of the plasma proteins D. convert glucose as glycogen and stores them
A
Which of the following best describes the submucosa of the GI tract? A. irregular tissue filled with glands that secrete mucus to protect GI tract B. dense layer of connective tissue: blood vessels and nerves branch from it into mucosa and muscularis C. thin, fluid-lined tissue that lubricates the GI tract D. muscular tissue that churns and moves chyme through tract
B
Which of the following is NOT a correct statement about the processes and functions of the digestive system? A. Large intestine reabsorbs some water and minerals to form feces which are excreted via anus B. It begins in small intestine with release of bile from gallbladder to emulsify proteins and fats C. Swallowed food move through esophagus to stomach for more processing, and nutrients are mainly absorbed in small intestine D. It begins in mouth mechanically (chewing) and chemically (salivary amylase breaks down macromolecules)
B
Which of these organs is not considered an accessory digestive structure? A. salivary glands B. mouth C. pancreas D. liver
B
Smooth muscle lining the gastrointestinal track propels foodstuff forward. What is this movement called? A. Absorption B. Excretion C. Peristalsis D. Reabsorption
C
Which of the following best describes the function of the pancreas? A. dual-function gland: hypothalamus regulates the production of the combined endo-exocrine tissues B. dual-function gland: exocrine gland produces hormones; endocrine gland secretes pancreatic juice C. dual-function gland: endocrine gland produces hormones; exocrine gland secretes pancreatic juice D. dual-function gland: pituitary regulates the production of the combined endo-exocrine tissues
C
Which of the following best outlines the anatomical organization of the digestive system? A. mouth-esophagus-stomach-cecum-duodenum-jejunum-ileum-ascending, transverse, descending colon-rectum B. upper: esophagus-stomach-ileum; lower: duodenum-jejunum-colon-rectum-cecum-anus C. mouth-esophagus-stomach-duodenum-jejunum-ileum-cecum-ascending, transverse, descending colon-rectum D. upper: mouth-esophagus-stomach; lower: duodenum-jejunum-ileum-colon-rectum-cecum
C
Which of the following does NOT describe the role of the pharynx in digestion? A. swallowed food travels via the laryngopharynx to the esophagus B. the epiglottis prevents food from getting into the trachea C. the Eustachian tubes connect the middle ear to the nasopharynx D. the laryngopharyx is where the respiratory and digestive pathways diverge
C
Which of these processes occurs in the mouth? A. ingestion B. mechanical digestion C. chemical digestion D. all of the above
D
