Exam 3 Flashcards
The longitudinal layer of smooth muscle in the large intestinal wall forms three bands called the_________.
Select one:
a. haustra
b. coli longitudini
c. rugae
d. teniae coli
e. omental appendages
d. teniae coli
Anticipation of eating food causes an increase in secretion of gastric juice. This phase of gastric secretion is called the_________ phase.
Select one:
a. cephalic
b. conscious
c. pancreatic
d. gastric
e. intestinal
a. cephalic
Which layer of the small intestine wall contains cells with microvilli?
Select one:
a. Mucosa
b. Muscularis
c. Submucosa
d. Adventitia
e. Serosa
a. Mucosa
Which of the following are effects of aging on the digestive system?
Select one:
a. More likely to develop ulcerations and cancers
b. All of the choices are correct.
c. Blood supply decreases
d. Enamel on teeth becomes thinner
b. All of the choices are correct.
he lips, cheek, and tongue all aid in_________.
Select one:
a. mastication and sense of taste
b. mastication and swallowing
c. speech and swallowing
d. mastication, speech, and swallowing
e. deglutition and peristalsis
Feedback
d. mastication, speech, and swallowing
The enteric plexus
Select one:
a. contains sympathetic neurons and fibers.
b. controls movement and secretion of the digestive tract.
c. is a valve in the GI tract.
d. is found in the mucosa.
e. consists of the myenteric plexus and the celiac plexus.
b. controls movement and secretion of the digestive tract.
The gallbladder_________.
Select one:
a. produces secretin
b. stores bile
c. is attached to the pancreas
d. breaks down red blood cells
e. produces bile
b. stores bile
A swollen uvula might interfere with which of the following?
Select one:
a. Mastication
b. Deglutition and breathing
c. Olfaction
d. Chemical digestion
b. Deglutition and breathing
George has to have his gallbladder removed. His friend told him he can no longer eat fats because he will no longer produce bile. Is this an accurate description of George’s future diet?
Select one:
a. No; the gallbladder only stores the bile that is produced by the liver.
b. Yes; bile must first be stored in the gallbladder before it is functional.
c. No; bile is involved in protein digestion only.
d. Yes; the gallbladder is the organ that produces bile.
a. No; the gallbladder only stores the bile that is produced by the liver.
What is the synthesis of glucose from amino acids called?
Select one:
a. Gluconeogenesis
b. Glycogenolysis
c. Glycogenesis
d. Glycogen catabolism
e. Glycolysis
Feedback
a. Gluconeogenesis
Why is it important that glucose be converted to glucose-6-phosphate once glucose enters a cell?
Select one:
a. It can now cross the plasma membrane.
b. The cells can easily excrete this molecule.
c. Glucose can’t diffuse out of the cell if it is in this form.
d. It becomes a long-term storage molecule for glucose.
e. This form is easier for cells to metabolize.
c. Glucose can’t diffuse out of the cell if it is in this form.
What process produces most of the NADH that contributes to ATP synthesis in the cell?
Select one:
a. Anaerobic fermentation
b. The mitochondrial proton pumps
c. The electron transfer from image
d. Glycolysis
e. The citric acid cycle
e. The citric acid cycle
A molecule that moves electrons from the citric acid cycle to the electron transport chain is_________.
Select one:
a. NADH
b. image
c. ADP
d. image
e. pyruvate
a. NADH
Which of the following recommendations regarding daily requirements is correct?
Select one:
a. Fats should account for 45% of total caloric intake.
b. Protein consumption should be about 45% of total kilocalorie intake.
c. Carbohydrate intake should be around 500 grams daily.
d. Cholesterol intake should be about 300 milligrams per day.
e. Protein consumption should be 10-35% of total kilocalorie intake.
e. Protein consumption should be 10-35% of total kilocalorie intake.
Which of the following events at the electron-transport chain occurs last?
Select one:
a. A hydrogen ion concentration gradient is established.
b. Hydrogen ions are moved from inner to outer mitochondrial compartment.
c. NADH transfer electrons to the electron-transport chain.
d. The movement of hydrogen ions through special channels is coupled to ATP production.
e. Hydrogen ions diffuse into inner mitochondrial compartment.
d. The movement of hydrogen ions through special channels is coupled to ATP production.
A series of metabolic reactions in the liver that converts lactate into glucose is called_________.
Select one:
a. the Cori cycle
b. beta oxidation
c. the electron transport system
d. sugar cleavage
e. the citric acid cycle
a. the Cori cycle
One difference between anaerobic and aerobic respiration is that
Select one:
a. aerobic respiration takes place after anaerobic respiration.
b. aerobic respiration produces more ATP than anaerobic respiration.
c. aerobic respiration does not require oxygen.
d. anaerobic respiration takes place inside cells, while aerobic respiration takes place in the extracellular fluid.
e. anaerobic respiration utilizes the citric acid cycle, but aerobic respiration does not.
b. aerobic respiration produces more ATP than anaerobic respiration.
Which of the following induces renin secretion, constricts afferent arterioles, and reduces GFR and urine volume?
Select one:
a. Angiotensin II
b. Aldosterone
c. Parathyroid hormone
d. Norepinephrine
e. Antidiuretic hormone
d. Norepinephrine
