weeks 10 11 12

Stimulation of the vagus (parasympathetic) nerve supply to the heart will lead toSelect one:
A. a slowing of the heart rate. 
B. an increase in heart rate.
C. an increase in end-diastolic volume
D. an increase cardiac output.
E. an increase in stroke volume.

Which of the following statements about blood flow through the human heart is correct.Select one:
A. blood enters the heart via the left and right ventricle and then moves into the left and right atrium.
B. blood enters the heart via the aorta and then moves into the left and right ventricle.
C. blood enters the heart via the left and right atria and then moves into the left and right ventricle.
D. both A and C are correct.
E. none of the above are correct.

Blood flows from the inferior and superior vena cava into theSelect one:
A. right atrium. 
B. left atrium.
C. right ventricle.
D. aortic arch.
E. left ventricle.

At rest, the greatest volume of blood is present in the:Select one:
A. heart
B. veins 
C. pulmonary arteries
D. capillaries
E. aorta

The heart muscle obtains oxygen mainly from the blood in:Select one:
A. the ventricles
B. the pulmonary arteries
C. the coronary sinus
D. the atria
E. the coronary arteries 

In the circulation, the largest pressure drop occurs across:Select one:
A. arterioles
B. venules
C. capillaries
D. arteries
E. veins

Gastric acid, released from parietal cells, is inhibited primarily by which substance?Select one:
A. gastrin
B. acetylcholine
C. somatostatin 
D. cholecystokinin
E. histamine

Gastrointestinal motility is:Select one:
A. the movements of the gut wall to propel and mix contents 
B. the movements of the villi to mix food in the gut
C. movements in search of food to eat
D. the movement of molecules that lead to enzymatic breakdown of food
E. the movement of nutrients into the bloodstream

What are three major classes of proteolytic enzymes secreted by the pancreas?Select one:
A. trypsinogen, chymotrypsinogen and amylase
B. trypsinogen, chymotrypsinogen and (pro)carboxypeptidase 
C. chymotrypsinogen, lipase and amylase
D. chymotrypsinogen and (pro)carboxypeptidase and lipase
E. trypsinogen, lipase and sucrase

Gastrointestinal hormones are mostly released from cells located in:Select one:
A. the blood vessels in the gut wall
B. the serosa
C. the submucosa
D. the muscle layers of the gut wall
E. the lining of the gut (the mucosa)