Deck 27: Functional Anatomy and General Principles of Regulation in the Gastrointestinal Tract

Question 1

Gastrin stimulates release of histamine through an action defined as:

A)Neurocrine.
B)Endocrine.
C)Paracrine.

Answer 1

B

Question 2

The enteric nervous system contains which kinds of neurons?

A)Interneurons
B)Afferent (sensory)neurons
C)Efferent (motor)neurons
D)All of the above

Answer 2

D

Question 3

The postganglionic sympathetic neurons innervating the gastrointestinal tract lie in which ganglia?

A)Dorsal root ganglia
B)Nodose ganglia
C)Ventral horn of the spinal cord
D)Paravertebral ganglia
E)Prevertebral ganglia

Answer 3

E

Question 4

The craniosacral outflow from the central nervous system gives rise to which subdivision of the autonomic nervous system?

A)Sympathetic nervous system
B)Parasympathetic nervous system
C)Enteric nervous system

Question 5

A scientist genetically engineers a mouse to lack the hormone secretin.In comparison with a normal animal,which of the following would be expected to be increased in the mutant mouse?

A)The pH of pancreatic ductular secretion
B)The volume of pancreatic secretion
C)The pH of duodenal contents
D)The susceptibility to duodenal erosions and ulcerations
E)Gallbladder contractibility