Inquire through: | Professional | Confidential Support
Patho Exam 4 - Module 7: - GI Verified and
Updated Questions and Answers (100%
Correct Answers)
The Gl system is controlled by the
Answer: autonomic nervous system, and the sympathetic and parasympathetic
divisions both innervate the stomach.
Acetylcholine is the primary neurotransmitter of the
Answer: parasympathetic nervous system. So an increase in acetylcholine would
stimulate the Gl tract and the opposite would decrease Gl activity.
The enteric nervous system is a part of the
Answer: autonomic nervous system, but the neurons are located solely within the Gl
tract.
o It is not affected by the vagus nerve, so if your vagus nerve is severed or damaged,
your enteric nervous system in the Gl tract can still function.
Enteric nerves come from both divisions of the
Answer: autonomic nervous system- the parasympathetic and sympathetic divisions
and innervate the small intestine.
Sympathetic nerves inhibit
Answer: motility and cause vasoconstriction.
Parasympathetic activity regulates
Answer: secretion, motility and intestinal reflexes like the relaxation of the lower
esophageal sphincter.
Vagal stimulation promotes
Answer: peristalsis and segmentation which are rhythmic contractions that occur
more regularly than peristalsis.
Plexus:
Answer: refers to the nerves, blood vessels and lymphatic vessels that control a
specific area.
o The enteric plexus is made up of the submucosal plexus, the mesenteric plexus and
the subserosal plexus that control the Gl tract.
, Inquire through: | Professional | Confidential Support
o These neurons will help regulate motility, blood flow, absorption, secretions, and
the Immune response.
Distinguish between the voluntary and involuntary functions of the GI tract
Answer: Voluntary
• Chewing
• Swallowing
Involuntary*
• Peristalsis
• Digestion
• Absorption
• controlled by autonomic nervous system and hormones
Salivary amylase increases
Answer: lubrication and helps breakdown carbohydrates.
Three different salivary glands:
Answer: the parotid, submandibular, and sublingual glands.
The ______ gland is very large and a common sight of stones, typically calcium
stones, and also infection
Answer: parotid
The salivary glands are stimulated by
Answer: cholinergic parasympathetic fibers, and saliva is protective of teeth,
neutralize bacterial acids and has some antimicrobial properties that prevent
infection
The mucin in saliva helps
Answer: lubricate food
In swallowing, the oral, or pharyngeal phase is ______, and the esophageal phase is
________.
Answer: voluntary, involuntary
Patho Exam 4 - Module 7: - GI Verified and
Updated Questions and Answers (100%
Correct Answers)
The Gl system is controlled by the
Answer: autonomic nervous system, and the sympathetic and parasympathetic
divisions both innervate the stomach.
Acetylcholine is the primary neurotransmitter of the
Answer: parasympathetic nervous system. So an increase in acetylcholine would
stimulate the Gl tract and the opposite would decrease Gl activity.
The enteric nervous system is a part of the
Answer: autonomic nervous system, but the neurons are located solely within the Gl
tract.
o It is not affected by the vagus nerve, so if your vagus nerve is severed or damaged,
your enteric nervous system in the Gl tract can still function.
Enteric nerves come from both divisions of the
Answer: autonomic nervous system- the parasympathetic and sympathetic divisions
and innervate the small intestine.
Sympathetic nerves inhibit
Answer: motility and cause vasoconstriction.
Parasympathetic activity regulates
Answer: secretion, motility and intestinal reflexes like the relaxation of the lower
esophageal sphincter.
Vagal stimulation promotes
Answer: peristalsis and segmentation which are rhythmic contractions that occur
more regularly than peristalsis.
Plexus:
Answer: refers to the nerves, blood vessels and lymphatic vessels that control a
specific area.
o The enteric plexus is made up of the submucosal plexus, the mesenteric plexus and
the subserosal plexus that control the Gl tract.
, Inquire through: | Professional | Confidential Support
o These neurons will help regulate motility, blood flow, absorption, secretions, and
the Immune response.
Distinguish between the voluntary and involuntary functions of the GI tract
Answer: Voluntary
• Chewing
• Swallowing
Involuntary*
• Peristalsis
• Digestion
• Absorption
• controlled by autonomic nervous system and hormones
Salivary amylase increases
Answer: lubrication and helps breakdown carbohydrates.
Three different salivary glands:
Answer: the parotid, submandibular, and sublingual glands.
The ______ gland is very large and a common sight of stones, typically calcium
stones, and also infection
Answer: parotid
The salivary glands are stimulated by
Answer: cholinergic parasympathetic fibers, and saliva is protective of teeth,
neutralize bacterial acids and has some antimicrobial properties that prevent
infection
The mucin in saliva helps
Answer: lubricate food
In swallowing, the oral, or pharyngeal phase is ______, and the esophageal phase is
________.
Answer: voluntary, involuntary
