BIOS256 EXAM 1 LATEST UPDATE
VERIFIED QUESTIONS & DETAILED
EXPLANATIONS GRADED A+
Professional Academic Assistance Services
Describe the role of the myenteric plexus and innervation in the
GI tract. - Answer: innervates the smooth muscle layers, to
control motility
Define deglutition - Answer: swallowing
Define mastication - Answer: chewing; mixed with saliva to
make bolus
Define emulsification - Answer: large lipid droplets are
converted into smaller lipid droplets and giving them polarity
Define peristalsis - Answer: contraction and relaxation of the
longitudinal muscularis layer of the GI tract to push contents
forward
Describe the functions of the parietal and chief cells and the role
, of their secretions - Answer: Parietal:
hydrochloric acid (HCl); intrinsic factor, and a hunger hormone
ghrelin
Chief:
gastric lipase: aids in the digestion of lipids; pepsinogen: inactive
form of pepsin that aids in the digestion of proteins
Accessory VS Essential Digestive Organs - Answer: Main organs:
mouth, pharynx, esophagus, stomach, small intestine, large
intestine, rectum, and anal canal
Accessory organs:
teeth and tongue, salivary glands, liver, gallbladder, pancreas,
and vermiform appendix
Describe the roles played by both the liver and the gallbladder in
digestion - Answer: Liver: Secretes bile which contributes to
digestion
Gallbladder: concentrates and stores bile produced in the liver
List and describe all the secretions of the pancreas - Answer:
endocrine: production of glucagon and insulin to moderate
blood glucose levels; Pancreatic islets
VERIFIED QUESTIONS & DETAILED
EXPLANATIONS GRADED A+
Professional Academic Assistance Services
Describe the role of the myenteric plexus and innervation in the
GI tract. - Answer: innervates the smooth muscle layers, to
control motility
Define deglutition - Answer: swallowing
Define mastication - Answer: chewing; mixed with saliva to
make bolus
Define emulsification - Answer: large lipid droplets are
converted into smaller lipid droplets and giving them polarity
Define peristalsis - Answer: contraction and relaxation of the
longitudinal muscularis layer of the GI tract to push contents
forward
Describe the functions of the parietal and chief cells and the role
, of their secretions - Answer: Parietal:
hydrochloric acid (HCl); intrinsic factor, and a hunger hormone
ghrelin
Chief:
gastric lipase: aids in the digestion of lipids; pepsinogen: inactive
form of pepsin that aids in the digestion of proteins
Accessory VS Essential Digestive Organs - Answer: Main organs:
mouth, pharynx, esophagus, stomach, small intestine, large
intestine, rectum, and anal canal
Accessory organs:
teeth and tongue, salivary glands, liver, gallbladder, pancreas,
and vermiform appendix
Describe the roles played by both the liver and the gallbladder in
digestion - Answer: Liver: Secretes bile which contributes to
digestion
Gallbladder: concentrates and stores bile produced in the liver
List and describe all the secretions of the pancreas - Answer:
endocrine: production of glucagon and insulin to moderate
blood glucose levels; Pancreatic islets
