PNB 2265 Exam 3 Spring 2025 Questions
and Answers 2026 Update
The Digestive System... - Correct Answers ✅ingests
nutrients, secretion, mechanical and chemical processing,
absorption, and secretion
GI Tract - Correct Answers ✅long tube that runs from
mouth to anus
Food Poisoning can lead to... - Correct Answers ✅nutrient
deprivation
GI Tract Pathway - Correct Answers ✅mouth, esophagus,
stomach, small intestine, large intestine, rectum
There are _____________ in different regions of the GI Tract. -
Correct Answers ✅specializations
Sphincter Muscles - Correct Answers ✅specialized muscles
that keep different regions of the GI Tract physically and
functionally separated
Food traveling through the digestive system gets modified
along the way by... - Correct Answers ✅secretions of the GI
tract and accessory organs
Salivary glands secrete into the... - Correct Answers
✅mouth
,PNB 2265 Exam 3 Spring 2025 Questions
and Answers 2026 Update
The liver, pancreas, and gallbladder secrete into the... -
Correct Answers ✅small intestine
Where are the digestive system structures located? - Correct
Answers ✅abdominal cavity
peritoneum - Correct Answers ✅serous membrane that
surrounds the abdominal cavity
Layers of Peritoneum - Correct Answers ✅parietal and
visceral
parietal peritoneum - Correct Answers ✅lines walls of
abdominal cavity
visceral peritoneum - Correct Answers ✅covers surface of
organs
peritoneal fluid - Correct Answers ✅fluid between two
layers of peritoneum
What do the layers of the peritoneum do? - Correct
Answers ✅fold in on themselves to create
subcompartments
,PNB 2265 Exam 3 Spring 2025 Questions
and Answers 2026 Update
Greater Omentum - Correct Answers ✅fold that covers
most of the ventral surface of the abdomen
The Greater Omentum... - Correct Answers ✅stores a lot of
adipose tissue, where we deposit visceral belly fat
Anatomical Organization of Tissue Layers in the GI Tract (from
abdominal wall to lumen) - Correct Answers ✅serosa,
muscularis, submucosa, mucosa
The Lumen in the Digestive Tract is considered... - Correct
Answers ✅external environment even though inside the
body (more superficial)
Any food that isn't absorbed... - Correct Answers ✅stays in
the GI tract until it gets excreted into the external
environment again
serosa - Correct Answers ✅outermost layer to abdominal
wall, connective tissue wrapper
muscularis externa - Correct Answers ✅second tissue layer
from the abdominal wall
, PNB 2265 Exam 3 Spring 2025 Questions
and Answers 2026 Update
two layers of muscularis externa - Correct Answers
✅longitudinal (outermost) and circular (innermost)
The smooth muscle fibers in muscularis externa... - Correct
Answers ✅are oriented differently
Longitudinal layer orientation - Correct Answers ✅has
fibers running down the length of the alimentary canal (come
out of screen towards you)
Circular layer orientation - Correct Answers ✅arranged
concentrically, wrapped around the tube
When longitudinal layer contracts... - Correct Answers
✅controls length of tube, shorter when contracted, longer
when relaxed
When circular layer contracts... - Correct Answers ✅radius
of the tube changes, radius decreases when contracted
Muscularis externa contains a layer of... - Correct Answers
✅nervous tissue
Nervous Tissue of muscularis externa - Correct Answers
✅thin line that separates longitudinal and circular layer,
myenteric plexus found here
and Answers 2026 Update
The Digestive System... - Correct Answers ✅ingests
nutrients, secretion, mechanical and chemical processing,
absorption, and secretion
GI Tract - Correct Answers ✅long tube that runs from
mouth to anus
Food Poisoning can lead to... - Correct Answers ✅nutrient
deprivation
GI Tract Pathway - Correct Answers ✅mouth, esophagus,
stomach, small intestine, large intestine, rectum
There are _____________ in different regions of the GI Tract. -
Correct Answers ✅specializations
Sphincter Muscles - Correct Answers ✅specialized muscles
that keep different regions of the GI Tract physically and
functionally separated
Food traveling through the digestive system gets modified
along the way by... - Correct Answers ✅secretions of the GI
tract and accessory organs
Salivary glands secrete into the... - Correct Answers
✅mouth
,PNB 2265 Exam 3 Spring 2025 Questions
and Answers 2026 Update
The liver, pancreas, and gallbladder secrete into the... -
Correct Answers ✅small intestine
Where are the digestive system structures located? - Correct
Answers ✅abdominal cavity
peritoneum - Correct Answers ✅serous membrane that
surrounds the abdominal cavity
Layers of Peritoneum - Correct Answers ✅parietal and
visceral
parietal peritoneum - Correct Answers ✅lines walls of
abdominal cavity
visceral peritoneum - Correct Answers ✅covers surface of
organs
peritoneal fluid - Correct Answers ✅fluid between two
layers of peritoneum
What do the layers of the peritoneum do? - Correct
Answers ✅fold in on themselves to create
subcompartments
,PNB 2265 Exam 3 Spring 2025 Questions
and Answers 2026 Update
Greater Omentum - Correct Answers ✅fold that covers
most of the ventral surface of the abdomen
The Greater Omentum... - Correct Answers ✅stores a lot of
adipose tissue, where we deposit visceral belly fat
Anatomical Organization of Tissue Layers in the GI Tract (from
abdominal wall to lumen) - Correct Answers ✅serosa,
muscularis, submucosa, mucosa
The Lumen in the Digestive Tract is considered... - Correct
Answers ✅external environment even though inside the
body (more superficial)
Any food that isn't absorbed... - Correct Answers ✅stays in
the GI tract until it gets excreted into the external
environment again
serosa - Correct Answers ✅outermost layer to abdominal
wall, connective tissue wrapper
muscularis externa - Correct Answers ✅second tissue layer
from the abdominal wall
, PNB 2265 Exam 3 Spring 2025 Questions
and Answers 2026 Update
two layers of muscularis externa - Correct Answers
✅longitudinal (outermost) and circular (innermost)
The smooth muscle fibers in muscularis externa... - Correct
Answers ✅are oriented differently
Longitudinal layer orientation - Correct Answers ✅has
fibers running down the length of the alimentary canal (come
out of screen towards you)
Circular layer orientation - Correct Answers ✅arranged
concentrically, wrapped around the tube
When longitudinal layer contracts... - Correct Answers
✅controls length of tube, shorter when contracted, longer
when relaxed
When circular layer contracts... - Correct Answers ✅radius
of the tube changes, radius decreases when contracted
Muscularis externa contains a layer of... - Correct Answers
✅nervous tissue
Nervous Tissue of muscularis externa - Correct Answers
✅thin line that separates longitudinal and circular layer,
myenteric plexus found here
