NU 110 Exam 3 | Digestive System, Small/Large Intestine
Anatomy, Metabolism, Vitamins, Renal System, Male/Female
Reproductive System, Hormones | Comprehensive Study
Guide
Latest 2026/2027 Update | 100% Correct Verified Answers | Grade A Guaranteed – Nursing Program
SUBJECT COURSE FOCUS
Anatomy & Physiology / Nursing NU 110 Exam 3 Digestive System, Metabolism,
Fundamentals Vitamins, Renal System,
Reproductive System, Hormones
Question 1
What are the parts of the small intestine?
CORRECT ANSWER
1. Duodenum, 2. Jejunum, 3. Ileum
RATIONALE
• The duodenum is the first and shortest segment (about 10 inches), receiving chyme and bile.
• The jejunum is the middle segment where most nutrient absorption occurs.
• The ileum is the longest segment connecting to the large intestine at the ileocecal valve.
,Question 2
What is the function of the Duodenum?
CORRECT ANSWER
It receives Chyme. It is where your gallbladder dumps bile via bile ducts.
RATIONALE
• The duodenum receives chyme from the stomach through the pyloric sphincter.
• It receives bile from the gallbladder via the common bile duct and pancreatic enzymes via the pancreatic duct.
• Brunner's glands in the duodenum secrete alkaline mucus to neutralize chyme.
Question 3
What is the importance of the small intestine?
CORRECT ANSWER
Site of nutrient absorption.
RATIONALE
• The small intestine is approximately 20 feet long, providing a large surface area for absorption.
• Villi and microvilli increase surface area 600-fold.
• Approximately 90% of nutrient absorption occurs in the small intestine.
, Question 4
What is the function of the Ileum?
CORRECT ANSWER
It's an extension to make sure whatever nutrients were not absorbed have somewhere to go.
RATIONALE
• The ileum absorbs vitamin B12 and bile salts that were not absorbed in the jejunum.
• It contains Peyer's patches (lymphoid tissue) for immune surveillance.
• The ileocecal valve prevents backflow from the large intestine into the ileum.
Question 5
What is the direction of the large intestine?
CORRECT ANSWER
Ascending colon, transverse colon, descending colon, sigmoid colon, rectum, anus.
RATIONALE
• The ascending colon travels upward on the right side of the abdomen.
• The transverse colon crosses the abdomen from right to left.
• The descending and sigmoid colon descend on the left side, leading to the rectum and anus.
Anatomy, Metabolism, Vitamins, Renal System, Male/Female
Reproductive System, Hormones | Comprehensive Study
Guide
Latest 2026/2027 Update | 100% Correct Verified Answers | Grade A Guaranteed – Nursing Program
SUBJECT COURSE FOCUS
Anatomy & Physiology / Nursing NU 110 Exam 3 Digestive System, Metabolism,
Fundamentals Vitamins, Renal System,
Reproductive System, Hormones
Question 1
What are the parts of the small intestine?
CORRECT ANSWER
1. Duodenum, 2. Jejunum, 3. Ileum
RATIONALE
• The duodenum is the first and shortest segment (about 10 inches), receiving chyme and bile.
• The jejunum is the middle segment where most nutrient absorption occurs.
• The ileum is the longest segment connecting to the large intestine at the ileocecal valve.
,Question 2
What is the function of the Duodenum?
CORRECT ANSWER
It receives Chyme. It is where your gallbladder dumps bile via bile ducts.
RATIONALE
• The duodenum receives chyme from the stomach through the pyloric sphincter.
• It receives bile from the gallbladder via the common bile duct and pancreatic enzymes via the pancreatic duct.
• Brunner's glands in the duodenum secrete alkaline mucus to neutralize chyme.
Question 3
What is the importance of the small intestine?
CORRECT ANSWER
Site of nutrient absorption.
RATIONALE
• The small intestine is approximately 20 feet long, providing a large surface area for absorption.
• Villi and microvilli increase surface area 600-fold.
• Approximately 90% of nutrient absorption occurs in the small intestine.
, Question 4
What is the function of the Ileum?
CORRECT ANSWER
It's an extension to make sure whatever nutrients were not absorbed have somewhere to go.
RATIONALE
• The ileum absorbs vitamin B12 and bile salts that were not absorbed in the jejunum.
• It contains Peyer's patches (lymphoid tissue) for immune surveillance.
• The ileocecal valve prevents backflow from the large intestine into the ileum.
Question 5
What is the direction of the large intestine?
CORRECT ANSWER
Ascending colon, transverse colon, descending colon, sigmoid colon, rectum, anus.
RATIONALE
• The ascending colon travels upward on the right side of the abdomen.
• The transverse colon crosses the abdomen from right to left.
• The descending and sigmoid colon descend on the left side, leading to the rectum and anus.
