How it Works
Try Naxlex NCLEX-RN (Free-Trial)

In what digestive system structure does most of the digestion and absorption take place?

A.

Stomach

B.

Duodenum/proximal jejunum

C.

Ascending colon

D.

Transverse colon

Answer and Explanation

The Correct Answer is B

A. Stomach: The stomach primarily functions in mechanical digestion and protein breakdown, but most absorption does not occur here.

B. Duodenum/proximal jejunum: These regions of the small intestine are responsible for majority of digestion and nutrient absorption, including fats, carbohydrates, and proteins.

C. Ascending colon: This is part of the large intestine, mainly involved in water and electrolyte absorption, not digestion.

D. Transverse colon: Like the ascending colon, this structure primarily functions in water absorption and feces formation.

 


Get 100+ Naxlex Exit Exams for $79 Try Naxlex NCLEX-RN (14 Day Free-Trial)

Naxlex Comprehensive Predictor Exams

Free Nursing Study Resources

Related Questions

Correct Answer is C

Explanation

A. Renal failure: While renal failure can affect urine output, glucose in the urine (glucosuria) and polyuria with polydipsia are not the hallmark symptoms.

B. Bladder cancer: This may cause hematuria, but it doesn’t typically cause glucosuria, increased thirst, or urination.

C. Diabetes mellitus: In diabetes mellitus, high blood glucose levels exceed the renal threshold, leading to glucose spilling into the urine, causing polyuria (due to osmotic diuresis) and polydipsia.

D. Kidney cancer: Kidney cancer may cause flank pain, hematuria, or mass, not classic symptoms of diabetes or glucosuria.

Correct Answer is C

Explanation

A. Large intestine, excretion: The large intestine mainly absorbs water and forms feces; it does not have villi.

B. Pancreas, release of hormones: The pancreas releases insulin and glucagon but has no villi and is not directly involved in nutrient absorption.

C. Small intestine, absorption: Villi are fingerlike projections that line the small intestine to increase surface area for absorption of nutrients.

D. Gallbladder, production of bile: The liver produces bile; the gallbladder only stores it. Villi are not involved.

Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.

Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today

Register