Biology · Science General

Human Digestive System

2,002 Questions

The human digestive system explores the breakdown of biomacromolecules, covering organs from the stomach to the small intestine. It involves physiological processes like chyme movement, pH levels, and nutrient absorption in the gut. These fundamental biology concepts are regularly featured in medical and general science competitive exams.

Small intestine functionsBiomacromolecule breakdownStomach and digestionIntestinal bacteria

Human Digestive System Questions

Multiple choice

Inside human body biomolecules gets break down by

  1. Circulatory system

  2. Respiratory system

  3. Digestive system

  4. Excretory systems
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The digestive system is the series of tubelike organs that convert our meals into body fuel. In all there's about 30 feet (9 meters) of these convoluted pipeworks, starting with the mouth and ending with the anus. Along the way, food is broken down, sorted, and reprocessed before being circulated around the body to nourish and replace cells and supply energy to our muscles.

Multiple choice

Which of the following statements about paneth cells is/are false?

P. Paneth cells are found throughout the large intestine and dodecadactylum. Q. They are situated just below the intestinal stem cells in the intestinal glands. R. These cells synthesise and release adequate quantities of antimicrobial peptides and proteins.

  1. Only P

  2. Only Q

  3. Only R

  4. Only P and Q

  5. Only Q and R
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This option is correct. Paneth cells are found throughout the small intestine and appendix at the base of the intestinal glands.

Multiple choice

The passing of the tarry black stools in motion is called

  1. Heamaturia

  2. Hypovolemia

  3. Hyper apnea

  4. Melena

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Melena is the passage of tarry black stools due to upper gastrointestinal bleeding, where blood is digested and darkened. Hematuria is blood in urine. Hypovolemia is low blood volume. Hyper apnea is not a standard medical term; likely meant hyperapnea (excessive breathing).

Multiple choice

The cryptus of Lieberkuhn secrete:

  1. gastrin

  2. rennin

  3. cholecystokinin

  4. succus entricus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The crypts of Lieberkuhn are simple, tubular structures which occur through out the small intestine and involved in th secretion of intestinal juice or succus entericus.