Campbell Biology: Concepts & Connections, Books a la Carte Edition (8th Edition)
Campbell Biology: Concepts & Connections, Books a la Carte Edition (8th Edition)
8th Edition
ISBN: 9780321946683
Author: Jane B. Reece, Martha R. Taylor, Eric J. Simon, Jean L. Dickey, Kelly A. Hogan
Publisher: PEARSON
bartleby

Videos

Textbook Question
Chapter 21, Problem 1CC

Label the parts of the human digestive system below and indicate the functions of these organs and glands.

Chapter 21, Problem 1CC, Label the parts of the human digestive system below and indicate the functions of these organs and

Expert Solution & Answer
Check Mark
Summary Introduction

To label: The parts of human digestive system in the figure given and indicate their functions.

Introduction: Human digestive system consists of gastrointestinal (GI) tract and accessory organs. The gastrointestinal tract is made up of mouth, esophagus, stomach, small intestine, large intestine, and anus. The accessory organs for digestion are liver, pancreas, and gallbladder. Each part of the digestive system moves ingested food through gastrointestinal tract, breaks it into small parts, so that they can be absorbed if needed or expelled out.

Answer to Problem 1CC

Fig. 1 shows the organs and glands of the human digestive system.

Pictorial representation: A labeled diagram showing the various parts of a human digestive system.

Campbell Biology: Concepts & Connections, Books a la Carte Edition (8th Edition), Chapter 21, Problem 1CC

Fig.1 Human digestive system

Explanation of Solution

(a)

Correct answer: Oral cavity

Explanation: In a digestive system, the first section is ingestion and chewing of food. This is done by the oral cavity or mouth cavity. It consists of lips, cheek lining, teeth, front part of the tongue, gums, and roof of the mouth. Hence, the correct answer is oral cavity.

(b)

Correct answer: Salivary glands

Explanation: The ingested food moves through gastrointestinal tract by the process known as peristalsis. After chewing, the salivary glands form digestive juice called saliva, which moistens food to easily pass through the esophagus into the stomach. Hence, the correct answer is salivary glands.

(c)

Correct answer: Liver

Explanation: The liver’s function is to produce and secrete a digestive juice known as bile. Bile ducts carry bile from liver to gall bladder for storage, and it helps in digestion of fats. Also, the liver contributes in filtering and purifying the blood. Hence, the correct answer is liver.

(d)

Correct answer: Gall bladder

Explanation: Gall bladder is located below liver and stores bile juice. When fatty food enters the duodenum of the small intestine, the gall bladder squeezes into small intestine through bile ducts. Hence, the correct answer is gall bladder.

(e)

Correct answer: Pancreas

Explanation: Pancreas mainly forms digestive enzymes that are released into small intestine through ducts. These enzymes help in digestion of fats, proteins, and carbohydrates. Hence, the correct answer is pancreas.

(f)

Correct answer: Rectum

Explanation: Rectum is a part of the large intestine that connects the colon to the anus. It receives stool from the colon and accommodates it until it is expelled out through sphincters. Hence, the correct answer is rectum.

(g)

Correct answer: Pharynx

Explanation: Pharynx is also referred as throat in the digestive tract. It receives food from the mouth. It branches into the esophagus and the trachea. The esophagus further takes food to the stomach for digestion, and trachea carries air to the lungs. Hence, the correct answer is pharynx.

(h)

Correct answer: Esophagus

Explanation: After ingestion and chewing of food, the food is pushed to the stomach through peristaltic movement. It is carried through the esophagus. The esophagus is also known as food pipe. Hence, the correct answer is esophagus.

(i)

Correct answer: Stomach

Explanation: Stomach is a digestive organ in the abdominal cavity. It secretes digestive enzymes (breaking of large molecules), mucus (moisten), and hydrochloric acid (protection against microbes) for digestion of ingested food. Hence, the correct answer is stomach.

(j)

Correct answer: Small intestine

Explanation: Small intestine is a coiled structure and secretes digestive juices. It consists of folds that contribute in digestion and absorption of nutrients. Hence, the correct answer is small intestine.

(k)

Correct answer: Large intestine

Explanation: Large intestine consists of cecum, colon, and rectum. It helps in absorption of water from the gastrointestinal tract into the bloodstream. The unused particles are moved further into the rectum for elimination. Hence, the correct answer is large intestine.

(l)

Correct answer: Anus

Explanation: Anus is the last part of the digestive system. It is the external opening at the end of rectum for elimination of feces from the body. Defecation is controlled by two sphincters namely internal and external anal sphincters. Hence, the correct answer is anus.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
List the regions and organs of the human digestive system from mouth to anus. Not including accessory organs. For each organ list the appropriate functions: ingestion, digestion, absorption or elimination. Hint: some organs may have two functions.
Label the digestive system structures in the following figure.
Label the parts of the complete digestive system of a cockroach .For the foregut, label the esophagus, crop and gizzard. For the midgut, look for gastric caeca and stomach or ventriculus. Lastly, for the hindgut, identify the small intestine or ileum, colon, and rectum.
Knowledge Booster
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
    • SEE MORE QUESTIONS
    Recommended textbooks for you
  • Human Biology (MindTap Course List)
    Biology
    ISBN:9781305112100
    Author:Cecie Starr, Beverly McMillan
    Publisher:Cengage Learning
    Medical Terminology for Health Professions, Spira...
    Health & Nutrition
    ISBN:9781305634350
    Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. Schroeder
    Publisher:Cengage Learning
    Body Structures & Functions
    Biology
    ISBN:9781285695495
    Author:Scott
    Publisher:Cengage
  • Body Structures & Functions Updated
    Biology
    ISBN:9780357191606
    Author:Scott
    Publisher:Cengage
    Biology 2e
    Biology
    ISBN:9781947172517
    Author:Matthew Douglas, Jung Choi, Mary Ann Clark
    Publisher:OpenStax
    An Illustrated Guide To Vet Med Term
    Biology
    ISBN:9781305465763
    Author:ROMICH
    Publisher:Cengage
  • Human Biology (MindTap Course List)
    Biology
    ISBN:9781305112100
    Author:Cecie Starr, Beverly McMillan
    Publisher:Cengage Learning
    Medical Terminology for Health Professions, Spira...
    Health & Nutrition
    ISBN:9781305634350
    Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. Schroeder
    Publisher:Cengage Learning
    Body Structures & Functions
    Biology
    ISBN:9781285695495
    Author:Scott
    Publisher:Cengage
    Body Structures & Functions Updated
    Biology
    ISBN:9780357191606
    Author:Scott
    Publisher:Cengage
    Biology 2e
    Biology
    ISBN:9781947172517
    Author:Matthew Douglas, Jung Choi, Mary Ann Clark
    Publisher:OpenStax
    An Illustrated Guide To Vet Med Term
    Biology
    ISBN:9781305465763
    Author:ROMICH
    Publisher:Cengage
    Human digestive system - How it works! (Animation); Author: Thomas Schwenke;https://www.youtube.com/watch?v=X3TAROotFfM;License: Standard Youtube License