EssaysForStudent.com - Free Essays, Term Papers & Book Notes
Search

Urinary and Digestive System

By:   •  Essay  •  929 Words  •  December 6, 2009  •  823 Views

Page 1 of 4

Essay title: Urinary and Digestive System

CH. 16

Digestive and Urinary System

Lesson 1: The Digestive System

Terms:

q Digestion:

q Absorption:

q Elimination:

q Mastication:

q Peristalsis:

q Gastric Juices:

q Bile:

Functions of the Digestive System:

q Digestion, Absorption, and Elimination.

q Digestion occurs in the digestive tract which includes:

1. Mouth: Mastication occurs and enzymes produced by salivary glands starts digesting carbohydrates.

2. Esophagus: 10 in. long and extends from the pharynx to the stomach. Food moves down the esophagus by the peristalsis. The sphincter, a circular muscle at the entrance of the stomach opens and closes to allow food to enter the stomach.

3. Stomach: Holds about 1qt of food for 3-4 hours and controls the rate at which it enters the small intestine. It also produces Chyme and Gastric Juices.

4. Small Intestine: 20ft (6m) long, 1in (2.5cm) in diameter. Consist of 3 parts the duodenum, the jejunum, and the ileum. Intestinal juice, secretions from the liver and pancreas complete chemical breakdown.

5. Large Intestine (Colon): 2.5in (6cm) in diameter and 5-6ft (1.5-1.8m) long. The main function of the large intestine is the elimination of waste and the absorption of water. The water is absorbed into the bloodstream

Other Organs that aid Digestion

q The liver, gallbladder, and pancreas are essential for the digestion of carbohydrates, proteins, and fats.

1. Liver: the largest gland in the body

q Weighs about 3.5 lbs.

q Dark reddish brown color

q Over 500 functions

q Produces bile

q Converts sugar glucose to glycogen and stores it

q Maintains level of glucose in the blood

q Changes harmful to less harmful toxins

q Stores vitamin A, D, E, K, B12, and Iron

2. Gallbladder: Small sac about 3-4 in. (7-10cm) long

q Stores bile until food moves from the stomach into the duodenum of the small intestine.

3. Pancreas: a gland of the digestive and endocrine system.

q Produces insulin

q Produces 3 digestive enzymes:

1. trypsin: digest protein

2. amylase: digest carbohydrates

3. lipase: digest fats

q These enzymes are released into the small intestines through ducts.

Lesson 2: Problems and care of the Digestive Systems

Terms:

q Indigestion:

q Hiatal hernia:

q Gallstones:

q Peptic ulcers:

q Gastritis:

q Appendicitis:

q Hepatitis:

Common Functional Problems:

q Halitosis: (bad breath), can result from disorders of the teeth and gums caused from poor oral health care.

q Indigestion: occurs when your body doesn’t properly breakdown foods. This can be caused by eating too much ,eating too fast, or by indulging in an excess of alcohol.

q Heartburn: occurs when acid content from the stomach backs up into the esophagus. If a person has hiatal hernia they may experience heartburn.

q Gas: a certain amount of gas in the stomach or intestine is normal but some foods can cause an excess of gas.

q Nausea and Vomiting: this can be caused by motion, pathogens, medicines, drugs, and other substances in the stomach. Nausea precedes vomiting. Vomiting is reverse peristalsis.

q Diarrhea:

Continue for 3 more pages »  •  Join now to read essay Urinary and Digestive System and other term papers or research documents
Download as (for upgraded members)
txt
pdf
Citation Generator

(2009, 12). Urinary and Digestive System. EssaysForStudent.com. Retrieved 12, 2009, from https://www.essaysforstudent.com/essays/Urinary-and-Digestive-System/20646.html

"Urinary and Digestive System" EssaysForStudent.com. 12 2009. 2009. 12 2009 <https://www.essaysforstudent.com/essays/Urinary-and-Digestive-System/20646.html>.

"Urinary and Digestive System." EssaysForStudent.com. EssaysForStudent.com, 12 2009. Web. 12 2009. <https://www.essaysforstudent.com/essays/Urinary-and-Digestive-System/20646.html>.

"Urinary and Digestive System." EssaysForStudent.com. 12, 2009. Accessed 12, 2009. https://www.essaysforstudent.com/essays/Urinary-and-Digestive-System/20646.html.