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Digestive & Urinary System Essential Question: What is the purpose of the digestive system? Ch. 17 – Lesson 1. Standard: 1.1.6 – Students will analyze the effect of behaviors & habits relating to diet & other choices on various systems like the digestive system.

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Digestive & Urinary SystemEssential Question: What is the purpose of the digestive system? Ch. 17 – Lesson 1

Standard: 1.1.6 – Students will analyze the effect of behaviors & habits relating to diet & other choices on various systems like the digestive system.

I Can Statement: I can learn more about my body systems and the purpose they have.

What s your health status
What’s your Health Status?

  • Answer yes, no, sometimes

  • I eat foods that are low in fat & high in fiber everyday.

  • I limit my intake of salty foods, high sugar snacks and soft drinks.

  • I avoid using food as a way of coping with my emotions.

  • I brush my teeth at least twice a day and floss at least once a day.

Health status cont
Health Status – cont.

5. I chew each bite of food thoroughly before swallowing.

6. I wash my hands before preparing food or eating.

7. I do not use laxatives except when recommended by a health professional.

8. I drink at least 8 – 8 ounce glasses of water each day.

Health status cont1
Health Status – cont.

9. I seek medical attention when diarrhea persists for more than 48 hours.

10. If necessary, I would discuss with a health care professional any changes in urine color or odor, as well as any changes in frequency of urination.

The digestive system
The Digestive System

  • Draw-describe the path that food takes from the time you ingest it until it is eliminated from the body.

Functions of the digestive system
Functions of the Digestive System

  • 3 Main Processes

  • Digestion

  • Absorption

  • Elimination

Structures of the digestive system
Structures of the Digestive System

  • Process begins in the mouth

  • Ingestion, 1st stage

  • Structures involved in ingestion 1(teeth)

    2(Salivary glands) 3(tongue)

The esophagus
The Esophagus

  • When swallowed, food enters here.

  • A muscular tube about 10 inches long.

  • Connects pharynx with the stomach.


  • A series of involuntary muscle contractions that move food through the digestive tract.

  • Action is like a wave moving through the muscle to push food & fluid through.

Sphincter muscle the stomach
Sphincter Muscle/The Stomach

  • Sphincter: Located at the entrance to the stomach allows food to move from the esophagus into the stomach.

  • Stomach: Flexible organ (food may stay in stomach up to 6 hours)

  • Stomach expands when you eat

  • Stomach is a hollow, saclike organ enclosed in a muscular wall

3 tasks in digestion
3 Tasks in Digestion

  • 1. Mixing foods with gastric juices; helps digest proteins; kills bacteria

  • 2. Hydrochloric Acid: strong enough to dissolve metal. Mucous forms to protect lining of stomach.

  • 3. Storing swallowed food & liquid.

  • 4. Moving food into the small intestine. Food is converted to chyme.

The pancreas liver gallbladder
The Pancreas, Liver & Gallbladder

  • Pancreas: produces enzymes that breakdown carbs, fats & proteins

  • Liver: produces bile to breakdown & absorb fats.

  • Gallbladder: at mealtime bile is secreted from here & mixes with fats.

The small intestine
The Small Intestine

  • 20 to 23 feet long

  • 1 inch in diameter

  • Consists of 3 parts: 1 (Duodenum)

    2 (Jejunum) 3 ( ileum)

  • Inner wall contains villa (fingerlike projections; nutrients sent here)

The liver
The Liver

  • The liver is the body’s heaviest gland & largest organ after the skin.

  • Produces bile and removes toxins such as alcohol from the blood.

Large intestine
Large Intestine

  • Undigested parts of food pass into the colon

  • 2.5 inches in diameter

  • 5 – 6 feet long

  • Absorbs water; vitamins and salts

  • Eliminate wastes

Ch 17 lesson 2 care problems of the digestive system
Ch. 17 – Lesson 2Care & Problems of the Digestive System

  • Essential Question: What problems should we be aware of with our digestive system?

  • Standard: 1.1.6 – Students will analyze the effect of individual behaviors, choices & habits relating to diet on various body systems like the digestive system.

Health behaviors
Health Behaviors

  • Eat nutrient rich foods

  • Healthy eating habits reduce risk of problems with digestion

  • Choose high fiber foods

  • Low in fat

  • Wash hands before eating

  • Eat slow; chew thoroughly

  • Drink 8 glasses of water

  • Don’t eat when emotional

Problems of digestive system
Problems of Digestive System

  • Minor discomfort caused by indigestion

  • Upset stomach

  • Bacterial infections

  • Food borne illnesses

  • appendicitis

Digestion problems
Digestion Problems

  • Indigestion: feeling of discomfort in the upper abdomen, caused by eating too much, eating too quickly, spicy food, high fat content, stress.

  • Heartburn: burning sensation in center of chest; acid reflux, hiatal hernia (stomach pushes through an opening.

  • Gas: produced by carbs/cramps

  • Constipation: bowel movements become difficult, caused by not drinking enough water, need more fiber in diet.

Ch 17 hands on health pg 449
Ch. 17 – Hands on Health (pg. 449)

  • Make Posters – Hands on Health

  • Follow instructions – Get a partner or small group

  • Poster Board etc – Present & hang up in class (Work on these at school)

Research structural problems lesson 2
Research – Structural ProblemsLesson 2

  • Do a research paper on these topics and a poster (3 to a group)

  • Gallstones Cirrhosis

  • Appendicitis Crohns disease

  • Gastritis Colon cancer

  • Lactose intolerance Colitis

  • Peptic ulcer Hemorrhoids

  • Tooth Decay

The urinary system ch 17 lesson 3
The Urinary SystemCh. 17 – Lesson 3

  • Essential Question: What are the structures & functions of the urinary system?

  • Standards: 1.1, 1.3, 1.1.6 Students will analyze effects of individual behavior choices & habits relating to various systems.

Urinary system facts
Urinary System Facts

  • The kidneys use filtration to cleanse the blood.

  • The urinary system removes liquid waste.

  • Problems in the urinary system, if left untreated, can affect the entire body and may result in death when severe.

Functions of the urinary system
Functions of the Urinary System

  • Main function: filter waste

  • Filters extra fluid from blood

  • Urine is liquid waste material excreted from the body

  • Urine contains water and body wastes that contain nitrogen; can become toxic to cells if it remains in the body too long


  • Bean shaped organ

  • Size of fist

  • Near the middle of back, just below rib cage

  • Removes waste from blood through tiny filtering units called nephrons (functional unit of the kidney)

Kidney cont
Kidney – cont.

  • Contains 1 million nephrons

  • Each nephron consists of a ball formed of capillaries called a glomerulus; and a small tube called a renal tubule that functions as a filtering funnel.

  • They monitor & maintain body acid base and water balance

  • The urinary system filters 50 gallons of blood and produce 1 to 2 quarts of urine each day.

Vocabulary ch 17
Vocabulary – Ch. 17

  • Ureters: tubes that connect the kidneys to the bladder, 8 to 10 inches long.

  • Urine is passed from ureter to the bladder every 15 seconds.

  • Bladder: a hollow muscular organ that acts as a reservoir for urine.

  • Urethra: the tube that leads from the bladder to the outside of the body.

  • Pg. 455: Exploring health issues (turn-in)

  • Read – write short answer to ACTIVITIES & QUESTIONS 1 and 2

Health behaviors the urinary system
Health Behaviors & The Urinary System

  • Drink 8 – 8 ounce glasses of water a day

  • Eat well balanced diet

  • Practice good hygiene & personal health care

  • Have regular health – medical check ups. Report an changes of color or odor of urine.

Problems of urinary system
Problems of Urinary System

  • Infection

  • Blockage of Urine

  • Cystitis: inflammation of the bladder caused by bacteria

  • Urethritis: inflammation of the urethra caused by bacteria

  • Symptoms of both is: burning pain during urination, increased frequency of urination, fever, presence of blood in urine

  • Treatment: antibiotics

Kidney problems
Kidney Problems

  • Can be Life Threatening!

  • Nephritis

  • Kidney stones: Calcium deposits (pass or treatment required)

  • Uremia: serious, decrease of blood filtering

Kidney failure
Kidney Failure

  • Hemodialysis: artificial kidney removes wastes from blood

  • Peritoneal dialysis: a catheter; tube provides passage way for fluids. Inserted into abdominal wall to remove toxins.

  • Kidney transplant: replacement by a donor

Ch 17 lesson 4 5
Ch. 17 – Lesson 4 & 5

  • Lesson 4: Ch. 17 Review: Pg. 460

  • Exploring Health Terms 1-12

  • Recalling the Facts 1-12

  • Lesson 5: Thinking Critically – 461

  • Answer # 1

  • Answer # 2

  • Answer # 3