Science Sponge / List the accessory organs of the digestive system and its functions.

Science Sponge / What blood vessel is responsible for taking blood to the heart? / What kind of bone allows for flexible movement and stress? / What does the lymphatic system do? / What blood vessel is responsible for taking blood to the heart? / What kind of bone allows for flexible movement and stress? / What does the lymphatic system do?

Science Sponge / This is the process for food being led to the stomach. What is it? / The chemical that mixes with your food in the stomach / This is the process for food being led to the stomach. What is it? / The chemical that mixes with your food in the stomach

Science Sponge / List three things that you know about the blood, such as parts of the blood, the places where blood cells form, and the function of blood throughout the body.

Digestive/Urinary System Life Science Ronald E. McNair Middle School Life Science Ronald E. McNair Middle School

Parts of the Digestive System / Mouth / Pharynx / Esophagus / stomach / small intestine / large intestine / Colon-rectum / anus / Mouth / Pharynx / Esophagus / stomach / small intestine / large intestine / Colon-rectum / anus

Accessory Parts / Accessory Organs / Salivary Glands / Pancreas / Liver and Gallbladder / Accessory Organs / Salivary Glands / Pancreas / Liver and Gallbladder

Process--Mouth / Food enters the mouth (mechanical disgetion) / Teeth grind, tear and chop food / Saliva moistens it / Amylase begins to break down carbs in food / Soft mass of chewed food--BOLUS / Food enters the mouth (mechanical disgetion) / Teeth grind, tear and chop food / Saliva moistens it / Amylase begins to break down carbs in food / Soft mass of chewed food--BOLUS

Swallowing / Swallowing--muscles in the tongue and mouth push food into….. / Esophagus--epiglottis keeps most food out of the windpipe / Connects to the stomach at the pyloric valve / Peristalsis forces food into stomach / Swallowing--muscles in the tongue and mouth push food into….. / Esophagus--epiglottis keeps most food out of the windpipe / Connects to the stomach at the pyloric valve / Peristalsis forces food into stomach

Stomach / Stomach--churns and mixes food with acids and enzymes / Three mechanical/chemical tasks / Storage / Mix food, liquid and digestive juices / Soup like mass called CHYME / Empty contents slowly into small intestine / Stomach--churns and mixes food with acids and enzymes / Three mechanical/chemical tasks / Storage / Mix food, liquid and digestive juices / Soup like mass called CHYME / Empty contents slowly into small intestine

Small Intestine / Pyloric sphincter allows chyme into duodenum / Bile from pancreas added / Digestion continues / Absorption begins / Villi--finger like projections / Pyloric sphincter allows chyme into duodenum / Bile from pancreas added / Digestion continues / Absorption begins / Villi--finger like projections

Role of Accessory Organs / Liver--produces bile to help absorb fat; processes nutrients / Gallbladder--stores bile / Pancreas--produces enzymes; neutralizes stomach acids / Liver--produces bile to help absorb fat; processes nutrients / Gallbladder--stores bile / Pancreas--produces enzymes; neutralizes stomach acids

Large Intestine / Main function--remove water from undigested matter and form solid wastes / Colon--solid wastes are stored until expelled through the rectum / Main function--remove water from undigested matter and form solid wastes / Colon--solid wastes are stored until expelled through the rectum

Urinary System Contains organs that remove waste products from your blood Three body systems have a role in excretion: integumentary, respiratory, and finally the urinary system. Contains organs that remove waste products from your blood Three body systems have a role in excretion: integumentary, respiratory, and finally the urinary system.

Lungs / Remove carbon dioxide and water vapor

Skin / Blood flows through vessels of the skin / Water, salt and other wastes diffuse through the sweat glands / Solid wastes stay on the skin / Liquids evaporate and cool the body / Blood flows through vessels of the skin / Water, salt and other wastes diffuse through the sweat glands / Solid wastes stay on the skin / Liquids evaporate and cool the body

Kidneys / Located on either side of backbone / Filters waste from other body systems / Makes sugar available as fuel and sends it to tissues / Removes toxic chemicals in the bloodstream / Located on either side of backbone / Filters waste from other body systems / Makes sugar available as fuel and sends it to tissues / Removes toxic chemicals in the bloodstream

Kidneys / Blood circulates collecting waste / Enters kidneys / Reaches NEPHRONS--filtering units / Remove excess water, salt and urea from blood / Material left in nephron is urine / Passes into 2 tubes called URETERS which connect to urinary bladder / Urine passes through URETHRA--and out / Blood circulates collecting waste / Enters kidneys / Reaches NEPHRONS--filtering units / Remove excess water, salt and urea from blood / Material left in nephron is urine / Passes into 2 tubes called URETERS which connect to urinary bladder / Urine passes through URETHRA--and out

Urinary System Problems / Bacterial infections: infections can get into the bladder, and cause painful infections / Kidney stones: salts and wastes collect inside the kidneys and form kidney stones / Bacterial infections: infections can get into the bladder, and cause painful infections / Kidney stones: salts and wastes collect inside the kidneys and form kidney stones

Urinary System Problems / Kidney disease: damage to nephrons prevent normal kidney functioning, a person will end up on dialysis to help filter the blood.

Some pics to think about…