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Biology Perch Dissection & Body Systems

Clarissa Davies, Beau Rovnak & Dustin Prom
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Clarissa Davies

on 13 May 2011

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Transcript of Biology Perch Dissection & Body Systems

PERCH DISSECTION & THE DIGESTIVE AND EXCRETORY SYSTEMS CLARISSA DAVIES, BEAU ROVNAK & DUSTIN PROM EXCRETORY SYSTEM MAJOR FUNCTIONS 1. To remove waste from the human
body.
2. This system consists of specialized structures
and capillary networks that assist in the excretory process. HOW DOES THIS SYSTEM WORK WITH OTHER SYSTEMS? 1. This system works with the digestive system,
because the end product of the kidneys is urine.
2. Works with the nervous system using the nephron, which is associated with blood vessels.
3. The endocrine system, because it produces vasopressin. WIERD/GROSS FACTS -On a hot day, a body retains water for sweating
and cooling which reduces urine.
-Some people suffer from a condition in which they secrete
a very low levels of ADH.
- It is part if the Circulatory system. DIGESTIVE SYSTEM WHAT ARE THE FUNCTIONS OF THIS SYSTEM? The primary functions of the digestive system
is to break down so that the body can use them
to build and nourish cells & provide energy. FOUR MAIN FUNCTIONS: 1. INJESTION
2.DIGESTION
3.ABSORBTION
4.ELIMINATION THE JOURNEY OF FOOD Teeth bite into food.
Teeth & toungue help chew.
Tongue pushes food to the back of the
throat and down the esophogus using muscles.
Next, a valve in the stomach opens and food enters.
Food mixes with with stomach acids and digestive chemicals.
Next, food goes into the small intestine where chemicals from the
Kidneys and pancreas break down whats left.
"Villi" in the small intestine absorb nutrients.
The food that is left is pushed into the large intestine and finally through
the anus. FACTS Intestines are 25 ft. long. It takes 3 hours for food to travel through the digestive system. In a lifetime, your digestive system may handle about 50 tons of food passing though it. DIGESTIVE SYSTEM & THE CIRCULATORY SYSTEM 1. The liver send nutrients around the body after the small intestines absorb the nutrients and give it to the liver.
2. The liver is part of the circulatory system.
3. The digestive system needs the help of the circulary system to distribute nutrients. DIGESTIVE SYSTEM & THE URINARY SYSTEM After the liquids we consume go through the kidneys to be stripped of harmful substances, it travels to the urinary bladder to be excreated. DIGESTIVE SYSTEM & RESPIRATORY SYSTEM After the digestive system
takes in food, the broken down food (glucose) is used for respiration, which produces energy, CO2 and water After we eat food the food is broken down by the
digestive system and then it mixes with oxygen
to produce blood. PERCH HUMANS BOTH BOTH DIGESTIVE SYSTEMS' PURPOSES ARE TO BREAK DOWN FOOD TO BUILD CELLS AND GIVE THE BODY ENERGY. ESOPHAGUS Located at the enterior
end of the body cavity, the
esophagus is a short, straight tube
leading from the oropharynx to the
stomach. STOMACH The stomach is a larger, thick
walled U shaped tube. Food breakdown
by chemical means begins here. INTESTINES Esophagus: Stomach: Small Intestine: Mouth: Large Intestine: Liver: Pancreas: SMALL INTESTINE- Food entering the small intestine is already liquid from the stomach. The small intestine absorbs almost all of the nutrients you get from foods into your bloodstream. The walls of the small intestine make digestive juices, or enzymes, that work together with enzymes from the liver and pancreas. LARGE INTESTINE- The large intestine is about five feet long. The large intestine absorbs water and salts from the material that has not been digested as food, and gets rid of any waste products left over. What's left is fiber,dead cells shed from the lining of your intestines, salt, bile pigments, and water. INTESTINES The intestine forms an S shaped loop. The intestine extends directly to the anus. LIVER Situated anterior to the stomach. Helps carry nutriets to the body. GALL BLADDER The gall bladder drains bile from the liver, and
opens by a number of ducts into the intestine. Bile is
necessary for proper digestion of fats. PANCREAS The pancreas is embedded in the liver. The pancreas secretesdigestive enzymes into the intestine. SPLEEN Lying on the posterior surface of the stomach, the spleen is a football shaped organ. It functions in the maintenance of the blood cells. If the digestive system stops working, the food will not be digested. The nutrients will not be absorbed through the blood stream and will not reach the cells. If the cells of the body don't get nutrients, it will not be able to regulate growth and metabolism to gain energy. The person will loose weight. If food in the body that is not digested is sitting around in the body, it will make toxins, which can make the blood toxic and can lead to disease. YOU WILL DIE IF YOUR DIGESTIVE SYSTEM STOPS WORKING! The first portion of the alimentary canal that recieves food and creates saliva - an important part of digestion. Consists of a muscular tube through which food passes from the pharynx to the stomach. Functions as an important organ of the digestive tract. Secretes protein-digesting enzymes and strong acids to aid in food digestion. through smooth muscular contortions before sending partially-digested food to the small intestines. The small intestine absorbs almost all of the nutrients you get from foods into your bloodstream. The large intestine absorbs water and salts from the material that has not been digested as food, and gets rid of any waste products left over. The liver is a vital organ needed to survive. Its jobs include detoxification, protein synthesis, and production of biochemicals necessary for digestion. The pancreas produces several important hormones, including insulin & glucagon. These enzymes help to further break down the carbohydrates, proteins, and lipids.
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