Unformatted text preview: collect molecules from the food you eat.
5. Large intestine
1. Large intestine is shorter than the small intestine. About 1.5 meters long,
2. Absorbs water, minerals, and vitamins
3. Whatever remains is expelled.
6. Liver, gallbladder, and pancreas
1. Known as accessory organs.
2. They secrete products that are used by the digestive system
3. Gallbladder secretes bile and that breaks down fats 4. Pancreas secretes insulin, enzymes, and other substances which aid
5. Liver creates bile that is secreted by the gallbladder
3. Excretory System
1. A large amount of waste is produced as a cell carries out its daily functions.
2. The waste products are removed through the circulatory system
3. The waste products defuse from the cell into the blood plasma.
4. Blood is then filtered as it travels through the body
5. Waste is then excreted.
6. If there were no excretory system, we would die from poisoning.
7. Four organs of major importance
1. Located on dorsal side of body cavity, just below the rib cage
2. As blood travels through them, waste products are removed, in the form of a
1. The functional unit of the kidney is the nephron.
2. Where excretory and circulatory systems meet.
3. Two types of nephrons
4. Cortical Nephron
a. Loops of Henle are short
5. Juxtamedullary Nephron.
a. Loops of henle are long
1. Connects kidney to the bladder
10. Urinary bladder
1. Liquid that is removed from the blood is called urine
2. Urine is stored in the urinary bladder until it is eliminated from the body.
1. Tube from which urine is eliminated Integumentary/Immune System
1. Integumentary System
1. Includes skin, hair, nails, sweat, and oil glands
2. Has three main functions
1. Protection: provides waterproof barrier between you and the environment
2. Regulation: skin protects vital organs from extremities in temperature
1. When your hot, you sweat, when your cold, you shiver (muscles quickly
relax and contact)
3. Sensitivity: Skin contains receptors that tell you about your environment.
1. Receptors can sense five things
3. Heat 4. Cold
1. Immune System
1. Sometimes, the skin cannot protect the body from invaders
2. When the skin barrier is broken, body is open to infection
1. This can be due to scrapes, cuts, and punctures
3. Immune system fights...
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- Winter '14