Internet Challenge #1-Internet Challenge Academy III The Human Body Answers   backbone vertebrae Cartilage central support 26 true It allows the spine to support and balance the body on only two legs. Back problems occur. Discs start to wear away, vertebrae come out of place, your back gets stiff and it's difficult to move. Sternum The breastbone is linked to the bones that make up the ribs. false It forms a bony framework known as the thoracic case which protects our ribs. 12 It's necessary so that we can breathe properly. Ribs 8-12 12 vertebrae, 24 ribs and a breastbone divided in three parts. The rib cage protects your heart and lungs from being bumps and knocks. [students' individual drawings] hand It allows us to balance on our feet. 7 bones, tarsal phalanges It helps to support our body's weight. Metacarpus Phalanges 3 phalanges; 2 So that we can flex our fingers. false The hipbone helps us stand upright and move. It supports much of your body's weight. Your bones begin to join together. femur fibia shin bone false knee cap three bones: ulna, radius and humerus elbow ball and socket mineral salts, water and tissue bone marrow true food, oxygen and minerals strongest We can perform more than one kind of motion. door bend and straighten (any one of the following) elbow, knee, ankle, joints between fingers twisting and turning movements shoulder and hip shoulder joint saddle You have extra long ligaments in your joints and can bend them farther than usual.s Part II 50% 640 True True If we don't provide our muscles with enough oxygen and food for energy, then we might feels spasms or cramps. stomach, intestines, blood vessels and bladder involuntary True True No It communicates through the spinal cord and the nerves. one inch thick; thinner than a human hair brain; body nerve cells (or neurons); communication system functioning No Blood Pituitary gland It produces the hormone that controls growth. More of the hormone from the pituitary gland is released into your blood when you're asleep. 5 true brain   Part III digestion (any two answers) mouth, stomach, small intestines, large intestines, gall bladder, esophagus, pancreas, and liver back teeth 32 saliva; starch Your food goes to the stomach. acids Your food leaves your stomach a little bit a time. small breaking down the food squeezing motion It's a wavelike muscular contraction motion that helps move food down the digestive system. Villi are millions of fingers that line the small intestines. They absorb the chemicals that we need from food into our body. large intestines small intestines large intestines 20 hours below the stomach (a) It produces pancreatic juice that contains digestive enzymes. (b) It secretes insulin into the blood. liver Three pounds; eight inches long The liver stores a form of glucose called glycogen. Vitamin A bile gallbladder bile True The nasal cavity is divided into two passageways. Tissue that covers the wall of the nasal cavity contains blood vessels which warm the air as you breathe. Moisture is added to the air by special cells in the walls of the nasal cavity. Air is warmed and moistened before it reaches your lungs. Your breath contains water vapor and carbon dioxide. As water vapor meets cold air, it condenses and turns into tiny droplets of liquid water which looks like white puffs of stream. windpipe bronchi alveoli 300 million oxygen oxygen footballs Part IV The Circulatory and Urinary Systems heart, arteries, capillaries and veins aorta oxygen tough, elastic / away oxygen the heart As blood is being returned to the heart, it is under less pressure. False True team lungs / oxygen the rest of your body [students' individual drawings] 1,000 fist no Yes Blood has a salty taste. 10.6 pints 8,000 white blood cells, 250,000 platelets and 5 million red blood cells filter 2 kidneys / in the middle of your back at about the location of your elbows It goes to the kidneys. It goes to our kidneys to be cleaned. It travels through our body. about 33 gallons of fluid filters 1/2- 2 cups 96% true biceps trachea acids pancreas mandible vertebrae inhale [students' own sentence] [students' own sentence] [students' own sentence] Part V three pounds 2.5 cm (a) sclera; (b) iris; (c) pupil The pupil's job is to open and close in order to let light into your eye. In a dark room, your pupil gets bigger to let more light into your eye. closed fist 157. the left side 158. The left side of your lung is smaller because of the room needed in the chest cavity for your heart. 159. The purpose of the intestines is to take the partially digested food land convert it into energy. 160. It's important to drink a lot of water when you're outside in the heat so that you don't become dehydrated. 161. Dialysis helps keep a person alive whose kidneys are not functioning properly. Dialysis is similar to having an artificial kidney. It removes the excess fluids and some proteins out of the body. 10% Hepatitis is an inflammation or swelling of the liver. One way is to always wash your hands after you go to the bathroom. The body needs more bile. mechanical digestion Mechanical digestion refers to the biting, chewing and grinding processes of the food by the mouth. four / stomach stretch chyme [Extra Credit: students' own compositions]