*Question*
Q: What connection is required for a newborn baby to begin breathing? Read this paragraph and choose the correct option from the provided answers: Near the time of birth, the amniotic sac breaks in a gush of fluid. Often when this occurs, women say that their "water broke. " Labor usually begins within a day of this event. Labor involves contractions of the muscular walls of the uterus, which cause the cervix to dilate. With the mother's help, the contractions eventually push the fetus out of the uterus and through the vagina. Within seconds of birth, the umbilical cord is cut. Without this connection to the placenta, the baby cannot exchange gases, so carbon dioxide quickly builds up in the baby's blood. This stimulates the brain to trigger breathing, and the newborn takes its first breath. See Labor and Birth - BabyCenter Video at http://www. youtube. com/watch?v=BgZ5z6RB06c for additional information. Choices: - connection to a heat source - connection to a ventilator - connection to the father - connection to the placenta A:
**Answer**
connection to the placenta

*Question*
Q: A diver's air bubbles increase in size as he approaches the surface because what decreases? Read this paragraph and choose the correct option from the provided answers: A scuba diver, like the one in Figure below , releases air bubbles when he breathes under water. As he gets closer to the surface of the water, the air bubbles get bigger. Boyle's law explains why. The pressure of the water decreases as the diver gets closer to the surface. Because the bubbles are under less pressure, they increase in volume even though the amount of gas in the bubbles remains the same. Choices: - water direction - water weight - water energy - water pressure A:
**Answer**
water pressure

*Question*
Q: Where is the food stored before being mixed with the chyme? Read this paragraph and choose the correct option from the provided answers: Chemical Digestion The fundus plays an important role, because it stores both undigested food and gases that are released during the process of chemical digestion. Food may sit in the fundus of the stomach for a while before being mixed with the chyme. While the food is in the fundus, the digestive activities of salivary amylase continue until the food begins mixing with the acidic chyme. Ultimately, mixing waves incorporate this food with the chyme, the acidity of which inactivates salivary amylase and activates lingual lipase. Lingual lipase then begins breaking down triglycerides into free fatty acids, and mono- and diglycerides. The breakdown of protein begins in the stomach through the actions of HCl and the enzyme pepsin. During infancy, gastric glands also produce rennin, an enzyme that helps digest milk protein. Its numerous digestive functions notwithstanding, there is only one stomach function necessary to life: the production of intrinsic factor. The intestinal absorption of vitamin B12, which is necessary for both the production of mature red blood cells and normal neurological functioning, cannot occur without intrinsic factor. People who undergo total gastrectomy (stomach removal)for life-threatening stomach cancer, for examplecan survive with minimal digestive dysfunction if they receive vitamin B12 injections. The contents of the stomach are completely emptied into the duodenum within 2 to 4 hours after you eat a meal. Different types of food take different amounts of time to process. Foods heavy in carbohydrates empty fastest, followed by highprotein foods. Meals with a high triglyceride content remain in the stomach the longest. Since enzymes in the small intestine digest fats slowly, food can stay in the stomach for 6 hours or longer when the duodenum is processing fatty chyme. However, note that this is still a fraction of the 24 to 72 hours that full digestion typically takes from start to finish. Choices: - hemispherical of the stomach - histopathology of the stomach - top of the stomach - fundus of the stomach A:
**Answer**
fundus of the stomach

*Question*
Q: The law of conservation mass states that matter cannot be created or what? Read this paragraph and choose the correct option from the provided answers: The law of conservation of mass states that matter cannot be created or destroyed. Choices: - changed - moved - observed - destroyed A:
**Answer**
destroyed