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BJU Life Science 26
Bob Jones Life Science - Chapter 26
| Question | Answer |
|---|---|
| accessory organs | An organ that secretes substances that are carried through ducts into the alimentary canal. |
| alimentary canal | The digestive tract. |
| alveoli | The microscopic sacs in which the exchange of gases takes place in the lungs. |
| assimilation | The process by which living cells convert nutrients into cellular structures. |
| basal metabolic rate | The rate at which an organism uses energy while inactive. |
| bile | A substance secreted by the liver; helps to separate lipids into small droplets to aid digestion. |
| bronchi | The two branches of the trachea; function in carrying air to and from the lungs. |
| bronchioles | One of many tiny branches from the bronchi; carries air to and from alveoli within the lung. |
| calories | A unit used to indicate the amount of energy released from food during cellular respiration. |
| chemical digestion | Chemically breaking down food into substances that the body can use. |
| chyme | The semiliquid mixture of digestive juices and partly digested food in the stomach and small intestine. |
| diaphragm | The muscle that separates the thorax from the abdomen in mammals and humans; aids breathing. |
| digestion | The breaking of food into smaller substances that the body's cells can use. |
| digestive system | A group of tissues and organs that work together to digest an organism's food. |
| epiglottis | A thin flexible flap in front of the larynx; folds over and block the glottis during swallowing. |
| esophagus | A part of the digestive tract; connects the pharynx and stomach in humans. |
| glottis | The space between the vocal folds. |
| large intestine | The part of the digestive tract that extends from the end of the small intestine to the anus; absorbs water and minerals. |
| larynx | The short passageway that leads from the pharynx to the trachea; the sound-producing organ. |
| liver | The organ that produces bile, helps to regulate substances in the blood, and stores minerals and vitamins. |
| lungs | An organ that exchanges gases between the atmosphere and the blood. |
| mechanical digestion | The process of breaking food into smaller pieces and mixing it with the digestive juices. |
| metabolic rate | The rate at which an organism uses energy. |
| metabolism | The total of all reactions occurring in a living organism. |
| mucus | A thick sticky substance secreted by the mucous membranes in the human body. |
| peristalsis | A series of muscular contractions that moves food along the alimentary canal. |
| pharynx | The passageway between the mouth and the nose, esophagus, and larynx; also called the throat. |
| portal vein | The blood vessel that carries blood from the digestive organs to the liver. |
| respiratory system | The system of organs that obtain oxygen from the air and eliminate carbon dioxide from the body; in humans, the lungs, trachea, and other associated organs. |
| saliva | The watery fluid secreted into the mouth by the salivary glands that moistens foods and begins starch digestion. |
| salivary glands | A digestive gland that secretes saliva into the mouth. |
| small intestine | The digestive organ in which most of the digestion and absorption of food occurs. |
| thorax | Chest cavity |
| trachea | The tube that carries air between the pharynx and the lungs. |
| villi | Microscopic fingerlike structures that line the wall of the small intestine. |
Created by:
marchscience
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