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Chapter 38 - Digestive and Excretory Systems
Across
5. process in which liquid is taken back into a vessel
6. mixture of stomach fluids and food produced in the stomach by contracting stomach muscles
8. large muscular sac that continues the mechanical and chemical digestion of food
10. digestive organ in which most chemical digestion takes place
12. term used by scientists to measure the energy stored in foods; 1000 calories; also called a kilocalorie
13. large organ just above the stomach that produces bile, a fluid loaded with lipids and salts
14. section of the nephron tubule that conserves water and minimizes the volume of urine
15. enzyme in saliva that breaks the chemical bonds in starches
16. blood-filtering unit in the renal cortex of the kidney
Down
1. gland that produces hormones that regulate blood sugar; produces enzymes that break down carbohydrates, proteins, lipids, and nucleic acids; and produces sodium bicarbonate, a base that neutralizes stomach acid
2. rhythmic muscular contractions that squeeze food through the esophagus into the stomach
3. cup-shaped structure in the upper end of a nephron that encases the glomerulus
4. process by which a liquid or gas passes through a filter to remove wastes
7. organic molecule that helps regulate body processes
9. small network of capillaries encased in the upper end of a nephron; where the filtration of blood takes place
11. folded projection that increases the surface area of the walls of the small intestine