biology

Across

1. it comes from food and it’s what powers up our bodies
4. these supply raw materials for growth and repair structures such as skin and muscles:
5. organ that continues the chemical and mechanical digestion of food.
8. it describes the relatively constant internal physical and chemical condition that organisms maintain despite changes in internal and external environments
11. organ system that produces gametes, and in females it nurtures and protects developing embryo
15. mixture of enzymes and partially-digested foods
18. organ system that works with skeletal system to produce voluntary movement
20. they help the body absorb fat-soluble vitamins and are a part of cell membranes, nerve cells, and certain hormones
21. organ system that guards against infections, injuries, and ultraviolet radiation from the sun
22. fingerlike projections in the small intestine
24. a group of different types of tissues that work together to perform a single function or several related functions
25. fats that contain only one double bond
28. it is the process in which a stimulus produces a response that opposes the original stimulus
32. supplied from food, our body uses it to build and repair body tissues
37. organ system that brings in oxygen needed for cellular respiration and removes excess carbon dioxide from the body
39. mineral that helps bone and tooth formation, and an acid-base balance
41. organ system that controls growth, development and metabolism
43. a way of digestion in which the physical large pieces are broken down into smaller pieces
45. the first step in the digestive system
46. organ that produces bile, converts ammonia into urea, and regulates the level of glucose we consume.
47. mineral that maintains bone and tooth structure

Down

1. food passes through here and into the stomach
2. it is the basic unit of structure and function in living things
3. a group of cells that perform a single function
6. a type of tissue that provides support for the body and connects its parts
7. fats that contain more than one double bond
9. organ system that transports oxygen, nutrients, and hormones to cells
10. a group of organs that perform closely related functions
12. smooth muscles found in the esophagus, they help you swallow food
13. organ system that breaks down, absorbs nutrients, and eliminates wastes
14. a way of digestion in which enzymes break down food into the small molecules the body can use
16. organ system that eliminates waste products from the body
17. organ that absorbs water ad undigested material moves through and is eliminated from the body.
19. the process of putting food into your mouth
23. organ system that protects the body from diseases
25. inorganic nutrients that the body needs, usually in small amounts
26. tissue in which nerve impulses are transmitted throughout the body
27. organic molecules that the body needs in very small amounts
29. the major source of energy for our bodies
30. system that recognizes and coordinates the body’s response to changes in its internal and external environments
31. organ that produces hormones to regulate blood sugar levels
33. the most important nutrient
34. organ system that supports the body and protects internal organs
35. it breaks proteins into smaller polypeptide fragments
36. the tissue that lines the interior and exterior body surfaces
38. the first part of the small intestine, in which almost all of the digestive enzymes enter the intestine
40. enzyme found in saliva that beings to break the chemical bonds in starched, forming sugars
42. amount of heat needed to raise the temperature of 1 gram of water by 1 degree Celsius
43. tissue that allows movement of the body
44. mineral that helps bone and tooth formation, blood clotting and nerve and muscle function