en CR Knowledge Acquisition Activity 28 Epithelial tissue : Lines the interior and exterior body surfaces Connective tissue : Provides support for the body and connects its parts Nervous tissue : Carries messages in the form of nerve impulses throughout the body Muscle tissue : Responsible for voluntary and involuntary movement Homeostasis : A controlled, stable internal environment Feedback inhibition : Process in which a stimulos produces a response that opposes the original stimulus Cell : Basic unit of structure and function in living things Calorie : The amount of heat needed to raise the temperature of 1 gram of water by 1 degree celsius Carbohydrate : The body's main source of energy Fats : Formed from fatty acids and glycerol Proteins : Supply raw materials fo growth and repair of structures such as skin and muscle Vitamins : Organic molecules that the body needs in very small amounts Minerals : Inorganic nutrients the body needs in small amounts Ingestion : The process of putting food into your mouth Mechanical digestion : The physical breakdown of large pieces of food Chemical digestion : During it the enzymes break down food into molecules the body can use Food molecules : Absorbed into the circulatory system by cells in the small intestine Saliva : Helps to moisten the food and make it easier to chew Enzyme : A substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction Amylase : An enzyme that breaks down starches into sugars Esophagus : The tube leading from the pharynx to the stomach Peristalsis : Contractions of smooth muscles Stomach : A large muscular sac that continues digestion Pepsin : Breaks proteins into smaller plypeptide fragments Chyme : Mixture with an oatmeal-like consistency Small intestine : Organ in which most chemical digestion and absorption of food takes place Villi : Fingerlike projections Microvilli : Tiny projections that cover the villi Large intestine : Also called colon Feces : Concentrated waste material

Knowledge Acquisition Activity

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Across:

3.	Responsible for voluntary and involuntary movement
4.	Contractions of smooth muscles
7.	Basic unit of structure and function in living things
10.	Mixture with an oatmeal-like consistency
11.	Fingerlike projections
13.	Formed from fatty acids and glycerol
14.	An enzyme that breaks down starches into sugars
16.	Organic molecules that the body needs in very small amounts
19.	Concentrated waste material
20.	Process in which a stimulos produces a response that opposes the original stimulus
21.	A controlled, stable internal environment
23.	The amount of heat needed to raise the temperature of 1 gram of water by 1 degree celsius
24.	A substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction
26.	Absorbed into the circulatory system by cells in the small intestine
27.	Also called colon

Down:

1.	Carries messages in the form of nerve impulses throughout the body
2.	Lines the interior and exterior body surfaces
5.	Organ in which most chemical digestion and absorption of food takes place
6.	The physical breakdown of large pieces of food
8.	During it the enzymes break down food into molecules the body can use
9.	Inorganic nutrients the body needs in small amounts
12.	Helps to moisten the food and make it easier to chew
15.	A large muscular sac that continues digestion
17.	The body's main source of energy
18.	The process of putting food into your mouth
22.	Supply raw materials fo growth and repair of structures such as skin and muscle
24.	The tube leading from the pharynx to the stomach
25.	Breaks proteins into smaller plypeptide fragments

Knowledge Acquisition Activity

Across:

3.	Responsible for voluntary and involuntary movement
4.	Contractions of smooth muscles
7.	Basic unit of structure and function in living things
10.	Mixture with an oatmeal-like consistency
11.	Fingerlike projections
13.	Formed from fatty acids and glycerol
14.	An enzyme that breaks down starches into sugars
16.	Organic molecules that the body needs in very small amounts
19.	Concentrated waste material
20.	Process in which a stimulos produces a response that opposes the original stimulus
21.	A controlled, stable internal environment
23.	The amount of heat needed to raise the temperature of 1 gram of water by 1 degree celsius
24.	A substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction
26.	Absorbed into the circulatory system by cells in the small intestine
27.	Also called colon

Down:

1.	Carries messages in the form of nerve impulses throughout the body
2.	Lines the interior and exterior body surfaces
5.	Organ in which most chemical digestion and absorption of food takes place
6.	The physical breakdown of large pieces of food
8.	During it the enzymes break down food into molecules the body can use
9.	Inorganic nutrients the body needs in small amounts
12.	Helps to moisten the food and make it easier to chew
15.	A large muscular sac that continues digestion
17.	The body's main source of energy
18.	The process of putting food into your mouth
22.	Supply raw materials fo growth and repair of structures such as skin and muscle
24.	The tube leading from the pharynx to the stomach
25.	Breaks proteins into smaller plypeptide fragments

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