Term | Definition |
Integumentary- | Skin |
Skin- | 1.)Provides physical and chemical-(NaCl in sweat;enzymes)barrier against pathogens 2.) controls body temp - hot= sweat, cold = shiver 3.) protects from UV-melanin 4.) Keratin- water proofs skin 5.) colleagan- gives skin elasticity |
Epidermis- | top layers only 1 or 2 cells thick, dead skin |
Dermis- | "true skin". ex; smooth muscle, nerves, blood vessels, fat cells, oil glands, sweat glands, pores, hair follicles. |
4 sense receptors- | hot-cold-pain-and, pressure |
Digestive System- | everything we do requires energy, food=energy, puts food into form cells can use. |
3 basics- | carbs-protein-fats |
mechanical- | physical change- teeth change shape- grind, tear food. |
chemical- | changes the food w/ acid-hydrochloric acid--enzymes,base |
Pathway of Digestion- | mouth, esophagus-peristalsis, stomach, small intestine-gallbladder-pancreas, (large intestine) |
Mouth- | food is broken down into small bits and mixed w/ saliva- made of water, mucus, and enzymes.
★carbs are broken down, complex carbs are broken down into simple sugars (glucose) |
Esophogus | muscular tube that connects mouth to the stomach |
Peristalsis | series of muscle contractions that pushes food down toward the stomach |
Stomach | main site protein digestion; physical digestion☚smooth muscle;chemical digestion☚gastric juice |
small intestine | site of lipid digestion; fat is hard to digest-gets help from gallbladder- which makes bile- a base to help digest fat |
any nutrients that have been taken from food leaves and goes to blood by | villi |
Villi | small finger like prohections that nutrients to blood. line in side wall of small intestine |
(large intestine) | -no digestive function
-anything that is nutritional waste |