| A | B |
|---|
| skeletal system | provide shape and comfort, enables you to move, protects your eternal organs, produces blood cells, stores certain meterials untill body needs them. |
| What is a femur? | longest heaviest bone in body, *Can support 1 ton, **stronger than granite and concrete |
| When is growth completed by? | age 20 |
| Bone tissue- | constantly being remade-*re-absorbed in your blood and being deposited in your bone. REplaced and remade is known as *BONE REMODELING* |
| No ________ and no ______- your skeleton doesn't need to be strong | 1)gravity 2) support |
| Which vitamins does your skel. need? | c,a,d! *Too much a&d can be toxic |
| digestion- | breaking down of food physically and chemically |
| mouth- | teeth- phys. break down food into smaller chunks |
| enamel | hardest substance in body |
| salivary glands | secretes chemical enzymes to chem break up food |
| bacteria | produces acids and tarters |
| tongue | pushes up against the roof of your mouth to push food down |
| esophagus | peristalis ( contracting musscle) forces food down |
| stomach | *stays in st. for 4-6 hrs. muscles contract in dif. directions to churn food around. HCl is in stomach. ** Food is digested but not fully absorbed yet |
| chyme | liquid that moves from stomach to first intestine. |
| gall bladder & pancreas | add enzymes that help digest the food. |
| small intestine | nutrients are dissolved by food |
| small intestine is _____ ft long | 16 |
| liver | factory that produces necessary things absorbed by the intestine. |
| rectum | where feces are stored |
| arteries | blod flows AWAY from the heart |
| veins | carry blood TO heart |
| capillaries | where nutrients and wastes are exchanged in body |
| heart | a muscle that pumps blood through arteries, NOT VEINS |
| During respiration, _____ must be supplied and _____ must be removed | supply oxygen- remove carbon dioxide |
| respiration happens in _____ | alveoli-gasses are exchanged |
| 150 ____ in each lung | alveoli |
| trachea | aka wind pipe lined with mucus and tiny hairs |
| lungs | dont have muscles and dont inflate |
| SKELETAL MUSCAL | used to move |
| CARDIAC MUSCLE | heart (CANT CONTROL) |
| SMOOTH MUSCLE | stomach, intestines, blood vesels (CANT CONTROL) |
| kidney removes 3 things | 1 water 2 ***Nitrogen(Urea) *** 3 Ions-{na+ cl- mg+ cl-} |
| To get rid of water (4) KSBD | Kidney, Sweat, Breathing, Digestive system |
| Integumentary sys includes | skin, nails, hair |
| 7 Integumentary characteristics | 1 cover & protect body 2 prevents weight loss or gain 3 prevents entry of diseases 4 skin repairs itself 5 filters sunlight 6 detects by touch 7 helps maintain body temp |
| Epidermis | dead layer filled w/ keratin |
| Dermis | main part of skin living(OUTER COATING) |
