digestive and urinary system

mechanical digestion

breaks large pieces in smaller ones (teeth)

chemical digestion

breaks into simple compounds to be absorbed (acids, enzymes)

peristalsis

smooth muscle contractions to push food through

salivary glands

secrete saliva, dissolves food to be tasted

pharynx

connects mouth to esophagus

esophagus

connects pharynx to stomach

stomach

mixes food with gastric juices (acid, enzymes)

small intestine

complete digestion and absorption of nutrients (mix with bile and pancreatic juices)

large intestine

absorbs water and electrolytes and forms feces

rectum

stores feces

liver

removes toxic substances, produces bile (breaks down fat)

pancreas

secretes digestive enzymes

gall bladder

stores and releases bile into small intestine

kidneys

bean-shaped organs that filter waste and water from blood, and forms urine

nephrons

filtering units of kidney

filtration (urine formation)

blood pressure pushes water and solutes into nephrons

reabsorption (urine formation)

vital nutrients reabsorbed into the blood

secretion (urine formation)

excess waste removed from blood to become urine

ureters

tubes transport urine from kidneys to bladder

urinary bladder

hollow muscular organ that stores urine

urethra

moves urine from bladder to outside