Site Mouth Stomach Small intestine (from pancreas) Small intestine Site Mouth Stomach Small intestine (from pancreas) Small intestine Enzyme Role in Digestion Section 38-2 Salivary amylase Pepsin Amylase Trypsin Lipase Maltase, sucrase, lactase Peptidase Breaks down starches into disaccharides Breaks down proteins into large peptides Continues the breakdown of starch Continues the breakdown of protein Breaks down fat Breaks down remaining disaccharides into monosaccharides Breaks down dipeptides into amino acids.
Mouth Esophagus Stomach Small intestine Large intestine Rectum Anus
Filtration – everything but cells are filtered out of the blood (passive). Reabsorption – water and nutrients are absorbed back into the blood (active). What remains behind is urine. Excess water Salts Urea
Kidney Nephron Cortex Medulla Renal artery Renal vein Ureter To the bladder Bowman’s capsule Glomerulus Capillaries Collecting duct To the ureter Loop of Henle Artery Vein Section 38-3
Having two kidneys provides a backup. If both fail, a transplant or dialysis is needed.
Vein Artery Shunt Air detector Dialysis machine Blood pump Blood in tubing flows through dialysis fluid Used dialysis fluid Compressed air Fresh dialysis fluid Section 38-3
Excretes sweat: water, salt and urea. Excretes heat – helps maintain homeostasis.