Notes 7 - Defecation referring to the elimination of feces from body undigested food bacteria Excretion Elimination of digestible waste 4 Excretory

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Defecation : referring to the elimination of feces from body; undigested Excretion : Elimination of digestible waste - 4 Excretory Organs 2. Liver: Excretes bile pigments into bile = the yellow pigment found in urine, celled urochrome 3. Lungs: Excrete carbon dioxide as a gas; metabolic waste product [water is lost = water vapor] 4. Kidneys: Excrete nitrogenous wastes in urine Urinary System Renal artery, renal vein, aorta, inferior vena cava 1. Kidneys produce urine 2. Ureters transport urine 3. Urinary bladder stores urine 4. Urethra passes urine outside Helps to regulate: - Water content of body - Blood volume of body - pH of blood [regulated] Kidneys: 3 regions 1. Cortex: nephrons 2. Medulla: renal pyramids 3. Pelvis Nephrons : functional unit of kidneys - Made-up of glomerular capsule that surrounds the glomerulus [massive amount of capillaries] Glomerular capsule : Filters material from the blood Glomerulus: Blood pressure primarily accounts for filtration; composed of capillaries
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/11/2008 for the course BI SC 004 taught by Professor Mitchellameliav during the Spring '08 term at Pennsylvania State University, University Park.

Page1 / 2

Notes 7 - Defecation referring to the elimination of feces from body undigested food bacteria Excretion Elimination of digestible waste 4 Excretory

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online