notes 7 - Defecation referring to the elimination of feces...

Info icon This 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 food & bacteria Excretion : Elimination of digestible waste - 4 Excretory Organs 1. Skin: Excretes water & salt into perspiration 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:
Image of page 1

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

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

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern