University:
Nevada State University
Course:
BIOL196 | Principles of Modern Biology I
Academic year:

2020
Views:

264

Pages:

6
Author:

Leilani Contreras

Urinary System 1. Color and Label the Urinary System. /14 Kidney (brown) Inferior Vena Cava (blue) Bladder (yellow) Urethra (orange) Ureters (green) Aorta (red) Renal Vein (purple) 2. Label the kidney. /9 renal cortex / major calyx / renal pelvis / renal vessels / renal pyramid / minor calyx renal medulla / renal capsule / Interlobular artery / ureter 3. Label the nephron. /7 Proximal tubule, BowmanÕs capsule, Glomerulus, Distal Tubule, Loop of Henley, Collecting Tubule, To Ureter 4. Match the organ with the function in the table below. /11 Kidney; cortex; ureter; bladder; renal vein; urethra; capsule; medulla; renal pelvis; renal artery; sphincter Organ Function Urethra Carries urine from the bladder to the outside of the body Renal Vein Carries deoxygenated blood away from the kidney Medulla The inner region of the kidney Sphincter Muscle that opens to allow urine to be removed from bladder The outer region of the kidney Renal Artery Carries oxygenated blood to the kidney Renal Pelvis The part of the kidney that collects the urine before it passes down the ureter The tough fibrous coat around the kidney Bladder Stores urine before it is removed from body Ureters The tube that carries urine away from the kidney Kidney Converts blood to urine 5. Arrange these parts of the kidney tubule in the order in which the fluid that is being converted into urine passes through them. /6 collecting duct (CD); loop of Henle (LH); distal convoluted tubule (DCT); glomerulus (G); proximal convoluted tubule (PCT); BowmanÕs capsule (BC) BC PCT LH CT CD 6. Describe and explain the importance of each of the following processes. /3 Process Description Pressure filtration (glomerular filtration) This process starts when our blood enters to the afferent arteriole and the glomerulus where water and small molecules move to the inside of the glomerular capsule, while blood cells and large molecules are kept in the glomerulus, the substances that are filtered by this process are water, nitrogenous wastes, nutrients and salts, while the substances that are not filtered are blood cells, platelets, and plasma proteins, these substances leave the glomerulus through the efferent arteriole. Tubular secretion This process occurs when ions and molecules are passively and actively reabsorbed from the nephron to peritubular capillaries, in the presence of salt and plasma protein our body will maintain osmolarity and when the ions of sodium are absorbed chloride ions and water molecules are absorbed as well. Tubular reabsorption This process is another way that our body has to remove substances by active transport from the blood to peritubular capillaries, these substances are hydrogen ions, potassium ions, creatinine, and drugs such as penicillin. Reflection Each team member has to write a 60-word opinion about how they can take better care of their kidneys and heart in the long run and if they would be willing to participate in a kidney exchange to help a member of their family get a new kidney. Why or why not?