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A&P Chapter 30 The Urinary System
 

A&P Chapter 30 The Urinary System

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    A&P Chapter 30 The Urinary System A&P Chapter 30 The Urinary System Presentation Transcript

    • THE URINARY SYSTEM Chapter 29 A&P
    • OBJECTIVES
      • Describe the purpose and function of the urinary system
      • Identify the organs and the function of each
      • List 3 processes involved in the production of urine
      • Normal constituents of urine.
      • Common disorders
      • Lifespan considerations
      • Case study
    • INTRODUCTION
      • The urinary system consists of organs that produce and excrete urine from the body.
      • Urine contains waste: mostly excess water, salts and nitrogen compounds.
      • Primary organs are the kidneys
      • Normal adult bladder can store up to .5 liters.
      • Also responsible for regulating blood volume and blood pressure.
      • Regulates electrolytes.
    • ORGANS OF THE URINARY SYSTEM
      • The components of the urinary system include :
      • the kidneys
      • the ureters
      • the urinary bladder
      • the urethra.
    • MALE URINARY SYSTEM
    • KIDNEYS
      • The kidneys are bean-shaped organs located at the back of the abdominal cavity.
      • They lie on either side of the spinal column.
      • This area is known as the flank area and is against the muscles of the back.
      • The external kidney has a notch at the concave border known as the hilum.
      • The hilum is the entrance for renal artery, veins, nerves and lymphatic vessels.
    • INTERNAL STRUCTURE OF THE KIDNEY
      • The cortex is the outer layer; arteries, veins, convoluted tubes and glomerular capsules
      • The medulla is the inner layer; renal pyramids
    • NEPHRONS
      • 1 million nephrons
      • The functional unit of the kidney
      • Remove waste products of metabolism from the blood plasma.
      • Waste products are urea, uric acid, creatinine, sodium, potassium chloride and ketone bodies.
    • URETERS, BLADDER AND URETHRA
      • Ureters -tubes that carry newly formed urine from the bladder to the kidneys.
      • Bladder -muscular sac that serves as a reservoir for urine; bladder stretches to accommodate urine.
      • Urethra - tube extends from the bladder to the external opening of the urinary system, the urinary meatus
    • URINE
      • The formation of urine has 3 processes, filtration, reabsorption and tubular secretion.
      • Urine consists of 95% water and 5% solid substances.
      • The need to urinate is usually felt at 300-350ml of urine in the bladder.
      • Typically 1000-1500 mL is voided daily.
      • Observations of urine?
    • COMMON DISORDERS
      • Cystitis- inflammation of the bladder “honeymoon disease”
      • Glomerulonephritis- a type of kidney disease
      • Incontinence- stress, urge, overflow, functional, reflex and mixed
      • Kidney stones- renal calculi caused my mineral salt deposits in the kidneys
      • Polycystic kidney disease- cysts develop in the kidneys
      • Pyelonephritis- infection of the kidney and renal pelvis.
      • Renal Failure- kidney do not function as they should
    • LIFESPAN CONSIDERATIONS
      • Child
      • At 10 weeks gestation the kidney begin to form
      • Newborns kidneys are not able to concentrate urine
      • Kidneys are more susceptible to trauma
      • Diapers- more susceptible to UTI
      • Older Adult
      • Kidney lose mass and the blood vessels degenerate
      • Kidneys lose their ability to filter
      • Dehydration can happen more quickly
      • Electrolyte balance happens more quickly
      • Loss of muscles tome in urinary structures
      • Decreased bladder capacity
    • CASE STUDY
      • What substance was found in his urine?
      • If he could not pass the kidney stone, what treatment would have to be done?
      • What types of dietary restrictions should be followed?
    • THE FAR SIDE