Lesson 1

Lesson 1

Lesson 1 Excretory Intro Skin Lungs Liver AIM: How is the human excretory system structured to help maintain homeostasis? Bellwork: Take out HW Homework: Read pages 985-989, Q# 1-4 on

page 989 - Exam Monday 1/9 The Human Excretory System LUNGS KIDNEYS

LIVER SKIN Function: The removal of cellular waste (metabolic waste) from the human body H2O CO2 SALT

UREA Metabolic Wastes Produced by Humans By-Product of these processes H2O

Dehydration Synthesis, Respiration 2 CarbonCODioxide (CO2) Cellular Respiration SALT

Acid and Base Reactions UREA Protein Metabolism, Deamination Water (H20)

Salts Urea (nitrogenous waste) The Lungs CO2 & H2O are excreted during exhalation

The Liver Has many functions! Liver - Excretory System Function: Breaks down proteins (deamination) produces a nitrogenous waste called urea urea enters the blood stream to be removed by

the kidneys The Urea Cycle Liver - Digestive System Functions Produces bile to emulsify fats (mechanical digestion) Liver - Circulatory

System Functions Removes/ breaks down old RBCs Filters toxic chemicals (ex. alcohol & drugs) out of blood Helps maintain blood-sugar levels by storing and releasing excess glucose

Skin Functions as a 1st line of immune defense Organ of excretion

Regulator of body temp Is made of the Protector against UV

Epidermis Dermis Small amounts of urea, salt, water & other chemicals are excreted through the sweat glands in the skin! Skin Structures 13. 1.

12. 11. 10. 2. 9. 8. 3. 4.

7. 5. 6. Skin Structures Word Bank Hair Epidermis Dermis Subcutaneous layer Adipose (Fat) cells

Hair follicle Blood vessel

Melanocytes Apocrine sweat gland Eccrine sweat gland Sebaceous (oil) gland Hair erector muscle Nerves Skin Structures b - hair

a - pore h- epidermis i- dermis g hair follicle e - capillary k subcutaneous tissue f sweat gland

d fat j- erector cells muscle c nerve ending Skin epidermis subcutaneous epidermis dermis replaced

melanin melanin vessels sweat roots glands dermis

Homework: Read pages 985-989, Q# 1-4 on page 989 - Exam Monday 1/9 Lesson 2 Urinary System Kidney structure & function AIM: How is the urinary system structured

to perform excretion? Bellwork: 1) Take out HW 2) Read Kidney Thieves Homework: Worksheet - Exam Monday 1/9 Why put the victim in an ice bath? Kidneys For Sale? - YouTub

e Lower body temperature slows down chemical reactions Less chance of infection spreading, slows decomposition Can also preserve a severed limb!

THE ORGAN TRADE: A Global Black Market; Tracking the Sale of a Kidney On a Path of Poverty and Hope By LARRY ROHTER Published: May 23, 2004

When Alberty Jos da Silva heard he could make money, lots of money, by selling his kidney, it seemed to him the opportunity of a lifetime. For a desperately ill 48-year-old woman in Brooklyn whose doctors had told her to get a kidney any way she could, it was. At 38, Mr. da Silva, one of 23 children of a prostitute, lives in a slum near the airport here, in a flimsy two-room shack he shares with a sister and nine other people. ''As a child, I can remember seven of us sharing a single egg, or living for day after day on just a bit of manioc meal with salt,'' Mr. da Silva said in an interview.

He recalled his mother as a woman who ''sold her flesh'' to survive. Last year he decided that he would, too. Now, a long scar across his side marks the place where a kidney and a rib were removed in exchange for $6,000, paid by middlemen in an international organ trafficking ring. Among poor men like Mr. da Silva and others who have migrated to slums here from Brazil's parched northeastern backlands, word of the market to sell their organs spread quickly. Some who had done so were already buying houses, businesses, cars

and refrigerators. The sums being offered seemed a fortune. The minimum wage here is barely $80 a month, and work is hard to find. Many men struggle to exist on odd jobs that pay barely a dollar a day. Initially, the organ brokers paid as much as $10,000 for a kidney -- more than a decade's wages. Donors and recipients were not related, in contrast to the usual preference for legal and medical reasons. In fact, they did not even know each other. But they were linked by a trafficking ring that the authorities now say exploited two very different sets of needs -- for

money and for life itself -- at opposite ends of a tangled chain thousands of miles long. Tracing the journey of Mr. da Silva's kidney through that chain, which spanned four continents and ended in a one-bedroom apartment in Brooklyn, reveals the inner workings of a network that human rights groups say is by no means unique. Rather, they say, it is representative of a global black market for organs, including livers, kidneys and lungs, that touches dozens of countries and generates many millions of dollars a year.

In Alberty da Silva's case, the authorities here say, the organ's odyssey began with two middlemen based in this gritty port city of 1.5 million people: Gedalya Tauber, a former Israeli police officer, and his partner, Ivan Bonifacio da Silva, a retired Brazilian military police officer. The pair, since jailed on organ trafficking charges, not only handed out cash payments, the authorities say, but also arranged for the medical exams to weed out unqualified donors. They then obtained passports and airline tickets for the donors to travel to South Africa, where the transplants took place. Both countries have laws against commercial trade in organs.

''Six grand is a lot of money, especially when you don't have any,'' Mr. da Silva said when asked why he had given up his kidney. ''No one here warned us that what we were doing was illegal.'' The Urinary System Brainpop Urinary System RENAL ARTERY

RENAL VEIN KIDNEY URETER URINARY BLADDER URETHRA

URETER The Urinary System Kidneys: filter waste from blood receive blood from renal artery & return blood to renal vein made of many nephrons contain ~1 million nephrons

(functional units that filter the blood to create urine) maintain balance of water, pH, salts, & other ions maintain blood volume & blood pressure RENAL ARTERY

RENAL VEIN KIDNEY Ureters - carry urine from kidney to bladder Bladder - stores urine URETER

URINARY BLADDER URETHRA URETER Urethra - Tube through which urine exits the body Kidney (Cross Section)

2. Cortex Medulla 3. 1. 4.

Transports urine to bladder Pelvis Ureter 2) The Nephron

_________________: 1. Glomerulus cluster of capillaries where blood enters the kidneys 2. ______________ Bowmans____________:

capsule C shaped 1) structure surrounding each glomerulus. It is here 4) that materials such as urea, salts, water, glucose, & others (known as the filtrate) pass from the

blood into the nephron. 3.__________ Loop of Henle ___ __________: As the filtrate travels through this tubule, useful substances are reabsorbed into the surrounding capillaries 3) Loop of

Henle 4. Collecting duct _________________ ___________: collects the metabolic wastes filtered from the blood which

form urine and transports them to urinary bladde The Nephron (cont.) urea, salts, & some water are excreted glucose, amino acids, & most H2O are reabsorbed back into the blood

a Bowmans capsule b- renal arteriole c- glomerulus d capillaries e loop of Henle fcollecting

tubule / duct glomerulus BOTH reabsorbed reabsorbed BOTH Loop of

Henle excreted g renal vein h - corex f renal artery j - pelvis

i - medulla a - kidney c- ureter d- bladder e- urethra urinary water

cortex medulla ureter urine bladder urethra

DISCLAIMER: This is not intended to diagnose or treat any urinary issues you may be experiencing. Call your doctor!!! Homework: Worksheet - Exam Monday 1/9 Lesson 3 Excretory Malfunctions AIM: How can the excretory structures

malfunction? Bellwork: 1) Take out HW 2) Worksheet Reviewing Vocab Homework: Packet Ch 11 Excretion - Review & Exam on Monday 1/9 Excretory System Disorders 1. Gout (a type of arthritis) Cause excess uric acid (from

red & organ meats, red wine and chocolate) builds up in the joints Disruption of homeostasis arthritis-like pain Treatment/Prevention antiinflammatory meds, healthy diet, less red meat Gout 2. Kidney Stones

Cause - poor diet, high blood pressure, some are genetic Disruption of homeostasis build up of calcium, uric acid inside the kidneys (pain) Treatment meds, soundwaves to break apart stone, passes when

urinating Video - Seinfeld, Modern Family, Friends 3. Urinary Tract Infection Cause - E. coli bacteria infect the urethra Disruption of homeostasis inflammation and painful urination

Treatment antibiotics Prevention good hygiene, cranberry juice Is your urine ? DISCLAIMER: This is not intended to diagnose or treat any urinary issues you may be experiencing. Call your doctor!!! Is your urine ?

DISCLAIMER: This is not intended to diagnose or treat any urinary issues you may be experiencing. Call your doctor!!! Is your urine ? DISCLAIMER: This is not intended to diagnose or treat any urinary issues you may be experiencing. Call your doctor!!! Is your urine ?

DISCLAIMER: This is not intended to diagnose or treat any urinary issues you may be experiencing. Call your doctor!!! Is your urine ? DISCLAIMER: This is not intended to diagnose or treat any urinary issues you may be experiencing. Call your doctor!!! Homework: Packet Ch 11 Excretion

- Review & Exam on Monday 1/9

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