Transcript Unit XIV: Excretion

Unit XIV: Excretion
Removal of Metabolic Wastes
of metabolic wastes
A build up wastes would become ________ to the organism
Those wastes maybe be _____________________________
___________________________________________
A. Metabolic Wastes
material made from the substances that are utilized by
cells
a) ___________________________________________
b) _________________________________________________________
c) _________________________________________________________
d) _________________________________________________________
___________________________________________
e)
_________________________________________________________
*feces is not considered a metabolic waste because is has
never entered the cells
B. Adaptations for Excretion
2. Excretion in the Hydra
- ___________ out through
1. Excretion in Protists
the ______________ very
- ____________ out through
similar to the protists
the ________________
- _______________ –
___________________ –
removes water from the
paramecium
3. Excretion in the Earthworm
- large and multicellular – most of its __________________
with the environment  ___________________________
______________________
- __________ – excretory structure found in pairs in most
of the segments
Creates ______________________________________
____________________________________________
Nephrostome – _____________________ from the body
cavity of the worm; funnel shaped with cilia
Capillaries – __________________________________
____________; also reabsorb useful materials
Bladder – _______________ until they are ready to be
released
Nephridiopore – ____________________ of the body
Nephridia is designed very similar __________________________________
4. Excretion in the Grasshopper
- Wastes enter _____________________ from the body
cavity by __________________________________
- Wastes are then ________________________________
- In the intestines ___________________________ and the
______________________________________________
- __________________________________________
does not dissolve in water  ___  ________________
excreted by insects, reptiles, birds
- ________________________________________________
C. NITROGENOUS WASTES
Formed from the _________________________________
1. ________________________
- simplest but _______________________
- Made by all organisms but has to be transformed by
organisms as not to kill them
2. ________________________
- less ______________________________________
of ___________________
- Made by __________________________, fish
3. ________________________
- least toxic, dry, does not dissolve in water
- Made by _____________, reptiles, birds
D. Human Excretory System
1. Lungs
- Lungs remove ______ and ______
- CO2 and H2O are the end products of ______________
2. Role of the Liver
a) _________________________
- removes ______________________________ - bacteria,
drugs, hormones
- returns less toxic materials to the blood to be excreted
from the body
b) _________________
- made of ______________________________________
- collected in the gall bladder and released into the
intestines
- helps digest and absorb fat
- small intestine reabsorbs much of the bile salts
- ____________ – build up of broken down hemoglobin
 turn yellow – eyes, finger nails, skin
c) ______________________
- Made from broken down amino acids
- ___________  ___________  ____________
3. Urinary System
a) __________________
- ___________ organs, “washing
machines”, 3 layers
- ______ (outer), _______ (middle),
___________ (inner)
- Remove __________________
- __________________
- ____________________ of
substances (___________)
* _______________ *
- _________________________________
- millions of nephrons in each kidney
- Blood enters the nephron from the renal artery
- _______________ – collection of _________________
- _________________________________________________
__________- (collecting duct) pushed out under _________
good and bad substances - __________________________
_______________ = filtrate – 180 L per day
- ___________ – filtrate passes into ___________ – ________
_________________________________________________
_________________________________________________
- Left over fluid is _______ – __________________________
 flows into the collecting duct
b) _____________
- ___________________ of the
_____________ the beginning
of the ureter
- tube that _________________
to the _________________
c) ______________________
- ___________ until it is time to
go to the bathroom
d) ______________
- _________________________
______________________
4. ____________
- keeps the body from _________________
- removes ______________________
_______________________________
______________ – takes water and heat of the skin
“standing in front of the fan after gym”
5. Diseases of the Urinary System
a) ___________________
- overload _______________________________
- generally associated with _______________
- liver becomes over grown and filled with scar tissue
- can not function properly – ______________________
b) __________________
- ___________________________________________
- form stones that __________________________________
- use _________________________________
c) _______________
- _____________________
______________________
______________________
- from a build up of urea in
the blood  ____________
d) _______________
- used to __________________
- machine that ___________________
– ____________________