Download Day 4 Urine obj. 6

Today’s Agenda
• Return Papers
• Primary Components of the urinary system
– Via video (partial)
• Kidney Anatomy
– External features
– Internal features
Work of the Kidneys (video)
Listen for the functions of the urinary
system
Excretory System Function
• 1. Collect water and filter body fluids
• 2. Remove & concentrate wastes to maintain
homeostasis
• Eliminate excretory products from the body
1 = urethra
2 = ureter
3 = bladder
4 = kidney
Urine pathway is:
4,2,3,1
1 = ureter
2 = renal pelvis
3 = cortex
4 = medulla
5 = renal pyramid
6 = renal column
7 = renal papillae
8 = renal calyx
1
5
2
4
8
Day 2
• Go back over the gross antomy of the
excretory system
• Obj. 2 trace flow of blood through excretory
(fill in two diagrams in note packet and
color the second one showing renal blood
vessels)
Obj. 3 parts of the nephron
Practice obj. 3
Quiz over nephron anatomy (with word bank
on board)
Excretion Unit Day 3
While we may not be able to
control all that happens to us,
we can control what happens
inside us.
Ben Franklin
Day3
1. Recap and then obj. 5, 6, 7 notes
2. Review the parts of the nephron
via group work labeling at lab
stations. Complete kidney
coloring at lab stations
3. Notes on Objectives 9-12
Adam’s excretion
Blood flows to the kidney to be filtered forming
125 ml of filtrate per minute (48 gallons/day)
Obj. 5, See transparency—filtration, resorption,
concentration
Obj. 6 Aldosterone
• Hormone made by the adrenal gland
• Causes sodium and water to be resorbed
(kept in body)
• Aldosterone, along with atrial natriuretic
factor and antidiuretic hormone regulate
sodium and water in the urine.
Obj. 7 Urine Concentration
• The more water that is excreted, the more
dilute the urine will be.
• Diuretics increase the amount of water in
the urine.
• Diuretics include chemicals such as caffeine
and nicotine increase urine output by
affecting Na absorption. Alcohol
suppresses ADH.
Move to lab area and complete the
labeling of the nephron and its
associated blood vessels.
Turning in one per group…be
careful in labeling.
Finish coloring kidney if needed.
Composition of plasma, nephric filtrate, and urine (each in g/100 ml of
fluid). These are representative values. The values for salts are especially
variable, depending on salt and water intake.
Component
Plas
ma
Nephric
Filtrate
Urea
0.03
0.03
%
Urin Concentr
Reclaim
e
ation
ed
1.8
60X
50%
Uric acid
0.00
4
0.004
0.05
12X
91%
Glucose
0.10
0.10
None
-
100%
Amino acids
0.05
0.05
None
-
100%
<1-4X
99.5%
-
-
Total inorganic salts
0.9
0.9
<0.93.6
Proteins and other
macromolecules
8.0
None
None
Obj. 9 Abnormal Urine
Components
•
•
•
•
•
Glucose ---- diabetes
Albumin protein---injury or infections
White blood cells---infection
Red blood cells----infection, trauma
Bacteria---infection
Lithotripsy machine to shatter kidney stones with sound waves
Excretion Unit Day 4
Don’t carry a grudge.
While you’re carrying the
grudge, the other guy’s out
dancing.
Buddy Hackett
Today’s Agenda
• Urinalysis prelab
–Safety precautions
–procedures
• Urinalysis lab
• Stop & clean up
Objective 10
• URETERS--slender tubes
• 10-12 inches long
• convey urine from kidney to
bladder.
• Peristalsis moves the urine
Objective 10 continued
• Renal calculi
or kidney
stones may
obstruct the
ureters.
Objective 11 Urinary Bladder
• Smooth collapsible, muscular
sac.
• Trigone--outlines the three
openings. (2 ureteral, one
urethral)
Objective 12: Urethra
• Thin walled, muscular tube that
drains urine from the bladder.
• (see Diagram)
Objective 4
Uric Acid stone
Calcium oxalate & blood
Limit stones by drinking
water and limiting caffiene