bio chap

1. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:28/11/2020
CHAPTER: 19

2. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:28/11/2020
LEARNING OBJECTIVES:
1. To identify the different parts of excretory system.
2. To discuss the human excretory system and formation
of urine.
3. To discuss about the Regulation of Kidney Function
Micturition
4. To outline the regulation of Role of other Organs in
Excretion and briefly about the disorders of the
Excretory
System

3. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:28/11/2020
• Human Excretory System
• Urine Formation
• Function of the Tubules
• Mechanism of Concentration of the
Filtrate
• Regulation of Kidney Function
• Micturition
• Role of other Organs in Excretion
• Disorders of the Excretory System
TOPICS:

4. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:28/11/2020

5. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:28/11/2020

6. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:30/11/2020
TYPES OF EXCRETION

7. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:30/11/2020
A
C
B
D
Identify the organisms based on their excretory product

8. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:30/11/2020

9. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:01/11/2020

10. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:30/11/2020

11. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:30/11/2020

12. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:30/11/2020
STRUCTURE OF KIDNEY

13. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:30/11/2020
PLENARY:
1. Name the excretory organ of Annelids and Platyhelminthes.
2. What do you mean by Ammonotelic animals?
3. Mention the position of kidney.
4. Name the tissue covering the kidney.
5. Define metabolism.

14. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:01/11/2020
STARTER:
1. Why is the right kidney lower in position than the left
kidney?
2. What are Columns of Bertini?
3. What is the weigh of kidney?
4. Name the excretory organ of prawn.
5. What do you mean by Uricotelic animals?

15. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:01/12/2020
STRUCTURE OF KIDNEY
KIDNEY
Centre—depression
HILUM
MEDULLARY PYRAMIDS
CALYCES
Funnel shaped str.
RENAL PELVIS
Blood vessels, nerves, lymphatic
ducts and ureter enter
projections
COLUMNS OF BERTINI
Cortex extends in between
medullary pyramids, as

16. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:01/12/2020
STRUCTURE OF KIDNEY

17. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:01/12/2020
STRUCTURE OF KIDNEY

18. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:01/12/2020
Complete the boxes(A-H):

19. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:01/12/2020
STRUCTURE OF NEPHRON

20. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:01/12/2020
STRUCTURE OF NEPHRON

21. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:01/12/2020
STRUCTURE OF NEPHRON
GLOMERULUS
Bowman’s
capsule

22. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:01/12/2020
STRUCTURE OF NEPHRON
RENAL TUBULE
It is a double walled cup-like sac at the beginning of the
tubular component of a nephron in the mammalian kidney
that performs the first step in the filtration of blood to form
urine. A glomerulus is enclosed in the sac.

23. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:26/11/2020
STRUCTURE OF NEPHRON
RENAL TUBULE

24. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:26/11/2020
STRUCTURE OF NEPHRON
RENAL TUBULE

25. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:26/11/2020
STRUCTURE OF NEPHRON
RENAL TUBULE

26. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:01/12/2020
PLENARY:
1. What forms the Malpighian body?
2. What is the shape of renal pelvis and what are calyces?
3. Mention the parts of nephron.
4. Differentiate between renal artery and renal vein.

27. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
STARTER:
A
E
D
C
B
1. Identify the diagram and label the parts from A- E.
2. Differentiate between renal artery and afferent arteriole.
3. Name the two parts of nephron.
4. Mention the part of the nephron which enters into the
medullary region of the kidney.

28. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
STRUCTURE OF NEPHRON
RENAL TUBULE

29. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
STRUCTURE OF NEPHRON
TYPES OF NEPHRON

30. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
Cortical nephrons Juxtamedullary
They occur in all vertebrates. They occur only in birds and mammals
Located in the outer part of the renal cortex. Located close to the renal medulla.
Have a short loop of Henle, which penetrates
only the outer renal medulla.
Have a long loop of Henle extending
deep into the renal medulla.
The vasa recta is short or absent. The vasa recta is long.
Major part of the regulatory and excretory
functions of the human body is carried out by
the cortical nephrons.
These juxtamedullary nephrons
concentrate or dilute urine
Differences between the cortical and Juxtamedullary nephrons

31. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020

32. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020

33. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
URINE FORMATION

34. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
URINE FORMATION: 1.GLOMERULAR/ULTRA FILTRATION
Glomerular filtration is the first step in making urine. It is the process that the kidneys use to
filter excess fluid and waste products out of the blood into the urine collecting tubules of the
kidney, so they may be eliminated from your body.
Basement memb.
Endo. of Glo.
Malpighian corpuscle

35. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
Slit pores
URINE FORMATION: 1.GLOMERULAR FILTRATION
Basement memb.
Endo. of Glo.
Malpighian corpuscle

36. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
1. Bowman’s capsule: 3 layers
2. PCT: cuboidal epithelium, with a brush border (microvilli) with many mitochondria.
3. Henle’s loop: a) Descending: Squamous, thinner, permeable to H2O and Impermeable to NaCl.
b) Ascending: Cuboidal epi., thicker, permeable to NaCl and Impermeable to H2O
4. DCT: Cuboidal epi. a brush border (microvilli).
5. Collecting duct: Columnar epi.
URINE FORMATION:

37. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
URINE FORMATION

38. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
Due to the pressure, the liquid part of the blood which filters out
from the glomerulus passes into the Bowman's capsule. This
filtration under extraordinary force is called ultrafiltration.
URINE FORMATION: 1.GLOMERULAR FILTRATION
The GFR is influenced by hydrostatic pressure of the blood in
the afferent(Pb) and is resisted by osmotic pressure(Po) of the
protein of the blood of glomerulus and Hydrostatic pressure of
filtrate in the lumen(Pc) and Hydrostatic pressure of interstitial
fluid( Pi)
GFR= Pb-(Po+Pc+Pi)
Hydrostatic pressure of afferent arteriole
Osmotic pressure of protein in glomerulus
Hydrostatic pressure of filtrate in the lumen
Hydrostatic pressure of interstitial fluid.
Resistance
pressure
Counter
pressure

39. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
URINE FORMATION: 1.GLOMERULAR/ULTRA FILTRATION

40. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:03/12/2020
URINE FORMATION: 2. TUBULAR REABSORPTION

41. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:26/11/2020
URINE FORMATION: 2. TUBULAR REABSORPTION

42. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:26/11/2020
URINE FORMATION: 3. TUBULAR SECRETION

43. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:26/11/2020
URINE FORMATION AT A GLANCE

44. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:26/11/2020

45. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:26/11/2020
Urine is released

46. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:26/11/2020

47. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:26/11/2020

48. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
ROLE OF LUNGS , LIVER AND SKIN IN EXCRETION
1.LUNGS: CO2 and H2O.
2.LIVER: Secretes bile-containing substances like bilirubin, biliverdin, cholesterol,
degraded steroid hormones, vitamins and drugs. Most of these substances ultimately
pass out along with digestive wastes.
3.Sebaceous glands :eliminate certain substances like sterols, hydrocarbons and waxes
through sebum. This secretion provides a protective oily covering for the skin.
4. SALIVA: Small amounts of nitrogenous wastes could be eliminated.
5. Sweat produced by the sweat glands is a watery fluid containing NaCl, small amounts of urea,
lactic
acid, etc.

49. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020

50. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
DISORDERS OF EXCRETORY SYSTEM
2.RENAL CALCULI
1. UREMIA
3. GLOMERULONEPHRITIS
4. HAEMODIALYSIS

51. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
DISORDERS OF EXCRETORY SYSTEM
5. KIDNEY TRANSPLANTATION

52. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:02/12/2020
DISORDERS OF EXCRETORY SYSTEM

53. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:04/12/2020

54. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:04/12/2020
REGULATION OF KIDNEY FUNCTION: 1. ADH

55. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:04/12/2020
REGULATION OF KIDNEY FUNCTION: 2. JGA

56. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:04/12/2020
REGULATION OF KIDNEY FUNCTION: 3. ANF

57. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:04/12/2020
It takes place in higher vertebrates.

58. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:04/12/2020

59. School: NPS HSR
Grade: 11
Subject: Biology
Topic: Excretory products and their Elimination
Teacher: Tulasi Jaya Date:04/12/2020