1. You need:
Clean paper / Pencil
Paper guts (digestive model)
Excretory notes WS
Warm up from last week to turn in
Warm Up:
What are the functions of the digestive and excretory systems?
I CAN: identify the parts and function of the digestive, excretory, and circulatory systems.
Feb. 4, 2019

2. Review Audrey.Garris@dpsnc.net Contact Ms.Garris
Phone = (919) ext
Written note…but bring it to me before/after class!! =

3. Review
Be the positive. It takes many “put-ups” to cancel a “put-down.”

4. Review Check your desk. Please be INTENTIONAL!
Place, don’t toss/throw.
Think about noise.

5. MRS NERG-C Review M - Movement R – Respirations
S – Sensitivity (responds to stimulus)
N – Nutrition / nutrients
E - Excretion
R – Reproduces
G - Growth
C - Cells

6. Review
Body Organization
Organism
Organ System
Organ
Tissue
Cell

7. What are all living things made of?
Review
What are all living things made of?
All living things are made of CELLS! (You have billions of cells inside you.)
Cells have specialized jobs, and are organized in your body.
For example, these red blood cells carry oxygen around your body in your blood.

8. Organs are organized into ORGAN SYSTEMS!
Review
Organs are organized into ORGAN SYSTEMS!
An ORGAN SYSTEM is a group of organs that work together to perform a major job.
Examples:
Circulatory System
Digestive System
Skeletal System
ORGAN SYSTEM
ORGANS
TISSUES
CELLS

9. Organ Systems are organized into ORGANISMS!
Review
Organ Systems are organized into ORGANISMS!
ORGANISM (BODY)
An ORGANISM is a living thing, with organ systems that work together to keep a body alive.
Examples: Human Beings
ORGAN SYSTEM
ORGANS
TISSUES
CELLS

10. Review What is HOMEOSTASIS?
HOMEOSTASIS is how your body maintains an INTERNAL BALANCE.
It keeps your body STABLE in spite of changes OUTSIDE YOUR BODY.
Example: Your body keeps CONSTANT TEMPERATURE no matter what the outside temperature.

11. Review
The Digestive System

12. The Digestive System (Flip to the back of your notes)
Review
The Digestive System (Flip to the back of your notes)
The digestive system has 3 main functions:
It breaks down food into particles that the body can use.
It absorbs nutrients into the blood.
It eliminates waste from the body.
Mouth
Esophagus

13. Categories of NUTRIENTS
Review
Categories of NUTRIENTS
Water - most important because other stuff can dissolve into it. “Water soluble”
Minerals
Vitamins
Fat
Carbohydrates
Proteins
** You may need to write the list on your notes.**

14. Mouth Esophagus Stomach Liver Rectum Pancreas Small intestine
Gallbladder
Pancreas
Small intestine
Large intestine
Rectum

15. The Digestive System
Liver, gallbladder and pancreas: produces & stores chemicals (enzymes) that help digest food in the small intestine.
Mouth
Esophagus
Stomach
Liver
Pancreas
Gallbladder

16. Mouth
Salivary glands
Esophagus
Liver (and the gall bladder is green!!!
Stomach
Small Intestine
Large intestine
Appendix
Rectum
Anus

19. Schoolhouse Rock
Body machine!
Excretory song 1
Excretory song 2

20. Excretory System
Fluid’s

21. Main Function:
The system of the body that collects waste produced by cells and removes the wastes from the body. (also known as: excretion)

22. Wastes Eliminated:
It specifically removes Urea – chemicals that come from the break down of proteins
Excess water
Other wastes

23. Structures of the excretory system
Kidneys – (2) filter blood
Ureters – 2 narrow tubes that leading from the kidneys to the bladder
Urinary Bladder-fist sized pouch (muscular sac) that holds about 2 cups of urine
Urethra – exit tube

24. The Kidneys and their Nephrons
The kidneys are made of millions of nephrons, tiny filter factories.
First, the wastes and the needed materials, like glucose and water, are filtered out of blood
Second, the needed materials are returned to the blood and wastes are eliminated.

25. Not on Notes – but you can read and discuss
What happens in a nephron?
Not on Notes – but you can read and discuss
1. Blood flows from an artery into a nephron in the kidney.
2. Blood reaches a cluster of capillaries. There – urea, water, glucose, and other materials are filtered out of the blood. These materials pass into a capsule that surrounds the capillaries.
3. The materials that were removed pass into a long, twisting tube that is surrounded by capillaries.
4. As the filtered material flows through the tube, most of the water and glucose are re-absorbed into the blood. Most of the urea stays in the tube.
5. After the reabsorbing process is complete, the liquid that remains in the tube is called urine.

26. What happens in a nephron?
Not on Notes – but read and discuss
Blood flows from an ___________ into a nephron in the _______________.
Blood reaches a cluster of ____________ where ____________, ___________, __________, and _____________ are filtered out of the blood.
The materials that were removed pass into a long, twisting tube that is surrounded by ____________________.
artery
kidney
capillaries
urea
water
glucose
other materials
capillaries

27. What happens in a nephron?
Not on Notes – but read and discuss
4. As the filtered material flows through the tube, most of the ________________ and the ______________ are re-absorbed into the blood. Most of the _______________ stays in the tube. 5. After the _________________________ process is complete, the liquid that remains in the tube is called __________________.
water
glucose
urea
re-absorbing
urine

28. Not on Notes – but read and discuss
Nephrons
Not on Notes – but read and discuss
Capillaries
Capillaries
Urea
Urea, water, glucose, and other materials…
water, glucose
Kidney

29. After the reabsorbing process is complete, the liquid that remains in the tube is called… URINE.

30. What happens in the Nephrons?
Just to review…
Materials and wastes go through the tubes
Protein, glucose, most water, and some other materials return to the blood
Wastes and small amounts of water stay and are excreted

31. Analyzing signs of disease…
Doctors will dip a strip of paper into urine to test for the presence of glucose and protein.
The presence of Glucose = diabetes
The presence of Protein = kidneys not functioning correctly

32. Homeostasis with Excretion
Excretion maintains homeostasis by keeping the body’s internal environment stable and free of harmful levels of chemicals.
Kidneys
Lungs and Skin
Liver

33. Homeostasis Kidneys Regulate amount of water in your body
Hot day – you will sweat a lot, but you don’t drink a lot so you excrete small amounts of urine

34. Homeostasis Lungs and Skin Exhale carbon dioxide and water vapor
Sweat water and urea
Liver
Breaks down wastes before excreting them

35. BrainPop Click here.
They have a video about the Urinary System (which is the same as the Excretory – although Excretory is likely the better name!).
Watch the video (maybe twice).
Answer the quiz questions…as a class or as an individual (or on paper) – it’s up to the teacher.

36. Check the time. If you have more time, you can give the students their Body Systems chart and have them work on Digestive and Excretory. They can use the textbook, but its really just about filling in using context clues.
After the Body Systems chart, you can let them identify the sequence of events in the excretory system (urinary system). The last hand-out has a picture of the urinary system and students would need to cut out the boxes showing each step. You may need to “unhide” the next slides. Please be sure you truly need it before passing it out. I can use it Monday.

37. 4th period only
4th needs to hear/see the afternoon announcements. I’ve asked Destiny B and Muntasir to help with the computer as needed.
Link to the announcements here – or use a google window to open.

38. Word Bank
Kidney
Bladder
Nephron
Blood vessel/blood
Ureters
Urethra

39. Are there any questions?

40. MRS NERG-C M - Movement R – Respirations
S – Sensitivity (responds to stimulus)
N – Nutrition / nutrients
E - Excretion
R – Reproduces
G - Growth
C - Cells

41. Body Organization
Organism
Organ System
Organ
Tissue
Cell

42. The Digestive System The digestive system has 3 main functions:
It breaks down food into particles that the body can use.
It absorbs nutrients into the blood.
It eliminates waste from the body.
Mouth
Esophagus

43. The Excretory system
Eliminates waste from the body.

44. What does it do for us? Our circulatory system…
Delivers necessary materials (like oxygen and sugar) to the entire body in the blood,
Removes waste products from cells, and
Helps fight disease by transporting immune cells in the blood.

45. So, the detailed path of blood in your body would look like this:
From Body
Right Atrium
Right Ventricle
To Lungs
From Lung
Left Atrium
Left Ventricle
To Body
Lung
Body

46. Heart labels Sup. Vena Cava AORTA To LUNGS To LUNGS Left Right atrium
From LUNGS
From LUNGS
Right
Ventricle
Left
Ventricle
Inf. Vena Cava

47. What carries the blood?
BLOOD VESSELS are the hollow tubes that carry your blood around your body.
There are 3 TYPES:
ARTERIES
CAPILLARIES
VEINS

48. What is your blood? Red Blood Cells carry oxygen.
White blood cells fight disease.
Platelets form blood clots to stop you from bleeding too much.

49. So what happens if you don’t take care of your circulatory system?
Not enough good stuff to your body
Build up of bad stuff in your body
Heart Attack!

50. What is the RESPIRATORY SYSTEM?
- Breathe in and out…
What is the RESPIRATORY SYSTEM?
The system of the body that deals with BREATHING.
It consists of the NOSE, PHARYNX, TRACHEA, BRONCHIAL TUBES, and LUNGS.

51. What is the FUNCTION of the Respiratory System?
- Breathe in and out…
What is the FUNCTION of the Respiratory System?
To DELIVER OXYGEN to the body.
To REMOVE CARBON DIOXIDE from the body.

52. Why does the body need oxygen?
- Breathe in and out…
Why does the body need oxygen?
The body’s CELLS use OXYGEN to release ENERGY to the body.
CELLULAR RESPIRATION is the CHEMICAL REACTION that uses GLUCOSE & OXYGEN to release ENERGY.
CARBON DIOXIDE is a WASTE PRODUCT of this chemical reaction.

53. Which systems work together?
- Breathe in and out…
Which systems work together?
RESPIRATORY SYSTEM gets OXYGEN from the air.
DIGESTIVE SYSTEM gets GLUCOSE from food.
CIRCULATORY SYSTEM DELIVERS oxygen and glucose to cells.
In the cells, respiration uses glucose and oxygen to release ENERGY.

54. What path does AIR flow? Try it
Use the words on your table and work with your elbow partner to put them in order.
Raise your hand when you are done.

55. What path does AIR follow?
- Breathe in and out…
What path does AIR follow?
NOSE
PHARYNX
TRACHEA
BRONCHIAL TUBES
LUNGS (alveoli)

56. What happens in each part?
- Breathe in and out…
What happens in each part?
NOSE – in the nasal cavity,
the air is:
Warmed,
FILTERED, and
moistened.
(Mucus and nasal hairs keep out
dust, pollen and other particles).
PHARYNX – air passes through the THROAT when breathing. The EPIGLOTTIS covers the trachea when you SWALLOW to prevent FOOD from entering the trachea when you eat/drink.

57. What happens in each part?
- Breathe in and out…
What happens in each part?
TRACHEA – is the WINDPIPE that leads to the lungs. It is a TUBE with RINGS OF CARTILAGE.
BRONCHIAL TUBES – are the
the short tubes that branch off the
trachea TO CARRY AIR TO
the LUNGS.

58. What happens in each part?
- Breathe in and out…
What happens in each part?
LUNGS – inside the lungs, the bronchi branch into SMALLER TUBES. At the end of the smallest tubes, are structures called ALVEOLI.
ALVEOLI – are AIR SACS, surrounded by CAPILLARIES.
This where BLOOD picks up
OXYGEN and gets rid of CARBON
DIOXIDE.

59. What happens in the ALVEOLI?
- Breathe in and out…
What happens in the ALVEOLI?
GAS EXCHANGE - Blood from the body enters the lungs. In the alveoli, the blood GETS RID OF CARBON DIOXIDE and PICKS UP OXYGEN before returning to the heart to take oxygen to rest of the body.

60. How do we BREATHE?

61. How are BREATHING & SPEAKING related?
Air that you BREATHE OUT when you exhale also helps you SPEAK.
Your LARYNX is your VOICE BOX which has 2
VOCAL CHORDS that move and
produce sound when air passes
through the opening between
them.
Larynx

62. Mythbusters
Helium to speak

63. Let’s make a demo!
At your table, you have a bottle, balloons, rubber bands, and straw “thing”
Stretch the balloon over the bottom of the bottle…the open area. Secure the balloon with a rubber band.
Place the straw “thing” into the bottle and screw the top on.
Pinching the balloon that you stretched on the bottle, pull down. What happens to the balloon on the straw “thing”? Why?
Note: straw “thing” is really just a straw with a balloon secured to one end of it and the straw then secured through a hole in the bottle top. This would represent the lungs – a tube inward to an inflatable pouch. I tried to make about 8 of these in advance – so students just had to assemble a little.

64. Are there any questions?