YR2-CH5&6-LSN2

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 2

HAVE READY:

GOOGLE CLASSROOM

KERBOODLE PAGE 68

your homework FOR TODAY

TODAY:

- discuss difficult hw assignments

- discuss new theory

- work on in class assignments.

IN CLASS ASSIGNMENTS LSN 1:

- PAPERCLIP 1

- WORKSHEET RESPIRATION 1

- WORKSHEET RESPIRATION 2

ANSWER SHEET IS ON CLASSROOM, CHECK & DISCUSS THE ANSWERS

ANY QUESTIONS ABOUT THE HW ASSIGNMENTS:

LESSON 2: breathing

• I understand how and why we breathe.
• I understand how we do abdominal and thoracic breathing.
• I understand what red muscle tissue and white muscle tissue is.
• I know and understand the differences between warm blooded and cold blooded animals.

KEYWORDS:

• Intercostal muscles
• Diaphragm
• Pleural membrane
• Enotherm
• Exotherm
• Spirogram 

read Kerboodle pages 67-69

Respiratory system (organs):

Write down the name of the organs

1. nose
2. mouth
3. larynx
4. lung
5. bronchi
6. diaphragm
7. pharynx
8. trachea
9. bronchi
10. bronchiole
11. alveoli

Mechanics of BREATHING:

- Abdominal of diaphragmatic breathing

- Thoracic breathing

Thoracic inhalation:

air is sucked into the lungs

intercostal muscles contract

ribs pull the plearul membrane open

the plearul membrane pulls open the lungs

ribs move up

Thoracic exhalation:

air is pushed out of the lungs

intercostal muscles relax

ribs push the plearul membrane closed

the plearul membrane pushes the lungs closed

ribs move down

Abdominal inhalation:

air is sucked into the lungs

abdominal muscles contract

the diaphragm moves down

the plearul membrane pulls open the lungs

the diaphragm pulls the pleural membrane open

Abdominal exhalation:

air is pushed out of the lungs

abdominal muscles relax

the diaphragm  pushes the pleural membrane closed

the pleural membrane pushes the lungs closed

the diaphragm moves up

Lung volumes and spirograms

• When we breathe air moves into and out of our lungs.
• We can measure how much air moves at a time and put these measurements into a graph.
• These graphs are called Spirograms.
• Take a look at the next slide.

Important words:

You do not need to know all the words in the graph only the most important ones.

• Vital capacity
• Residual volume
• Total lung Capacity
• Tidal volume

Vital Capacity:

• The maximum amount of air you can move with one large inhalation  followed by a large exhalation.
  
• How much is this person's vital capacity?

Vital Capacity

Just under 4 liters.

Residual Volume:

• A small amount of air that always stays behind in the lungs, this is so they do not collapse.
  
• How much is this person's Residual Volume?

Residual Volume

Just over 2 liters.

Total Lung Capacity:

• The maximum amount of air a person's lungs can hold.
• How much is this person's Total Lung Capacity?

Total Lung Capacity

6 liters

Tidal Volume:

• The amount of air a person moves into and out of the lungs when relaxed.
• How much is this person's Tidal Volume?

Tidal Volume

about 0.8 liters

A

B

C

D

E

F

Red Muscle Tissue

White Muscle Tissue

WHAT TO DO NOW:

- WORK ON THE IN CLASS ASSIGNMENTS FOR LESSON 2

- COMPLETE THESE FIRST

- THEN DO THE NOTES FOR LESSON 3 WITH THE CORRECT LESSONUP (HW3)