Carbon Dioxide and Oxford University Press
Blog resource: http://tinyurl.com/2924a5l Click4Biology: http://tinyurl.com/2g2cn8e
Cite all sources using the CSE method (or ISO 690 Numerical in Word). The first example has been done for you. Highlight all objective 1 command terms in yellow and complete these before class. Highlight all objective 2 and 3 command terms in green – these will be part of the discussions in class. After class, go back and review them.
Complete the self-assessment rubric before submitting to Moodle. Avoid printing this if possible.
1. Define the following:
Ventilation
Movement of air into and out of the lungs. (1)
Gas exchange
Cell respiration
Deoxygenated
Oxygenated
2. Explain the need for ventilation in humans.
Size
Humans are large, land-based organisms that cannot exchange gas sufficiently with the air through diffusion alone. A central ventilation system allows gases to be exchanged with the blood and carried around the body to the cells that require it.
Oxygen
Carbon dioxide
Concentration gradient
3. Deduce the number of membranes an oxygen molecule must pass through in order to enter an erythrocyte.
4. Label the features of the alveoli and describe how they are adapted for their function.
a.
b.
Many invaginations and millions of alveoli – large surface area
c.
Moist membranes.
d.
Membranes only one cell thick.
5. Label this diagram of the human ventilation system.
a. Trachea
b.
c.
d.
e.
Also don’t forget to be able to draw and label a magnified alveolus.
Practice these drawings on paper – you might need them in the exam!
6. Explain the method of ventilation of the lungs.
Feature
Inhalation
Exhalation
External intercostal muscles
Contract, pulling ribcage up and out.
Internal intercostal muscles
Diaphragm
Abdominal muscles
Lung volume
Pressure in lungs
Decreases, sucking air into the
Cite all sources using the CSE method (or ISO 690 Numerical in Word). The first example has been done for you. Highlight all objective 1 command terms in yellow and complete these before class. Highlight all objective 2 and 3 command terms in green – these will be part of the discussions in class. After class, go back and review them.
Complete the self-assessment rubric before submitting to Moodle. Avoid printing this if possible.
1. Define the following:
Ventilation
Movement of air into and out of the lungs. (1)
Gas exchange
Cell respiration
Deoxygenated
Oxygenated
2. Explain the need for ventilation in humans.
Size
Humans are large, land-based organisms that cannot exchange gas sufficiently with the air through diffusion alone. A central ventilation system allows gases to be exchanged with the blood and carried around the body to the cells that require it.
Oxygen
Carbon dioxide
Concentration gradient
3. Deduce the number of membranes an oxygen molecule must pass through in order to enter an erythrocyte.
4. Label the features of the alveoli and describe how they are adapted for their function.
a.
b.
Many invaginations and millions of alveoli – large surface area
c.
Moist membranes.
d.
Membranes only one cell thick.
5. Label this diagram of the human ventilation system.
a. Trachea
b.
c.
d.
e.
Also don’t forget to be able to draw and label a magnified alveolus.
Practice these drawings on paper – you might need them in the exam!
6. Explain the method of ventilation of the lungs.
Feature
Inhalation
Exhalation
External intercostal muscles
Contract, pulling ribcage up and out.
Internal intercostal muscles
Diaphragm
Abdominal muscles
Lung volume
Pressure in lungs
Decreases, sucking air into the