ANAT 100 END TERM EXAM QUESTIONS
AND CORRECT ANSWERS!!
What are the functions of the respiratory system? (5)
Gas Exchange, Gas Conditioning, Sound Production, Olfaction, and Defense
breathing two processes
inspiration (inhalation) and expiration (exhalation)
Inspiration
breathing in, oxygen rich air into lungs
Expiration
breathing out, oxygen poor air out of lungs
Explain Gas exchange
movement of gases across membranes
1) gases diffuse into blood
2) Oxygen into blood
3) Carbon dioxide out of blood
external respiration: exchange of gases between air and blood
internal respiration: exchange of 02 and C02 between the blood and cells of the body
Explain Gas conditioning
when gases are conditioned, warmed and or cleansed
-> happens in the nasal cavities and paranasal sinuses
-> cleansed using mucosal lining of respiratory epithelium
Explain why gas needs to be conditioned warmed or cleansed
to prevent damage to lungs
, How does sound production work?
Through forceful expiration of air through vocal cords in larynx causing them to vibrate
What creates different sounds ?
different tensions of vocal cords
what other body parts play a large role in sound production?
Teeth lips and tongue
Explain olfaction
olfactory epithelium covers top of nasal cavity, receptors for sense of smell are located here
- signals from the receptors travel to the brain through the olfactory nerve CN I
Explain respiratory defense
protects against airborne diseases
helps to trap molecules and particles:
- hairs of the nostrils
- ciliated cells of epithelium
- mucus lining
What function humiditfies air
Conditioning
what function helps oxygen move across a membrane
Gas exhange
what function does mucus trap foreign debris
defense
what function has forceful expiration of air
sound production
AND CORRECT ANSWERS!!
What are the functions of the respiratory system? (5)
Gas Exchange, Gas Conditioning, Sound Production, Olfaction, and Defense
breathing two processes
inspiration (inhalation) and expiration (exhalation)
Inspiration
breathing in, oxygen rich air into lungs
Expiration
breathing out, oxygen poor air out of lungs
Explain Gas exchange
movement of gases across membranes
1) gases diffuse into blood
2) Oxygen into blood
3) Carbon dioxide out of blood
external respiration: exchange of gases between air and blood
internal respiration: exchange of 02 and C02 between the blood and cells of the body
Explain Gas conditioning
when gases are conditioned, warmed and or cleansed
-> happens in the nasal cavities and paranasal sinuses
-> cleansed using mucosal lining of respiratory epithelium
Explain why gas needs to be conditioned warmed or cleansed
to prevent damage to lungs
, How does sound production work?
Through forceful expiration of air through vocal cords in larynx causing them to vibrate
What creates different sounds ?
different tensions of vocal cords
what other body parts play a large role in sound production?
Teeth lips and tongue
Explain olfaction
olfactory epithelium covers top of nasal cavity, receptors for sense of smell are located here
- signals from the receptors travel to the brain through the olfactory nerve CN I
Explain respiratory defense
protects against airborne diseases
helps to trap molecules and particles:
- hairs of the nostrils
- ciliated cells of epithelium
- mucus lining
What function humiditfies air
Conditioning
what function helps oxygen move across a membrane
Gas exhange
what function does mucus trap foreign debris
defense
what function has forceful expiration of air
sound production
