A_&_P_II.txt

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Respiration involves both

the respiratory and the circulatory systems
What are the 4 processes that supply the body O₂ and dispose of CO₂
- Pulmonary ventilation
- External ventilation
- Transport of O₂ and CO₂ in the blood
- Internal respiration
Pulmonary ventilation is

breathing, movement of air in and out of the lungs.
External respiration is

O₂ and CO₂ exchange between the lungs and the blood
What is internal respiration?

O₂ and CO₂ exchange between systemic blood vessels and tissues.
What are the 9 major organs of the respiratory system?
- Nose, nasal cavity, and paranasal sinuses
- Pharynx
- Larynx
- Trachea
- Bronchi and their branches
- Lungs and alveoli
The site of gas exchange is called the

respiratory zone
The respiratory zone includes

Microscopic structures: respiratory bronchioles, alveolar ducts, and alveoli
What are the conduits to gas exchange sites called?

Conducting zone
What are the functions of the nose?
- Provides an airway for respiration
- Moistens and warms the entering air
- Filters and cleans inspired air
- Serves as a resonating chamber for speech
- Houses olfactory receptors
The nasal cavity superior to the nostrils is called_______________ it has _________________
- Vestibule
- Vibrissae (nose hairs) that filter coarse particles from inspired air.
What lines the superior nasal cavity and contains smell receptors?

Olfactory mucosa
Respiratory mucosa contain
- Mucous and serous secretions
- Cilia
Cilia in the nasal cavity move

contaminated mucus posteriorly to throat
Mucous and serous secretions contain

lysozyme and defensins

Author

Anonymous

48981

Card Set

A_&_P_II.txt

Description

Respiration

Updated

2010-11-11T22:06:42Z

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