Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
What two types of organisms have every cell in contact with the external environment and respitory gases can be exchanged between the cell and the environment by simple diffusion through the cell membrane? (2)
|
Protozoa & Hydra
|
|
|
Do arthropods require a carrier for oxygen?
|
No
|
|
|
Gas exchange between the lungs and the circulatory system occurs accross the very thin walls of the XXXXXXXXX, which are air-filled sacs at the terminals of the airway branches.
|
Alveoli
|
|
|
What is ventilation regulated by?
|
Phrenic nerve carries signals to diaphragm
|
|
|
Where are the neurons that regulate ventilation located?
|
Medulla Oblongata--respiratory center
|
|
|
A dense network of minute blood vessels called the XXXXXXX XXXXXXXXX surround the alveoli, gas exchange occurs by diffusion.
|
Pulmonary Capillaries
|
|
|
Respiration is always under involuntary control by the medulla oblongata. (T/F)
|
False. Respiration is under some voluntary control.
|
|
|
What is negative pressure created by?
|
Empty space between thoracic cavity and diaphragm, when contracted, causing lungs to expand during inspiration
|
|
|
Intercostal muscles
|
accessory muscles in respiration; chest expansion
|
|
|
What keep the trachea and bronchus open?
|
'C-shaped' cartilaginous rings
|
|
|
How are particles kept out of the respiratory tract?
|
-Cilia lined through the entire tract
-Macrophages in the alveoli |
