thoracic wall Flashcards
1
Q
describe the pumping mechanism involved in respiration
A
- air is drawn into lungs during respiration by expansion of lungs & spelled during expiration by contraction of lungs
- inspiration occurs by movement of thoracic wall & diaphragm expanding the thoracic cavity
- expiration is mostly passive
2
Q
what is the thoracic cavity?
A
- thoracic cavity is a sealed cavity lined by costal & diaphragmatic pleura
- thoracic cavity contains lungs, mediastinum, heart & thoracic trachea
3
Q
what bones does the thoracic cage consist of?
A
- ribs
- vertebrae
- sternum
4
Q
are abdominal organs contained in the thoracic cavity or just the thoracic cage?
A
- diaphragm domes cranially meaning some
4
Q
are abdominal organs contained in the thoracic cavity or just the thoracic cage?
A
- diaphragm domes cranially meaning some abdominal organs sit within the thoracic cage but NOT within thoracic cavity
5
Q
what is the thoracic inlet & what is it bounded by?
A
- thoracic inlet is the cranial end of the thoracic cage & is bounded by
- 1st thoracic vertebrae dorsally
- 1st pair of ribs laterally
- manubrium sterni ventrally (cranial part of sternum)
6
Q
what is the thoracic outlet & what is it bounded by?
A
- thoracic outlet is the caudal extremity of the thoracic cage & is bounded by:
- last thoracic vertebrae dorsally
- last pair of ribs & costal arch laterally
- diploid cartilage ventrally
7
Q
how does pleural fluid aid movement of thorax in respiration?
A
b
