Why lungs have more negative intrapleural pressure at the apex

  • #1
in some books it is written that it is because of gravity but i can't understand how gravity can cause such a effect
 

Answers and Replies

  • #2
berkeman
Mentor
59,300
9,449
in some books it is written that it is because of gravity but i can't understand how gravity can cause such a effect
Can you provide a link that discusses this?
 
  • #4
Fervent Freyja
Gold Member
653
695
Biology textbooks rarely use the term gravity to explain mechanisms and Professors don't always take kindly to students using vocabulary or concepts from other disciplines...

The external intercostal muscles are fixed on the superior end of the ribs, the ribcage is pulled upwards upon contraction, which increases negative pressure. Looking at a diagram may help you understand (or take A & P I). It is difficult to understand functions in the body without visual models to show relations, it certainly isn't something you can easily get by only reading text.
 

Related Threads on Why lungs have more negative intrapleural pressure at the apex

  • Last Post
Replies
0
Views
3K
Replies
8
Views
16K
Replies
8
Views
694
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
13
Views
8K
Replies
10
Views
33K
Replies
12
Views
2K
Replies
7
Views
7K
Top