MYTUTOR SUBJECT ANSWERS

464 views

Describe the process of breathing.

Breathing begins with inhalation. This starts with the contraction of the diaphragm, which flattens on contraction pulling the lungs down. The intercostal muscles contract to move the lungs up and out. The contraction of these muscles increases the volume of the lungs, this reduces the air pressure in the lung to below that of the external air. This pressure difference forces air to move in to the lungs where gas exchange occurs. The relaxation of the diaphragm and intercostals reduces the volume of the lungs which therefore increases the air pressure inside the lung to that above the external air. This forces air out of the lungs. The cycle is then repeated. 

Ava  D. IB Biology tutor, GCSE Biology tutor, A Level Biology tutor

1 year ago

Answered by Ava , a GCSE Biology tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

267 SUBJECT SPECIALISTS

£18 /hr

Gayathri S.

Degree: Medicine (Bachelors) - Birmingham University

Subjects offered:Biology, Maths+ 2 more

Biology
Maths
-Personal Statements-
-Medical School Preparation-

“I’m a medical student keen to pass on my passion for learning to others! I’m immediately available to tutor at flexible times. ”

£20 /hr

Jay G.

Degree: Biological Sciences (Biochemistry) (Bachelors) - Edinburgh University

Subjects offered:Biology, Maths+ 2 more

Biology
Maths
Mandarin
Chemistry

“I am here not only to help you get better at exams, but to help you enjoy your subject more ”

£18 /hr

Amy H.

Degree: Biological Sciences (Bachelors) - Durham University

Subjects offered:Biology, Chemistry

Biology
Chemistry

“Hello! I'm Amy, I am an undergraduate at Durham University studying Biological Sciences. I love science (and cats), and want to share my enthusiasm through tutoring.  Having taught myself A Level Chemistry, I have a good amount of ex...”

About the author

Ava D.

Currently unavailable: for regular students

Degree: Medicine (Other) - Bristol University

Subjects offered:Biology

Biology

“About MeI am currently a 2nd year medical student studying at the university of Bristol. I have therefore always had a great interest in Biology, attaining an A* at A-Level. At school I was always involved in the peer mentoring schem...”

MyTutor guarantee

You may also like...

Posts by Ava

Describe the process of breathing.

What are the main differences between Mitosis and Meiosis?

Other GCSE Biology questions

Give some of the ways body temperature is maintained?

How do I remember what adaptations plants and animals have in dry conditions? How would I answer this in a question?

What are the features of asexual reproduction?

What are the differences between the nervous and endocrine systems in maintaining homeostasis?

View GCSE Biology tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok