MYTUTOR SUBJECT ANSWERS

1830 views

Describe and explain the mechanism that causes forced expiration. (4 marks)

Key mark points are highlighted using superscript.

Contraction of internal intercostal muscles1 and the relaxation of diaphragm and external intercostal muscles2  causes a decrease in volume3 of the thoracic cavity. Air is therfore pushed out, down pressure gradient.4

Oliver P. A Level Biology tutor, GCSE Biology tutor, A Level Maths tu...

9 months ago

Answered by Oliver, an A Level Biology tutor with MyTutor


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

210 SUBJECT SPECIALISTS

£24 /hr

Sanskrithi S.

Degree: Medicine (Other) - Oxford, University College University

Subjects offered:Biology, Maths+ 6 more

Biology
Maths
Chemistry
.UKCAT.
.BMAT (BioMedical Admissions)
-Personal Statements-
-Oxbridge Preparation-
-Medical School Preparation-

“I am a third year medical student at the University of Oxford whose aim is to support and guide students in their science studies.”

MyTutor guarantee

|  4 completed tutorials

£22 /hr

Gayathri S.

Degree: Medicine (Bachelors) - Birmingham University

Subjects offered:Biology, Maths+ 3 more

Biology
Maths
.UKCAT.
-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.”

£24 /hr

Nketia O.

Degree: Pharmacy (Masters) - Durham University

Subjects offered:Biology, Physics+ 1 more

Biology
Physics
Chemistry

“Hello! My name’s Nketia. I got an A* in A-Level Biology and an A in A-Level Chemistry. I’m a second-year Pharmacy student who is ready to teach others.”

About the author

Oliver P.

Currently unavailable: for new students

Degree: Biology (Masters) - Bristol University

Subjects offered:Biology, Science+ 5 more

Biology
Science
Maths
Human Biology
Further Mathematics
Extended Project Qualification
Chemistry

“What a great find! He has a great teaching style, is flexible and well prepared for the sessions. Would highly recommend. ”

You may also like...

Posts by Oliver

Describe and explain the mechanism that causes forced expiration. (4 marks)

Describe the process of allopatric speciation.

Other A Level Biology questions

What is semi-conservative replication?

What's the difference between mitosis and meiosis?

What are the differences between exons and introns found in DNA.

Describe the process of transcription

View A Level 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