Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain the Intercostal Muscles
Look at Figure Can you spot the intercostal muscles?
Yes, there are 11 pairs of intercostal muscles. The intercoastal muscles are the muscles between the ribs which contract during inspiration to increase the volume of the chest cavity. They are located in the spaces between the ribs. They are arranged in two layers called the external intercostal muscles and the internal intercostal muscles.
1. The external intercostal muscle fibres extend in a downward and forward direction from the lower border of the rib above to the upper border of the rib below.
2. The internal intercostal muscle fibres extend in a downward and backward direction from the lower border of the rib above to the upper border of the rib below. They cross the external intercostal muscle fibres at right angles. The intercostal muscles are stimulated to contract by intercostal nerves.
During inspiration, the intercostal muscles contract. They move upwards and outwards causing enlargement of the thoracic cavity as shown in the Figure.
During expiration, the volume of thoracic cavity is decreased by relaxation of diaphragm and intercostal muscles which results m increase in thoracic pressure and pressure of lungs. As a result, air is expired from lungs to the atmosphere.
Interpersonal Relations Mr. X relates easily to others and describes himself in positive terms (Ho=38). He believes that others can be trusted and that they have his best int
Aldose-ketose isomerism We have already seen that in a monosaccharide either an aldehyde (-€HO) or a ketone (>C=O) group is present. The former is called as aldos
Define Creatinine in Urine Creatinine: It is an end-product of protein metabolism, an anhydride of creatine, found in the blood and urine that can be used to help assess if the
three steps of age hardening
REGULATIONS CONCERNING SAFETY AND HEALTH OF WORKERS IN INDUSTRIAL LABORATORIES The workers in industry engaged in using or producing chemicals, coal, high temperature, intense
The Early History of the Earth The Earth has been evolving and changing ever since its origin, about 4.5 billion years ago. In the first tens of millions of years of the Ea
Why does marble rarely contain fossils? This is due to of the way that it is formed. When you have a rock that is formed bymetamorphosis then it has been created by heat and pres
The buoyancy of water Find a metal can like a coffee can or a cigarette tin which has a tightly fitting cover. With the cover on, push the can into a pail of water, cover end d
1. Explain the difference between society and culture. 2. What is the difference between Structural Functionalist Theory and Symbolic Interaction Theory? 3.Explain the differ
what is tratosphere
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd