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.
Describe the structure of the stomach. How is it modified to carry out its functions? How does It compare to that of the fetal pig?
The term physiology -physio meaning native and logos meaning discourse, is a Greek word, a synonym for natural philosophy. As the evolutionary processes progressed, the need
how effective is the LION KING movie in meeting the standards that relate to how energy flows through an ecosystem and how earth is inter connected?
Objectives After studying this unit you should be able to: 1. state the principal hazards of biology lab work, 2. describe the ways to minimize these dangers, 3. ex
FACTORS FOR BROAD AREA OF SCIENTIFVC ACTIVITY
what is the photosynthesis?
QUESTION (A) Define Psychology (B) Why is psychology considered a science? (C) (i) Clinical and Counselling psychology sound similar. How do they differ? (ii) Discuss a
three steps of age hardening
Explain Transport of Oxygen by Red Blood Cells Oxygen combines with haemoglobin, i.e., the red pigment in red blood cells. It combines with oxygen in the lungs, transports it a
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