Explain the diaphragm, Science

Assignment Help:

Explain the Diaphragm

The diaphragm is a muscular membranous partition separating the abdominal and thoracic cavities and functioning in respiration. It consists of a central tendon from which the muscle fibres radiate.

When the diaphragm contracts, its muscle fibres shorten and the central tendon is pulled downwards. Thus, the thoracic cavity is enlarged in length. The diaphragm is supplied by phrenic nerves. Phrenic nerves are a pair of nerves that arises from cervical spinal roots and passes down the thorax to innervate the diaphragm and control breathing.

The muscles of the diaphragm and the intercostal muscles contract simultaneously. Thus, the thoracic cavity is enlarged in all directions (antero-postenor and vertical). Next, let us study about the third set of muscles involved in respiration, i.e., abductor muscles.


Related Discussions:- Explain the diaphragm

Waves, Can I get some interesting facts about electromagnetic waves?

Can I get some interesting facts about electromagnetic waves?

Define age related changes in respiratory system, Define age related change...

Define age related changes in Respiratory system During ageing, alveoli (present in the lungs) become flatter and shallower, alveolar ducts enlarge, walls become thinner, conta

Soil science, what is biological sickness of soil and give mangement measur...

what is biological sickness of soil and give mangement measures?

To study the relation between volume and pressure of air, To study the rela...

To study the relation between volume and pressure of air Get  a rubber bung or 'door stop' which just fits in a narrow glass jar or measuring cylinder. Attach it  to  the  lowe

Determine the rainfall factor in soil formation, Determine the rainfall fac...

Determine the rainfall factor in soil formation The movement of water is determined by the nature and amount of rainfall. Where the rainfall is excessive or intense, the consti

Explain decarboxylation, Decarboxylation:   Amino  acids  undergo  decarbox...

Decarboxylation:   Amino  acids  undergo  decarboxylation reaction, enzymatically or by  treatment with  heat,  acid  or alkali (barium hydroxide)  to form the corresponding amines

Define the non-excretory functions of kidney, Define the Non-Excretory Func...

Define the Non-Excretory Functions of Kidney Though the major contribution of the kidneys, as you have learnt so far, is to form urine and to maintain the constancy of internal

Coastal seafood, Coastal Seafood Coastal Seafood is a family-owned busi...

Coastal Seafood Coastal Seafood is a family-owned business that operates on the East Coast. The company already uses both financial and point-of-sale software, but has been una

Explain cell - the basic unit of life, Explain Cell - The Basic Unit of Lif...

Explain Cell - The Basic Unit of Life You must be aware of the fact that the cell is the basic unit of life. What do you understand by the term 'cell'? What are the components

Prevention of disease, Prevention of disease: Now that we know that inf...

Prevention of disease: Now that we know that infectious diseases are caused by microbes,  it should be possible to prevent diseases by controlling their transmission and proper

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd