Human respiratory system - larynx, Biology

Assignment Help:

LARYNX -

  • Study of larynx is known as Laryngeology. In man it is more prominent than woman known as Adam's apple.
  • It is sound producing organ. At its base trachea present. It is modification of trachea.
  • It is situated at 4th, 5th, 6th position of cervical vertebrae. Glottis opens into it.
  • Glottis is covered by epiglottis, it allows only air, not food to enter into it.

1046_larynx.png

  • Wall of larynx is supported by four cartilages.
  • A broad C-shaped thyroid cartilage supports in the front and sides.
  • A pair of small triangular aretenoid strengthen its back wall.
  • Each aretenoid bears a node at its upper end i.e., cartilage of santorini.
  • A ring like cricoid cartilage present at base.
  • A thyroid membrane extends between the hyoid bone and the thyroid cartilage.
  • Inside the larynx are 2 pairs of vocal cord, made up of stratified squamous epithelium.
  • Upper pair is small and false. Lower pair is large and true.
  • In male 2-3 cms long, in female 1.7 cm long.
  • For the production of sound, the vocal cords are brought parallel and closer to each other by the action of laryngeal muscles.
  • Now a current of air is passed through them under pressure from the lungs.
  • This sets the vocal cords into vibration. Which results in the production of sound.
  • Buccal cavity, soft palate and tongue assist in speech.

Related Discussions:- Human respiratory system - larynx

Define about the spectroscopy- colorimetry, Define about the Spectroscopy- ...

Define about the Spectroscopy- colorimetry? Spectroscopy, therefore, is the study of the absorption and emission of radiation by matter. Absorption Spectroscopy is usually used

Digestion of proteins, Digestion  of proteins Digestion  of proteins  ...

Digestion  of proteins Digestion  of proteins  is  initiated  in  the  stomach by pepsin.  Pepsin  acts upon food proteins  and  converts them  to proteoses  and  peptones whic

Bi-parental reproduction, Normal 0 false false false EN...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Which cells is the nervous tissue constituted, Q. Of which cells is the ner...

Q. Of which cells is the nervous tissue constituted? How is the generic function of this tissue related to the characteristics of the main cell type that forms it? The nervous

Define blank titration for saponification number of fats, Define Blank Titr...

Define Blank Titration for Saponification Number of Fats? Pipette 5 ml of alcoholic KOH in a 250 ml conical flask. Titrate against standardized HCI using phenolphtalein as an i

What are the vitamins which make up the b complex, Q. What are the vitamins...

Q. What are the vitamins which make up the B complex? Which problems does the lack of these vitamins cause? Vitamins of the B complex are: vitamin B1 or thiamin, riboflavin, or

Logical order in which molecules-atoms are associated, Q What is the logica...

Q What is the logical order in which the concepts of molecules, atoms, cells... up to biosphere are associated? Atoms form molecules that form cells that form tissues that form

Cooking loss and quality of products, Coo k in g loss and quality Yi...

Coo k in g loss and quality Yields and cooking losses of products are important as these determine acceptability and economics of products. Higher cooking losses increase th

Define the importance of zinc in humans, Define the Importance of Zinc in H...

Define the Importance of Zinc in Humans? Zinc deficiency in humans was reported by A.S. Prasad among people consuming mostly breads and very little animal protein in Middle Eas

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