Human respiratory system - larynx, Biology

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.
Posted Date: 10/1/2012 8:49:49 AM | Location : United States







Related Discussions:- Human respiratory system - larynx, Assignment Help, Ask Question on Human respiratory system - larynx, Get Answer, Expert's Help, Human respiratory system - larynx Discussions

Write discussion on Human respiratory system - larynx
Your posts are moderated
Related Questions
Q. What is an instance of a hypothesis which may explicate why there is not a big representation of the class Reptilia found in Polar Regions? Beings of the class Reptilia are

Q. What do you mean by Systematic Zoology ? It contains articles on animals systematic, and papers dealing with cytological attributes of species and higher taxa, distribution p

EA R It is phono receptor as respond to sound waves. It is teloreceptor as receive stimuli from far distance. It is stato-acousting organ as concerned with b

Under the limiting oxygen conditions experienced in by vigorous exercise, the configuration of NADH by glycolysis exceeds the ability of the respiratory chain to oxidize it back to

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

Drawbacks of Free Food Items for diabetics patients In this context, it is important to note that a patient can have unlimited servings of 'free foods'. These are foods which d


Phenology of Different Species The phenology of different species present in a community may differ from each other significantly. It is these phenological changes which give


simplest way to learn their classifiction