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
List three types of evidence used by systematic taxonomists to construct phylogenetic diagrams. Types of evidence contain the morphology of fossil and living species, patterns

Which one of the following is used as vector for cloning genes into higher organisms ? 1. Baculovirus 2. Salmonella typhimurium 3. Rhizopus nigricans 4. Retrovirus

Q. Describe the process of coronary atherosclerosis? Atherosclerosis is an intimal disease of arteries ranging in size from the aorta to the epicardial coronary artery i.e. cha

What was the Oral Status of the Patient It is imperative that the patient carry out a strict oral hygiene regimen as dental plaque is one of the main factors that leads to impl

Question 1 Explain pharmacokinetic parameters observed in plasma concentration time curve Question 2 What is Gas Chromatography? Mention the quantitative applications of gas

Calculate the Amount of Oxygen - Microbial Survival and Growth? The amount of oxygen in the environment influences the microbial growth. Depending on the oxygen requirement, yo

What is the difference between analogous and homologous organs? The Characteristics of different species are said to be analogous when having the same biological function, for

This is the amount of blood that is returned to the heart by the veins. This is influenced by various factors. Inspiration decreases the pressure in the  central veins and thus inc

MOSAI C THOERY - It was given by W. Roux. He studied the development of frog's egg. He destroyed one cells by a hot needle out of 2-cells formed as a result of first cleava

what is the work of cerebellum