Tag: breathing and respiration

Questions Related to breathing and respiration

9 cartilages among them 3 are paired and 3 are unpaired occurs in

biology breathing and respiration regulation of breathing human respiratory system contro and disorders of respiration

  1. Pharynx

  2. Larynx

  3. Glottis

  4. Bronchial tube

Show answer
Correct Option: B
Explanation:
  • The larynx (voice box) is a cartilaginous box which helps in sound production.
  • It consists of 9 cartilages among them 3 are paired and 3 are unpaired.
  • Vocal cords are composed of twin infoldings of mucous membrane stretched horizontally across the larynx. They vibrate, modulating the flow of air being expelled from the lungs during phonation.
  • Hence vocal cords occur in Larynx.
  • So, the correct answer is 'Larynx'.

Match the columns.

Column I Column II
a Larynx p Lid of larynx
b Trachea q Air sacs
c Alveoli r Voice box
d Epiglottis s Wind pipe
t Common passage
biology breathing and respiration regulation of breathing human respiratory system contro and disorders of respiration

  1. a-r, b-s, c-q, d-p

  2. a-t, b-s, c-p, d-q

  3. a-r, b-s, c-q, d-t

  4. a-r, b-t, c-q, d-p

Show answer
Correct Option: A

Arytenoid cartilage occurs in

biology breathing and respiration regulation of breathing human respiratory system contro and disorders of respiration

  1. Larynx

  2. Nose

  3. Hyoid

  4. Sternum

Show answer
Correct Option: A
Explanation:

The arytenoid cartilages are a pair of small cartilages, shaped roughly like three-sided pyramids, which are located toward the rear of the larynx and play a vital role in positioning and adjusting the vocal folds during speech.

So, the correct option is is 'Larynx'.

Two fibro-elastic strands of larynx extend between.

biology breathing and respiration regulation of breathing human respiratory system contro and disorders of respiration

  1. Thyroid and cricoid

  2. Thyroid and arytenoid cartilages

  3. Cricoid and tracheal cartilaginous ring

  4. Santorini and thyroid cartilages

Show answer
Correct Option: B

In mammals, voice is produced by.

biology breathing and respiration regulation of breathing human respiratory system contro and disorders of respiration

  1. Bronchus

  2. Syrinx

  3. Larynx

  4. Inhalation and exhalation

Show answer
Correct Option: C

How many cartilages form larynx?

biology breathing and respiration regulation of breathing human respiratory system contro and disorders of respiration

  1. $6$

  2. $15$

  3. $9$

  4. $12$

Show answer
Correct Option: C

Match the columns and find the correct combination.

I II
(a) Larynx (p) Lid of larynx
(b) Trachea (q) Air sacs
(c) Alveoli (r) Voice box
(d) Epiglottis (s) Wind pipe
(t) Common passage
biology breathing and respiration regulation of breathing human respiratory system contro and disorders of respiration

  1. a-r, b-s, c-q, d-p

  2. a-r, b-t, c-q, d-p

  3. a-r, b-s, c-p, d-q

  4. a-r, b-s, c-q, d-t

Show answer
Correct Option: A

_____ projects obliquely upwards behind the tongue and the hyoid bone, pointing dorsally.

biology breathing and respiration regulation of breathing human respiratory system contro and disorders of respiration

  1. Epiglottis

  2. Glottis

  3. Larynx

  4. Pharynx

Show answer
Correct Option: A
Explanation:
    • The epiglottis is a large, leaf-shaped piece of cartilage lying on top of the larynx. It projects obliquely upwards behind the tongue and the hyoid bone, pointing dorsally.
    • During swallowing of food the larynx elevates, causing the epiglottis to fall on the glottis (opening into larynx) like a lid, closing it off, this prevents food from entering the windpipe (trachea). Hence The structure which prevents the entry of food particles into the respiratory passage is Epiglottis.
    • So, the correct answer is 'Epiglottis'.

    Choose the correct answer from the alternatives given.
    The structure which does not contribute to breathing movements in mammals is

    biology breathing and respiration regulation of breathing human respiratory system contro and disorders of respiration

    1. ribs

    2. diaphragm

    3. larynx

    4. abdominal muscles

    Show answer
    Correct Option: C
    Explanation:

    The process of breathing is divided into two phases: inspiration (inhalation) and expiration (exhalation). The diaphragm, ribs, external, the internal intercoastal muscles and the abdominal muscles that move the diaphragm are all involved in changing the size of the thoracic cavity either by contraction or relaxation thereby changing the air pressure and causing air to move in or out of the lungs. So, the correct option is 'larynx'.

    Which of the following options is incorrect about the larynx (sound box)?

    biology breathing and respiration regulation of breathing human respiratory system contro and disorders of respiration

    1. It is a bony box.

    2. Glottis is the opening into the larynx.

    3. During swallowing of food glottis is covered by epiglottis to prevent food entry into the larynx.

    4. All of these.

    Show answer
    Correct Option: A
    Explanation:
    • Larynx is a cartilaginous box containing nine pieces of cartilages.
    • Glottis is the opening from where esophagus and trachea gets seperated.
    • To prevent food from entering into the larynx while swallowing, the epiglottis covers the opening of the larynx.
    • So, the correct option is (A).