Tag: gas exchange in humans

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Questions Related to gas exchange in humans

Multiple choice zoology gas exchange in humans human respiration the mechanism of breathing breathing and its movements

Which of the following statement is incorrect about nasopharynx?

  1. Internal nostrils opens into nasopharynx

  2. It is the passage for air only

  3. It is a portion of pharynx

  4. Nasopharynx opens through the glottis of the larynx region into the trachea
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The nasopharynx is the upper part of the pharynx, located behind the nasal cavity. It serves as a passage for air only, not food. The statement that internal nostrils open into it is correct, but the claim that it opens through the glottis into the trachea is incorrect; the glottis is the opening to the larynx, which is located below the oropharynx.

Multiple choice zoology gas exchange in humans human respiration the mechanism of breathing breathing and its movements

Epiglottis is meant for protecting

  1. Oesophagus from entry of air

  2. Nasal chambers from entry of food

  3. Larynx from entry of food

  4. Teeth from caries
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The epiglottis is a flap of cartilage that covers the opening of the larynx during swallowing. This prevents food and liquids from entering the respiratory tract.

Multiple choice zoology gas exchange in humans human respiration the mechanism of breathing breathing and its movements

A person starts coughing suddenly while swallowing some food. It could be due to improper movement of.

  1. Neck

  2. Diaphragm

  3. Tongue

  4. Epiglottis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Coughing while swallowing occurs when food particles accidentally enter the larynx. This happens if the epiglottis fails to close the glottis properly during the swallowing reflex.

Multiple choice zoology gas exchange in humans human respiration the mechanism of breathing breathing and its movements

What are correct about control of Broca area ?
1.Breathing 
2.Movement of vocal cords
3.Movement of teeth
4.Movement of tongue

  1. 1, 2, 3 correct

  2. 1, 2 correct

  3. 2, 4 correct

  4. 1, 3 correct
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Broca's area is primarily associated with speech production. It controls the motor movements of the tongue and vocal cords necessary for articulation.

Multiple choice zoology gas exchange in humans human respiration the mechanism of breathing breathing and its movements

Choose the correct answer from the alternatives given.
Which of the following is the cartilaginous structure that folds down to meet the uprising larynx to close off the airway during swallowing?

  1. Trachea

  2. Epiglottis

  3. Cricoid cartilage

  4. Thyroid cartilage
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A flap-like epiglottis closes the opening to the larynx during swallowing to prevent swallowed matter from entering the trachea (airway). So, the correct option is 'Epiglottis'.

Multiple choice zoology gas exchange in humans human respiration the mechanism of breathing breathing and its movements

Choose the correct answer from the alternatives given.
In which of the following structures vocal cords are located?

  1. Oesophagus

  2. Larynx

  3. Pharynx

  4. Bronchi
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The vocal cords are folds of membranous tissue that are located within the larynx at the top of the trachea. Their edges vibrate in an airstream to produce voice. So, the correct option is 'Larynx'.