Question: For Inspiration Of Air Which Of The Following Happens First?

During inspiration, diaphragm descends, thoracic volume begins to increase, and rib cage rises first.

What happens first in inspiration of air?

The first phase is called inspiration, or inhaling. When the lungs inhale, the diaphragm contracts and pulls downward. At the same time, the muscles between the ribs contract and pull upward. This increases the size of the thoracic cavity and decreases the pressure inside.

What typically happens during inspiration?

Inspiration (inhalation) is the process of taking air into the lungs. It is the active phase of ventilation because it is the result of muscle contraction. During inspiration, the diaphragm contracts and the thoracic cavity increases in volume. This decreases the intraalveolar pressure so that air flows into the lungs.

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Which is the correct sequence of air movement during inspiration?

The respiratory route of air in the respiratory tract is: Nostrils → nasal cavity →Pharynx → Larynx →Trachea → Bronchi → Bronchioles → Alveoli or air sacs.

Which of the following is the correct order of air into the lungs?

Answer: atmosphere→ nasal cavity→ pharynx→ glottis→ larynx→ trachea → bronchus→ bronchi→ bronchioles → alveoli→ alveolar ducts.

Which of the following sequence is correct to initiate inspiration?

(i) The contraction of external intercostal muscles raises the ribs and sternum. (ii) Volume of thorax increases in the dorso-ventral axis. (iii) Intrapulmonary pressure decreases. (iv) Diaphragm contraction.

Which of the following happens to air during the process of breathing?

When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The air travels down your windpipe and into your lungs. After passing through your bronchial tubes, the air travels to the alveoli, or air sacs.

What is the order of airflow during inhalation?

When you inhale through your nose or mouth, air travels down the pharynx (back of the throat), passes through your larynx (voice box) and into your trachea (windpipe). Your trachea is divided into 2 air passages called bronchial tubes. One bronchial tube leads to the left lung, the other to the right lung.

Which gas is released during respiration?

Animals and plants need oxygen. When an animal breathes, it takes in oxygen gas and releases carbon dioxide gas into the atmosphere. This carbon dioxide is a waste product produced by the animal’s cells during cellular respiration.

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Where does the air go after the trachea?

Air enters your body through your nose or mouth. Air then travels down the throat through the larynx and trachea. Air goes into the lungs through tubes called main-stem bronchi.

Which is the correct sequence of air movement during inspiration quizlet?


Where does the air released by the lungs arrive first?

Breathing starts when you inhale air into your nose or mouth. It travels down the back of your throat and into your windpipe, which is divided into air passages called bronchial tubes. For your lungs to perform their best, these airways need to be open. They should be free from inflammation or swelling and extra mucus.

What is the correct order of air flow from the nose to the alveoli in the lungs?

Air enters through the nose (and sometimes the mouth), moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi and bronchioles till the alveoli.

What is the correct order in which air enters the body?

Air enters the body through the mouth or nose and quickly moves to the pharynx, or throat. From there, it passes through the larynx, or voice box, and enters the trachea. The trachea is a strong tube that contains rings of cartilage that prevent it from collapsing.

Which is the correct order of structures that air passes through?

Air passage way consists of nostrils, nasal cavities, pharynx, larynx, trachea, bronchi and bronchioles (present in lungs).

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Which of the following shows the correct order of structures in which air passes?

Assuming air comes in through the nose, the correct order is:

  • Nasal cavity.
  • Pharynx (throat).
  • Larynx (voice box).
  • Trachea (wind pipe).
  • Bronchi.
  • Alveolar ducts.
  • Alveoli.

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