Question

In addition to being an airway, the ____ is the location of the human vocal cords

A. Pharynx
B. Larynx
C. Trachea
D. Bronchi
Cilia in cells along the trachea and nasal passages secrete ______ which traps dirt and particles from the air.

A. Mucus
B. Enzymes
C. Saliva
D. Bile
Air is only, approximately 21% oxygen. The majority of air is _______.

A. Carbon Dioxide
B. Nitrogen
C. Argon
D. Helium
The medulla oblongata controls the contraction and relaxation of the ________, causing the lungs to inflate and deflate during breathing.

A. Diaphragm
B. Intercostal Muscles
C. Bronchi
D. Alveoli
Explain the process of breathing. Begin with inhalation and describe the route that the air takes to the lungs, and what happens when the air reaches the lungs. Include in your description the terms: mouth, nose, pharynx, trachea, bronchi, lungs, alveoli, carbon dioxide, oxygen, and capillaries.

Answer 1

The human vocal cords are located in the larynx. Cells in the trachea and nasal passages secrete mucus to trap dirt and particles. Air is mostly made up of nitrogen. The medulla oblongata controls the diaphragm, causing the lungs to inflate and deflate during breathing. The process of breathing starts with inhalation through the nose or mouth, passing through the pharynx, trachea, bronchi, bronchioles, and into the alveoli where gas exchange occurs.

Step-by-step explanation:

The human vocal cords are located in the larynx, which is responsible for producing sound.

The cells along the trachea and nasal passages secrete mucus that traps dirt and particles from the air.

The majority of air is Nitrogen, making up approximately 78% of the air we breathe.

The medulla oblongata controls the contraction and relaxation of the diaphragm, causing the lungs to inflate and deflate during breathing.

The process of breathing starts with inhalation. Air enters through the nose or mouth and passes through the pharynx, then into the trachea. The trachea divides into the bronchi, which further divide into smaller passages called bronchioles. The bronchioles lead to tiny air sacs called alveoli. Oxygen enters the blood in the alveoli and carbon dioxide is expelled. The oxygenated blood is then transported to the body's cells by capillaries.