Chapter 17

Question Answer
Oxygen and carbon dioxide are transported between the cells of the body and the respiratory system by the
The smallest branches of a respiratory system tubes terminate in clusters of microscopic air sacs called Alveoli
Blood enters the lungs from the heart through major artery known as the Pulmonary artery
The mouth and nasal cavities meet in a region called the Pharynx
The nasal cavities open to the external environment at the nostrils also called the External nares
Many bones of the skull contain openings from the nasal cavity is referred to as Sinuses
At the roof of the nasal cavities the sense of smell is associated with an area called the olfactory region
Three functions of the nose include moisturizing the air filtering the air and Warming the air
Another name for the pharynx is the Throat
The lateral walls of the nasopharynx contain openings of tubes from the middle ear known as auditory tubes
The largest cartilage of the larynx also known as the Adam's apple is that Thyroid cartilage
The cartilage of the larynx that resembles a Signet ring and connects the trachea and larynx is the Cricoid cartilage
The opening to the larynx is referred to as the Glottis
Vibrations of the vocal cords are due to air exhaled from the Lungs
Because men have longer vocal cords their voices have lower pitch
The trachea is supported by a series of C shaped rings of Cartilage
The two primary tubes that Branch from the trachea are the Bronchi
There is no cartilage in the tubes when the bronchi become
The smallest branch of a respiratory system tubes terminate in clusters of microscopic air sacs called
Bronchioles
The bronchiole walls are composed mostly of muscle referred to as Smooth muscle
The common name for inflammation of the bronchial tree is Bronchitis
The lungs occupy most of the space of the Thoracic cavity
The left lung is subdivided into two lobes while the right lung is subdivided into Three lobes
The two layer membrane surrounding each lung is the Pleura
What underlying principle of breathing is that air flows from a region of high pressure to a region of Low pressure
Pressure changes occurring in the lungs can be traced to the activity of skeletal muscles known as Respiratory muscle
During inspiration contractions cause the downward movement of a dome-shaped muscle known as the Diaphragm
The relaxation of respiratory muscles compresses the thorax and increase the air pressure in the Lungs
While inspiration is an active process the process of expiration is Passive process
The volume of air that can be forced out of the lungs breathing is controlled by an area of the brain called the respiratory control center which includes part of the medulla oblongata and Pons
the volume of air that can be forced out of the lungs after a forced inspiration is the Vital capacity
Circulatory system

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