Question

Which of the following statements is true about Trachea in a respiratory system
A. it functions for sound production
B. It functions as passages of air to each alveolus
C. It Acts as passage of air to bronchi
D. It Lowers the surface tension
lies in front of esophagus.
A. Trachea
B. Glottis
C. Larynx
D. Epiglottis
ui. Cilia and mucous are found in
A. Trachea and nose
B. Glottis
C. Larynx
D. Epiglottis
iv. During expiration the diaphragm becomes
A Dome-shaped
B. Flattened
C. Normal
D. Oblique
v. Each of the alveolar sac is surrounded by
A. capillaries
B. veins
C. arteries
D. primarily lymphatic ducts​

Answer 1

Answer:

Organs and Structures of the Respiratory System

LEARNING OBJECTIVES

By the end of this section, you will be able to:

List the structures that make up the respiratory system

Describe how the respiratory system processes oxygen and CO2

Compare and contrast the functions of upper respiratory tract with the lower respiratory tract

The major organs of the respiratory system function primarily to provide oxygen to body tissues for cellular respiration, remove the waste product carbon dioxide, and help to maintain acid-base balance. Portions of the respiratory system are also used for non-vital functions, such as sensing odors, speech production, and for straining, such as during childbirth or coughing.

This figure shows the upper half of the human body. The major organs in the respiratory system are labeled.

Figure 1. The major respiratory structures span the nasal cavity to the diaphragm.

Functionally, the respiratory system can be divided into a conducting zone and a respiratory zone. The conducting zone of the respiratory system includes the organs and structures not directly involved in gas exchange. The gas exchange occurs in the respiratory zone.

Conducting Zone

The major functions of the conducting zone are to provide a route for incoming and outgoing air, remove debris and pathogens from the incoming air, and warm and humidify the incoming air. Several structures within the conducting zone perform other functions as well. The epithelium of the nasal passages, for example, is essential to sensing odors, and the bronchial epithelium that lines the lungs can metabolize some airborne carcinogens.

The Nose and its Adjacent Structures

The major entrance and exit for the respiratory system is through the nose. When discussing the nose, it is helpful to divide it into two major sections: the external nose, and the nasal cavity or internal nose.

The external nose consists of the surface and skeletal structures that result in the outward appearance of the nose and contribute to its numerous functions. The root is the region of the nose located between the eyebrows. The bridge is the part of the nose that connects the root to the rest of the nose. The dorsum nasi is the length of the nose. The apex is the tip of the nose. On either side of the apex, the nostrils are formed by the alae (singular = ala). An ala is a cartilaginous structure that forms the lateral side of each naris (plural = nares), or nostril opening. The philtrum is the concave surface that connects the apex of the nose to the upper lip.

This figure shows the human nose. The top left panel shows the front view, and the top right panel shows the side view. The bottom panel shows the cartilaginous components of the nose.

Figure 2. This illustration shows features of the external nose (top) and skeletal features of the nose (bottom).

Underneath the thin skin of the nose are its skeletal features. While the root and bridge of the nose consist of bone, the protruding portion of the nose is composed of cartilage. As a result, when looking at a skull, the nose is missing. The nasal bone is one of a pair of bones that lies under the root and bridge of the nose. The nasal bone articulates superiorly with the frontal bone and laterally with the maxillary bones. Septal cartilage is flexible hyaline cartilage connected to the nasal bone, forming the dorsum nasi. The alar cartilage consists of the apex of the nose; it surrounds the naris.

Answer 2

Answer:

1) It functions as passages of air to each alveolus

It Acts as passage of air to bronchi

2) Trachea

3) Trachea

4) Dome-shaped

5) Capillaries

Explanation:

1) Functions of Trachea:

• Into your trachea from your nose and mouth.
• The trachea empties into the left and right bronchi.
• Through your bronchi and into your lungs' bronchioles.
• Into alveoli, which are tiny sacs in your lungs where your body swaps oxygen for carbon dioxide (gas exchange).

2) Trachea - The muscular tube that connects the throat (pharynx) and stomach is called the oesophagus. The mucosa, a pink, wet tissue, lines the oesophagus, which is about 8 inches long.

3) Trachea - Cilia, which resemble hair-like projections, border the bronchi in the lungs and transport bacteria and detritus up and out of the airways.

4)Dome-shaped - The diaphragm glides downward during inspiration and upward during expiration when it relaxes and has a dome-shaped shape.

5) Capillaries - The walls of each alveolus are extremely thin and cup-shaped. Capillaries, a type of blood vessel with thin walls, form a network around it. The alveoli and capillaries in your body allow the oxygen you breathe in to diffuse into your blood.