Explanations 
Textbooks 
Flashcards 
91影视 AI 
Notes 
Study Plans 
Study Sets 
Find a degree 
Magazine Chapter 19: Problem 9
Match the following structures with their descriptions: (pp. 735-741) (1) true vocal cords A. serous membrane on lungs (2) false vocal cords B. contains the vocal cords (3) larynx C. vibrate to make sound (4) visceral pleura D. air sacs (5) alveoli E. muscular folds that close the glottis
Short Answer
Expert verified
1-C, 2-E, 3-B, 4-A, 5-D
Step by step solution
01
Understanding True Vocal Cords
The true vocal cords are structures that vibrate to produce sound. Therefore, they match with description C: 'vibrate to make sound'.
02
Understanding False Vocal Cords
False vocal cords are muscular folds that play a role in closing the glottis, although they do not directly produce sound. Therefore, they correspond to description E: 'muscular folds that close the glottis'.
03
Identifying the Larynx
The larynx is the part of the respiratory system that houses the vocal cords. Therefore, it matches with description B: 'contains the vocal cords'.
04
Describing Visceral Pleura
The visceral pleura is the serous membrane that covers the lungs. Thus, it aligns with description A: 'serous membrane on lungs'.
05
Defining Alveoli
Alveoli are the tiny air sacs within the lungs where gas exchange occurs. Therefore, they fit with description D: 'air sacs'.
Unlock Step-by-Step Solutions & Ace Your Exams!
-
Full Textbook Solutions
Get detailed explanations and key concepts
-
Unlimited Al creation
Al flashcards, explanations, exams and more...
-
Ads-free access
To over 500 millions flashcards
-
Money-back guarantee
We refund you if you fail your exam.
Over 30 million students worldwide already upgrade their learning with 91影视!
Key Concepts
These are the key concepts you need to understand to accurately answer the question.
True Vocal Cords
True vocal cords are essential components of the human vocal apparatus. They are located within the larynx, and their primary function is to produce sound. These cords are bands of muscle tissue that vibrate when air passes through them, allowing us to speak and sing.
The vibration frequency of the true vocal cords determines the pitch of the sound. This intricate process is controlled by the tension, length, and mass of the vocal cords, which can be adjusted by various muscles within the larynx.
The vibration frequency of the true vocal cords determines the pitch of the sound. This intricate process is controlled by the tension, length, and mass of the vocal cords, which can be adjusted by various muscles within the larynx.
- Pitch: Higher pitch is achieved by tightening and lengthening the vocal cords.
- Volume: Volume is controlled by the force of air passing through the cords, with more force increasing the volume.
False Vocal Cords
The false vocal cords, also known as vestibular folds, are located just above the true vocal cords within the larynx. Unlike the true vocal cords, they do not play a direct role in sound production. Instead, they serve protective and supportive functions.
They form a seal over the glottis (the opening between the vocal cords) when swallowing, helping to prevent food or liquid from entering the airway. This action is crucial for protecting the respiratory tract from potential harm or irritation.
They form a seal over the glottis (the opening between the vocal cords) when swallowing, helping to prevent food or liquid from entering the airway. This action is crucial for protecting the respiratory tract from potential harm or irritation.
- Protection: The false vocal cords help prevent aspiration by closing the glottis.
- Lubrication: They also support the true vocal cords by contributing to the moisture needed for proper functioning.
Larynx
The larynx, commonly referred to as the "voice box," is a crucial part of the respiratory system. Situated in the neck, it is responsible for sound production and air passage. Within the larynx, both the true and false vocal cords are housed, marking it as the focal point of voice generation.
The larynx is primarily composed of cartilages, ligaments, and muscles, which allow for its flexible movement. It plays several roles:
The larynx is primarily composed of cartilages, ligaments, and muscles, which allow for its flexible movement. It plays several roles:
- Sound Production: Houses the vocal cords essential for creating sound.
- Airway Protection: Prevents food and drink from entering the lower respiratory tract by the action of the epiglottis.
- Breathing: Allows air to flow into the lungs.
Visceral Pleura
The visceral pleura is a thin, delicate membrane that envelops the surface of the lungs. It is one of the two layers of the pleura, with the parietal pleura being the other, lining the inner chest wall and diaphragm.
This serous membrane plays critical roles in respiratory function by:
This serous membrane plays critical roles in respiratory function by:
- Providing a Smooth Surface: Facilitates frictionless movement of the lungs against the chest cavity during breathing.
- Maintaining Lung Shape: Contributes to the mechanism of keeping the lungs inflated via pleural pressure.
- Lubrication: Secretes a small amount of lubricating fluid, reducing friction during lung expansion and contraction.
Alveoli
Alveoli are small, balloon-like structures located at the end of the bronchial tubes in the lungs. They are the basic functional units of the respiratory system, where the crucial process of gas exchange takes place.
Each alveolus is surrounded by a network of capillaries, and they play a vital role in:
Each alveolus is surrounded by a network of capillaries, and they play a vital role in:
- Oxygen Exchange: Oxygen from the inhaled air passes through the walls of the alveoli into the blood.
- Carbon Dioxide Removal: Carbon dioxide from the blood is transferred to the alveoli to be exhaled.
- Optimal Gas Exchange: Their large number and extensive surface area maximize the exchange of gases.
