Podcast
Questions and Answers
What is the primary function of the epiglottis?
What is the primary function of the epiglottis?
- To produce sound by vibrating when air passes over it.
- To close the larynx during swallowing, preventing food from entering the trachea. (correct)
- To filter out dust particles from entering the trachea.
- To warm and moisten the air before it enters the lungs.
Which structure connects the nose and mouth to the larynx?
Which structure connects the nose and mouth to the larynx?
- Trachea
- Pharynx (correct)
- Bronchi
- Esophagus
What two components are present in the nasal cavity that help trap and prevent the entry of dust particles and microbes?
What two components are present in the nasal cavity that help trap and prevent the entry of dust particles and microbes?
- Capillaries and cartilage
- Cilia and alveoli
- Bronchioles and blood vessels
- Mucous membrane and small hairs (correct)
What is the role of blood capillaries in the mucous membrane of the nasal cavity?
What is the role of blood capillaries in the mucous membrane of the nasal cavity?
What is the approximate length of the trachea and what is its structural support?
What is the approximate length of the trachea and what is its structural support?
Which of the following best describes the function of the C-shaped cartilages in the trachea?
Which of the following best describes the function of the C-shaped cartilages in the trachea?
What are the two smaller tubes that the trachea divides into?
What are the two smaller tubes that the trachea divides into?
What are the lungs located in?
What are the lungs located in?
Which of the following describes the location of the larynx in relation to the trachea?
Which of the following describes the location of the larynx in relation to the trachea?
What is the role of the fluid between the pleural membranes?
What is the role of the fluid between the pleural membranes?
What is the purpose of oxygen in the context of cellular respiration?
What is the purpose of oxygen in the context of cellular respiration?
What is the Adam's apple and what is it made of?
What is the Adam's apple and what is it made of?
What are the small air sacs in the lungs called?
What are the small air sacs in the lungs called?
Which of the following best describes the location of the pharynx in the respiratory system?
Which of the following best describes the location of the pharynx in the respiratory system?
What is the general term for the membrane enclosing each lung?
What is the general term for the membrane enclosing each lung?
In the chemical equation of respiration, what are the products (outputs)?
In the chemical equation of respiration, what are the products (outputs)?
Why is the larynx called the 'voice box'?
Why is the larynx called the 'voice box'?
What is the function of the viscous fluid that is between the pleura?
What is the function of the viscous fluid that is between the pleura?
What is the full process of respiration?
What is the full process of respiration?
The trachea branches split into two, these are known as:
The trachea branches split into two, these are known as:
Flashcards
Respiration
Respiration
A chemical process where energy is produced from food by living cells, involving the catabolism of food by oxygen.
Nasal Cavity
Nasal Cavity
Two ducts that penetrate the skull, containing inner and outer nostrils, a mucous membrane, small hairs, and blood capillaries.
Mucous Membrane
Mucous Membrane
Moistens incoming air and traps dust particles and microbes.
Blood Capillaries (in Nasal Cavity)
Blood Capillaries (in Nasal Cavity)
Signup and view all the flashcards
Pharynx
Pharynx
Signup and view all the flashcards
Larynx
Larynx
Signup and view all the flashcards
Adam's Apple
Adam's Apple
Signup and view all the flashcards
Epiglottis
Epiglottis
Signup and view all the flashcards
Trachea
Trachea
Signup and view all the flashcards
Bronchi
Bronchi
Signup and view all the flashcards
Bronchioles
Bronchioles
Signup and view all the flashcards
Pleura
Pleura
Signup and view all the flashcards
Study Notes
- All living things need oxygen to survive
- Respiration is a chemical process that produces energy from food within living cells
- In respiration, food is catabolized by oxygen
- Energy is a byproduct of food catabolization
- Equation of respiration: C6H12O6 + 6 O2 -> 6 CO2 + 6 H2O
- Living things use energy for movement, growth, reproduction, and nutrition
Structure of the Respiratory System
- The human respiratory system includes:
Nasal Cavity
- Consists of two ducts penetrating the skull
- It combines with inner nostrils inside and outer nostrils outside.
- The nasal cavity is covered by mucous membrane that moistens air
- Small hairs at the entrance filter air
- Hairs and mucous layers secreted by glands prevent dust, microbes, and particles from entering
- Mucous membrane contains blood capillaries to warm the air
Pharynx
- Common passage between the digestive and respiratory systems
- The mouth and nose are connected to each other in the posterior region of the pharynx
- Air coming from the nose or mouth passes into the larynx through the pharynx
Larynx
- Cone-shaped structure lined with mucous membrane
- Located above the trachea
- Consists of nine pieces of cartilage combined with elastic membrane
- Adam's apple is a C-shaped cartilage that can be felt in the neck.
- Composed of two connected pieces
- Epiglottis, the second important cartilage, is a valve that closes the larynx while swallowing, preventing food from entering the trachea
Trachea
- Tube located near the oesophagus
- Approximately 12 cm long
- Air can enter and leave the lungs
- Contains 16-20 C-shaped cartilages
- Trachea's structure helps the oesophagus to pass through it
Bronchi
- The inner surface of trachea contains mucous membrane
- Mucous glands and cilia catch and throw foreign particles
- Trachea divides into two branches called bronchi
- The left bronchus is longer than the right bronchus
- Bronchi divide into smaller branches
Bronchioles
- In the lungs, bronchi divide into bronchioles, which end in small rooms
- Walls of these small rooms are surrounded by network from pulmonary artery
Lungs
- Lungs are situated in chest cavity
- Muscular diaphragm forms the floor of the chest cavity
- Right lung lobes differ from the left lung lobes
Lung Membranes
- Each lung is covered by a double membrane known as pleura
- The outer membrane is the parietal pleura, and the inner membrane is the visceral pleura
- The cavity between these membranes is called the pleural cavity
- Pleural fluid facilitates lung movement during breathing
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
