Respiration and Breathing
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Questions and Answers

What type of respiration involves the complete oxidation of glucose, resulting in carbon dioxide, water, and a large amount of energy?

Aerobic respiration

What are the air sacs at the end of bronchioles in the lungs called, where gas exchange occurs?

Alveoli

What is the name of the disease where the airways become very sensitive and close up, making breathing difficult?

Asthma

What are the narrow branching tubes in the lungs called?

<p>Bronchioles</p> Signup and view all the answers

What is each of the two main divisions of the trachea as it branches into the right and left lungs called?

<p>Bronchus</p> Signup and view all the answers

What gas is produced by respiration that our lungs need to excrete?

<p>Carbon dioxide</p> Signup and view all the answers

What stiffens the trachea to prevent it from collapsing when we inhale?

<p>Cartilage</p> Signup and view all the answers

What are the small projections from the surface of cells lining the airways that sweep mucus up from the lungs called?

<p>Cilia</p> Signup and view all the answers

What is the muscular floor to the chest that lowers when it contracts, increasing the volume of the chest cavity?

<p>Diaphragm</p> Signup and view all the answers

What is the movement of a substance from a region of high to low concentration called, which facilitates gas exchange in the lungs?

<p>Diffusion</p> Signup and view all the answers

What is released by respiration and can be converted from one kind to another but is never destroyed?

<p>Energy</p> Signup and view all the answers

What is the flap of skin that closes off the trachea when you swallow to prevent choking?

<p>Epiglottis</p> Signup and view all the answers

What is the elimination of waste substances from the body called?

<p>Excretion</p> Signup and view all the answers

What is the term for breathing out?

<p>Exhale</p> Signup and view all the answers

What is the process by which oxygen is taken up and carbon dioxide excreted in the lungs or gills?

<p>Gas exchange</p> Signup and view all the answers

What are the organs of gas exchange in fish called?

<p>Gills</p> Signup and view all the answers

What simple sugar is the most important source of energy in the body?

<p>Glucose</p> Signup and view all the answers

What is the protein present in red blood cells that carries oxygen around the body?

<p>Haemoglobin</p> Signup and view all the answers

What is the term for diseases affecting blood vessel function, often worsened by smoking, that can lead to heart attacks?

<p>Heart disease</p> Signup and view all the answers

What are the muscles between the ribs that contract to lift the ribs during inhalation called?

<p>Intercostal muscles</p> Signup and view all the answers

What is the voice box, located at the top of the trachea, called?

<p>Larynx</p> Signup and view all the answers

What is the colourless indicator that turns milky in the presence of carbon dioxide due to calcium carbonate precipitate?

<p>Lime water</p> Signup and view all the answers

What is the organ of gas exchange for air-breathing animals called?

<p>Lung</p> Signup and view all the answers

What is the disease in which lung tissue uncontrollably grows due to mutations in the cells, often caused by chemicals in cigarette smoke?

<p>Lung cancer</p> Signup and view all the answers

What can be caused by particles from tobacco smoke or dust from industrial processes, leading to white blood cells destroying tissue and causing emphysema?

<p>Lung damage</p> Signup and view all the answers

What secretion from cells in the airways traps dirt and bacteria, which are then swept to the throat and killed by stomach acid?

<p>Mucus</p> Signup and view all the answers

What is the hollow space between the nose and the back of the throat that warms and moistens incoming air?

<p>Nasal cavity</p> Signup and view all the answers

What gas is vital for life and needed in respiration?

<p>Oxygen</p> Signup and view all the answers

What are the membranes that line the outside of the lung and the inside of the ribcage called?

<p>Pleural membranes</p> Signup and view all the answers

What type of blood cell is specialized for the carriage of oxygen and gas exchange?

<p>Red blood cell</p> Signup and view all the answers

What is the oxidation of glucose to form carbon dioxide and water with the release of a large amount of energy called?

<p>Respiration</p> Signup and view all the answers

What is one of the 24 bones that makes up the ribcage called?

<p>Rib</p> Signup and view all the answers

What is the framework of 12 pairs of bones attached to the spine and sternum that protects vital organs and expands for inhalation called?

<p>Ribcage</p> Signup and view all the answers

What is the airway connecting the throat to the bronchi called?

<p>Trachea</p> Signup and view all the answers

What is another word for breathing?

<p>Ventilation</p> Signup and view all the answers

What property is very large in the lung to increase the rate of diffusion for gas exchange?

<p>Surface area</p> Signup and view all the answers

What dense network surrounds the alveoli to help increase the rate of gas exchange?

<p>Capillaries</p> Signup and view all the answers

Alveoli should be dry to maximize gas exchange.

<p>False (B)</p> Signup and view all the answers

Thin walls of the alveoli help increase the rate of diffusion.

<p>True (A)</p> Signup and view all the answers

Flashcards

Aerobic

Form of respiration where glucose is oxidised to produce carbon dioxide, water, and energy.

Alveoli

Air sacs in the lungs where gas exchange occurs.

Asthma

A condition causing airway sensitivity, leading to difficulty in breathing.

Bronchiole(s)

Narrow tubes in the lungs branching from the bronchi.

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Diffusion

The movement of substances from high to low concentration, as in gas exchange.

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Exhale

The process of breathing out.

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Gas exchange

The process of taking in oxygen and expelling carbon dioxide.

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Haemoglobin

A protein in red blood cells that carries oxygen.

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Inhale

The process of breathing in.

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Intercostal muscles

Muscles located between the ribs that assist in breathing.

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Larynx

The voice box located at the top of the trachea.

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Lung

The primary organ for gas exchange in air-breathing animals.

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Mucus

A fluid secreted to trap dirt and bacteria in the airways.

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Nasal cavity

Space that warms and moistens incoming air, lined with hair.

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Oxygen

A gas essential for respiration and vital for life.

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Pleural membranes

Membranes surrounding the lungs that facilitate movement.

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Red blood cell

Cells in blood that carry oxygen throughout the body.

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Respiration

The process of oxidizing glucose to produce energy, carbon dioxide, and water.

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Trachea

The airway that connects the throat to the bronchi.

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Ventilation

An alternative term for the process of breathing.

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Carbon dioxide

A waste gas produced during respiration that needs to be expelled.

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Glucose

A simple sugar, the main source of energy for the body.

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Asthma triggers

Factors that can cause asthma symptoms to worsen.

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Emphysema

A lung condition that leads to shortness of breath due to lung damage.

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Lung cancer

A disease characterized by uncontrolled growth of lung cells, often due to smoking.

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Surface area

The size of the lung that aids effective gas exchange.

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Moisture in alveoli

Keeps gases dissolved for efficient gas exchange.

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Study Notes

Respiration

  • Respiration is the oxidation of glucose to produce carbon dioxide, water, and energy.
  • Aerobic respiration is a type of respiration where glucose is completely broken down, releasing a considerable amount of energy.
  • Glucose is a crucial energy source for the body.
  • Oxygen is essential for respiration.
  • Carbon dioxide is a waste product of respiration.
  • Energy is released during respiration and is convertible.

Breathing

  • Breathing (or ventilation) involves taking in oxygen and releasing carbon dioxide.
  • Inhalation (breathing in) increases chest cavity volume.
  • Exhalation (breathing out) decreases chest cavity volume.
  • Diaphragm and intercostal muscles are crucial for breathing. The diaphragm lowers when it contracts, increasing chest cavity volume. Intercostal muscles lift and expand ribs to facilitate inhalation.
  • Trachea is the airway connecting the throat to the bronchi.
  • Bronchi are the two main divisions of the trachea leading to the lungs.
  • Bronchioles are the smaller branching tubes within the lungs.
  • Alveoli are tiny air sacs at the end of bronchioles where gas exchange occurs.
  • Gas exchange happens between the air in the alveoli and the blood, where oxygen is absorbed and carbon dioxide is released. Key for this process is the thin walls of alveoli and capillaries.
  • Surface area of the alveoli is significant for efficient gas exchange. Alveoli and capillaries are thin and moist so that gas diffusion is quick.
  • Haemoglobin carries oxygen in red blood cells.
  • Nasal cavity warms and moistens incoming air.
  • Mucus traps particles and bacteria in the airways.
  • Cilia sweep mucus and trapped particles away from the lungs.
  • Cartilage in the trachea prevents it from collapsing.
  • Epiglottis prevents food from entering the trachea.

Associated Conditions and Processes

  • Asthma: a condition where airways become sensitive and constrict, making breathing difficult.
  • Lung cancer: uncontrolled growth of lung tissue, often from cigarette smoke.
  • Heart disease: a group of diseases affecting blood vessels, often related to smoking.
  • Lung damage: resulting from particles like tobacco smoke or industrial dust.
  • Excretion is the removal of waste from the body. Excretion of carbon dioxide happens via the lungs.
  • Lime water is a chemical indicator that turns milky in the presence of carbon dioxide.
  • Gills in fish are organs for gas exchange in water.

Terms and Definitions

  • Diffusion: The movement of a substance from high to low concentration.
  • Larynx (voice box): the top of the trachea connected to the mouth, responsible for vocal sound production.
  • Pleural membranes: membranes lining the lungs and ribcage, permitting smooth lung movement.

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Description

The quiz text discusses respiration, the oxidation of glucose to produce energy, carbon dioxide, and water. It covers aerobic respiration, where glucose is completely broken down. Breathing, involving inhalation and exhalation and the roles of the diaghragm, trachea, and intercostal muscles are also discussed.

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