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05. Human Respiratory System

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Last edited 25 days ago by Learn LoopHQ.

Chapter: 05. Human Respiratory System

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The process of taking in oxygen by the cell, oxidation of food with this oxygen and the release of energy and carbon dioxide is called _ _ _ _ _ _ _ _ _ _ _ _ _.

respiration

Lungs are the main _ _ _ _ _ _ _ _ _ _ _ _ _ organs.

respiratory

The _ _ _ _ _ _ _ _ _ _ _ _ _ open into nasal passages.

nostrils

The opening of trachea (glottis) in pharynx is guarded by a muscular flap called _ _ _ _ _ _ _ _ _ _ _ _ _ or uvula.

epiglottis

Larynx is also called _ _ _ _ _ _ _ _ _ _ _ _ _ or Adam’s apple.

voice box

Sound is produced by vibrations in _ _ _ _ _ _ _ _ _ _ _ _ _.

vocal cords

The larynx connects the _ _ _ _ _ _ _ _ _ _ _ _ _ to the trachea.

pharynx

The wall of trachea is supported with C-shaped rings of _ _ _ _ _ _ _ _ _ _ _ _ _.

cartilage

Inside the lungs, bronchi divide and redivide into _ _ _ _ _ _ _ _ _ _ _ _ _.

bronchioles

Lungs are enclosed in an airtight _ _ _ _ _ _ _ _ _ _ _ _ _ cavity.

thoracic

A large muscular _ _ _ _ _ _ _ _ _ _ _ _ _ forms the floor of thoracic cavity.

diaphragm

Lungs have numerous tiny, thin-walled and air-filled sacs called _ _ _ _ _ _ _ _ _ _ _ _ _.

alveoli

The surface of alveoli is covered with a fine network of _ _ _ _ _ _ _ _ _ _ _ _ _.

blood capillaries

_ _ _ _ _ _ _ _ _ _ _ _ _ is a mechanical process, while _ _ _ _ _ _ _ _ _ _ _ _ _ is a biochemical process.

Breathing, respiration

The process of taking in air rich in oxygen into the lungs is called _ _ _ _ _ _ _ _ _ _ _ _ _.

inhalation

The process of giving out air rich in carbon dioxide is called _ _ _ _ _ _ _ _ _ _ _ _ _.

exhalation

During inhalation, the _ _ _ _ _ _ _ _ _ _ _ _ _ are raised upwards and outwards.

ribs

During exhalation, the diaphragm moves _ _ _ _ _ _ _ _ _ _ _ _ _ (returns to original position).

upwards

The air inhaled has more _ _ _ _ _ _ _ _ _ _ _ _ _ and less _ _ _ _ _ _ _ _ _ _ _ _ _.

oxygen, carbon dioxide

The air exhaled has less _ _ _ _ _ _ _ _ _ _ _ _ _ and more _ _ _ _ _ _ _ _ _ _ _ _ _.

oxygen, carbon dioxide

Limewater turns _ _ _ _ _ _ _ _ _ _ _ _ _ in the presence of carbon dioxide.

milky

Normally, we breathe _ _ _ _ _ _ _ _ _ _ _ _ _ times per minute.

16-18

Breathing rate increases up to _ _ _ _ _ _ _ _ _ _ _ _ _ times per minute during fast running and heavy exercise.

When breathing rate slows down to the extent that we do not get sufficient oxygen, we feel _ _ _ _ _ _ _ _ _ _ _ _ _ or _ _ _ _ _ _ _ _ _ _ _ _ _.

sleepy, drowsy

During external respiration, oxygen combines with _ _ _ _ _ _ _ _ _ _ _ _ _ to form oxyhaemoglobin.

haemoglobin

_ _ _ _ _ _ _ _ _ _ _ _ _ is the breakdown of glucose inside the cells to produce carbon dioxide and energy.

Cellular Respiration

Asthma is a lung disease in which airways get _ _ _ _ _ _ _ _ _ _ _ _ _ and produce extra mucus.

inflamed

Bronchitis is inflammation or swelling of _ _ _ _ _ _ _ _ _ _ _ _ _ tubes.

bronchial

Pneumonia is a _ _ _ _ _ _ _ _ _ _ _ _ _ disease which causes an inflammation of lungs and affects alveoli.

bacterial

Tuberculosis is an infectious bacterial disease caused by _ _ _ _ _ _ _ _ _ _ _ _ _.

Mycobacterium tuberculosis (MTB)

Children are vaccinated with _ _ _ _ _ _ _ _ _ _ _ _ _ injections against TB.

BCG

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