Respiratory System
→ The respiratory system is primarily responsible for providing oxygen to the cells of our body, but also works closely with other systems in order to do this.
→ Respiration: → The act of breathing - the uptake of oxygen and the removal of carbon dioxide from the body.
→ Ventilation: → The movement of air into an out of the lungs.
FUNCTIONS:
→ Provides oxygen to the cells of the body and removes carbon dioxide from them.
→ Filters, warms and humidifiers the air you breathe.
→ Organs in the respiratory system also plays a role in speech and the sense of smell.
SPEECH:
→ The respiratory system allows speech. Exhaled air runs over the vocal cords inside the throat.
→ The sound of the voice depends on:
↳ The tension and length of the vocal cords.
↳ The shape of the chest.
↳ How much air is being exhaled.
STRUCTURES:
→ The respiratory system consists of three major areas:
→ The airway: → Nose, mouth, pharynx, larynx, trachea, bronchi and bronchioles.
→ The lungs: → Passes oxygen into the body and carbon dioxide out of it.
→ Respiration muscles: → Diaphragm & intercostal muscles.
→ Nose / Nasal cavity: → The primary tract through which air moves.
↳ The nose is made of cartilage, bone, muscle and skin, and protects the nasal cavity.
↳ The nasal cavity, warms, moisturises and filters air that enters the body before it goes into the lungs.
↳ Hairs and mucus, trap, dust, and other contaminants.
↳ Exhaled air returns moisture and heat to the nasal cavity before exiting the body.
→ Mouth: → The secondary tract through which breathing takes place and is used when extra air is needed.
↳ Allows more air to enter the body quicker.
→ Pharynx: → This is the throat which is a muscular funnel that goes from one end of the nasal cavity to the oesophagus and larynx.
↳ It contains the epiglottis, which is a flap of cartilage that moves between the trachea and oesophagus, blocking the correct passage,
depending if you are eating or not - this prevents choking.
↳ Sits above the larynx.
→ Larynx: → The voice box.
↳ Contains vocal cords and is constructed of cartilage.
→ Trachea: → The windpipe; made of cartilage rings.
↳ It connects the larynx to the bronchi and allows passage of air into the lungs - it contains mucus to trap external bodies from reaching
on the lungs. Mucus is then removed towards the pharynx, where it is swallowed and digested.
→ The respiratory system is primarily responsible for providing oxygen to the cells of our body, but also works closely with other systems in order to do this.
→ Respiration: → The act of breathing - the uptake of oxygen and the removal of carbon dioxide from the body.
→ Ventilation: → The movement of air into an out of the lungs.
FUNCTIONS:
→ Provides oxygen to the cells of the body and removes carbon dioxide from them.
→ Filters, warms and humidifiers the air you breathe.
→ Organs in the respiratory system also plays a role in speech and the sense of smell.
SPEECH:
→ The respiratory system allows speech. Exhaled air runs over the vocal cords inside the throat.
→ The sound of the voice depends on:
↳ The tension and length of the vocal cords.
↳ The shape of the chest.
↳ How much air is being exhaled.
STRUCTURES:
→ The respiratory system consists of three major areas:
→ The airway: → Nose, mouth, pharynx, larynx, trachea, bronchi and bronchioles.
→ The lungs: → Passes oxygen into the body and carbon dioxide out of it.
→ Respiration muscles: → Diaphragm & intercostal muscles.
→ Nose / Nasal cavity: → The primary tract through which air moves.
↳ The nose is made of cartilage, bone, muscle and skin, and protects the nasal cavity.
↳ The nasal cavity, warms, moisturises and filters air that enters the body before it goes into the lungs.
↳ Hairs and mucus, trap, dust, and other contaminants.
↳ Exhaled air returns moisture and heat to the nasal cavity before exiting the body.
→ Mouth: → The secondary tract through which breathing takes place and is used when extra air is needed.
↳ Allows more air to enter the body quicker.
→ Pharynx: → This is the throat which is a muscular funnel that goes from one end of the nasal cavity to the oesophagus and larynx.
↳ It contains the epiglottis, which is a flap of cartilage that moves between the trachea and oesophagus, blocking the correct passage,
depending if you are eating or not - this prevents choking.
↳ Sits above the larynx.
→ Larynx: → The voice box.
↳ Contains vocal cords and is constructed of cartilage.
→ Trachea: → The windpipe; made of cartilage rings.
↳ It connects the larynx to the bronchi and allows passage of air into the lungs - it contains mucus to trap external bodies from reaching
on the lungs. Mucus is then removed towards the pharynx, where it is swallowed and digested.
