respiration in humans

RESPIRATION IN HUMANS

OBJECTIVES

• DEFINITION AND SIGNIFICANCE OF RESPIRATORY SYSTEM.• AEROBIC RESPIRATION.• ANAEAROBIC RESPIRATION.•MECHANISM OF BREATHING.• DIORDERS OF RESPIRATORY SYSTEM.

BURNING FOOD

EARTH WAS BOURNE OUT OF THE SOLAR NEBULA WITHOUT OXYGEN.

WHY IS IT SO,

IF THER WAS NO OXYGEN, HOW DID LIFE BEGIN?

A THIRST FOR ENERGY- AN ANCIENT BATTLE

Life really didn’t need oxygen, but there is one thing that all life needs……….And that is ENERGY.

The battle for energy is an ancient one, and even today, people war with one another for sources of energy such as fossil fuel.

How does body convert energy stored into food- energy for body use?

RESPIRATION

•RESPIRATION IS THE BREAKDOWN OF FOOD (GLUCOSE) TO RELEASE ENERGY.

•THE RESPIRATORY SYSTEM IS WHAT CONTROLS BREATHING. IT BRINGS IN THE OXYGEN YOUR BODY NEEDS AND GETS RID OF THE CARBON DIOXIDE THAT IS LEFT OVER.

THERE ARE TWO TYPES OF

RESPIRATION AEROBIC RESPIRATION

ANAEROBIC RESPIRATION

AEROBIC RESPIRATION• IS THE OXIDATION OF GLUCOSE IN THE

PRESENCE OF OXYGEN WITH THE RELEASE OF A LARGE AMOUNT OF ENERGY.

• CARBON DIOXIDE AND WATER ARE RELEASED AS WASTE PRODUCTS.

• THOSE WHO DONOT USE OXYEN TO OXIDIZE FOOD

ANAEROBIC RESPIRATION

• IS THE BREAKDOWN OF FOOD MOLECULES IN THE ABSENCE OF OXYGEN.

• ANAEROBIC RESPIRATION RELEASES LESS ENERGY THEN AEROBIC RESPIRATION.

How The Human Respiratory System Works?

The Respiratory System helps you breathe. When the human body breathes air, it gets sucked through the nostrils or the mouth. Then it goes through the trachea (wind pipe). The trachea divides into tubes called bronchi which carry the air on to each lung

MECHANISM OF BREATHING

COMPONENTS OF THE UPPER RESPIRATORY TRACK

UPPER RESPIRATORY TRACK FUNCTIONS

Passageway for respirationReceptors for smellFilters incoming air to filter larger foreign materialMoistens and warms incoming airResonating chambers for voice

COMPONENTS OF THE LOWER RESPIRATORY

TRACK

LOWER RESPIRATORY TRACK FUNCTIONS

Larynx: maintains an open airway, routes food and air appropriately, assists in sound productionTrachea: transports air to and from lungsBronchi: branch into lungsLungs: transport air to alveoli for gas exchange

RESPIRATION IN CELL

FOUR RESPIRATION PROCESSES

Breathing (ventilation): air in to and out of lungsExternal respiration: gas exchange between air and bloodInternal respiration: gas exchange between blood and tissuesCellular respiration: oxygen use to produce ATP, carbon dioxide as waste

SOME AMAZING FACTS ABOUT THE

RESPIRATORY SYSTEMYour right lung has three lobes and your

left lung only has two?

The right lung is a little larger than the

left lung?

A person sleeping almost always

breathes twelve or fifteen times a

minute?

SOME MORE FACTS

The exhaling rate is faster in kids than

in adults?

infants breathe 40-60 times per

minutes.

The fastest recorded “ sneeze speed”

is 165 km per hour?

It is healthier to breathe through your

nose than your mouth, because your

nose hairs and mucus clean the air.

DISORDERS OF RESPIRATORY SYSTEM

SMOKING CAUSE FATAL LUNG CANCER

PASSIVE SMOKING

Non-smokers exposed to cigarette smoke frequently have increased chance of lung cancer

CHRONIC BRONCHITIS

PNEUMONIA

Acute inflammation of the lungs.

High fever, chills, headache, cough and chest pain.

Bacterial, fungal, or viral infections.

ASTHMA

cough and thick mucus secretion.

Pollen, cats and cockroaches proteins, infections and emotional stress.

OUT WITH THE BAD……. IN WITH THE GOOD

THANKYOU FOR BEING ATTENTIVE THROUGHOUT

THE SESSION