FUNCTION OF THE NASAL CAVITY

FILTERS, WARMS, & MOISTENS INCOMING AIR.

THE NOSE FUNCTIONS IN OLFACTION & SPEECH

PARTICLES TRAPPED IN THE MUCOUS ARE CARRIED TO THE PHARYNX & SWALLOWED.

FUNCTIONS OF THE RESPIRATORY SYSTEM

OBTAIN OXYGEN, RELEASE CARBON DIOXIDE, 

FILTER INCOMING AIR, CONTROL TEMPERATURE AND WATER CONTENT OF INCOMING AIR, REGULATION OF ACID-BASE BALANCE AND PRODUCE SOUNDS

FUNCTION OF THE NOSE

AIR CAN ENTER & LEAVE THE NASAL CAVITY (SENSE OF SMELL)

A PART OF THE FACE SUPPORTED BY BONE & CARTILAGE, LINED W/MUCOUS MEMBRANE & COVERED W/SKIN. HAS TWO NOSTRILS (EXTERNAL NARES) THAT PROVIDE OPENINGS.

VOCAL CORDS

PRODUCE SOUNDS BY VIBRATING AS AIR PASSES OVER THEM

• THE PITCH OF A SOUND IS RELATED TO TEH TENSION ON THE CORDS
• THE INTENSITY OF A SOUND IS RELATED TO THE FORCE OF THE AIR PASSING OVER THE CORDS

EPIGLOTTIS

PREVENTS FOOD FROM ENTERING THE LARYNX

TRACHEA (WINDPIPE)

EXTENDS FROM THE LARYNX TO THE PRIMARY BRONCHI

• COMPOSED OF C-SHAPED RINGS OF CARTILAGE & SMOOTH MUSCLE & IS LINED W/PSUEDOSTRATIFIED CILIATED COLUMNAR EPITHELIUM
• SPLITS INTO RIGHT & LEFT BRONCHI
• MUCOUS LINING CONTINUES TO FILTER INCOMING AIR

PART OF THE LARYNX (VOICE BOX)

WHICH IS AN ENLARGEMENT IN THE AIRWAY AT THE TOP OF THE TRACHEA & BELOW THE PHARYNX. IT ALSO CONTAINS THE EPIGLOTTIS, CRICOID CARTILAGE, & THE PAIRED ARYTENOID, CORNICULATE, & CUNEIFORM CARTILAGES, AS WELL AS THE VOCAL CORDS.

LAYERS OF PLEURA

THE LUNGS-PAIRED ORGANS IN THE THORACIC CAVITY ENCLOSED BY THE PLEURAL MEMBRANE.

RIGHT-LUNG HAS 3 LOBES AS THE LEFT-LUNG HAS 2 LOBES.

• PARIETAL PLEURA
• VISCERAL PLEURA

IN B/T THE 2 IS A SPACE (KNOWN AS THE PLEURAL CAVITY OR PLEURA SPACE) W/ SEROUS FLUID (PLEURAL FLUID)

(INSPIRATION)  EXTERNAL INTERCOSTAL MUSCLES (RAISES THE RIBS & CAUSES THE SIZE OF THE THORACIC CAVITY TO INCREASE)

(EXPIRATION)   INTERNAL INTERCOSTAL MUSCLES (FORCEFUL EXHALATION INVOLVES CONTRACTION OF THE INTERNAL INTERCOSTAL & ABDOMINAL MUSCLES)