The nasal cavity is a large, air-filled space above
and behind the nose in the middle of the face.
NOSTRIL
Lipids perform various functions in living orgasnims, including
energy reserve (such as triglycerides), structural (such as bilayer
phospholipids) and reguloroty (such as steroid hormones).
TONGUE
The tongue is a sensory organ. Therefore, it
seems that the function of it is very clear: to
taste the different foods.
TEETH
The teeth are the hardest substances in the
human body. Besides being essential
forduewing, the teeth play an important role
in speech.
ORAL CAVITY
The human oral cavity refers to the mouth and all its parts,
including the lips, tongue, teeth, and the ceiling and floor of
the mouth.
JAW
The mandible
(formely also called
the lower jaw) is
an odd, flat, central
and symmetrical.
LUNG
The lungs are the organs
responsible for gas
exchange.
LARYNX
The larynx is also called the voice box because it contains
the vocal cords inside.
TRACHEA
Nomally the trachea is described as a tube, whose only function is the
conduction of air but as we will see later, the trachea also has other
functions.