The tongue is a muscular organ in the mouth that manipulates food and enables taste. It has various papillae (bumps) that house taste buds - circumvallate papillae are the largest visible at the back of the tongue, foliate papillae are on the sides, and filiform papillae cover the top in many projections. The tongue is innervated by the glossopharyngeal nerve and enables the perception of the five basic tastes.

2. - is a muscular organ in
the mouth of a typical
vertebrate. It manipulates food
for mastication and swallowing
as part of the digestive process,
and
. The tongue's upper
surface (dorsum) is covered by
taste buds housed in numerous
lingual papillae.
- are small structures
present within the papillae of the
tongue.
– are normal bumps on the
tongue

4. The have
different structures and are accordingly classified
as (or vallate), , , and
.
- are so large and round. They
are visible to the naked eye, located at the base of your
tongue. They house several thousand taste buds.
are on the back edges of
your tongue. Each one contains several hundred taste
buds.
- are projections
scattered on the tip, containing taste buds and are
often unnoticed during a routine oral examination.

5. - functions as a
. They create a rough texture on the surface of
the tongue that helps when you're chewing your food.
- are very sensitive microscopic hairs in the taste
buds. Those about
how something tastes, so you know if it's sweet, sour, bitter,
or salty.
– is a mixed nerve that is sensory for
taste and for the carotid sinus and body, and motor for
secretion of saliva and contraction of the pharynx.
are found in the taste
buds of fungiform, foliate, and circumvallate papillae
located mainly on the tongue.

6. >Largest organ in the body
>Has 3 primary layers:
, , and
.
FUNCTIONS:
-Covers the whole body
-Prevents harmful organisms
form entering the body
-Protects the body from too
much heat from the sun
-Helps the body maintain its
normal temperature by
perspiring a lot
-Let person feel texture of
things and let other feel through
your touch
Objects can be soft hard, rough
or smooth, or hot or cold.

7. • Outermost layer of the skin
• Constantly shed off and replaced by new
cells
: protect the skin from the
environment against harmful organism
and substances.
• Has opening called pores, from which
the hair shaft grow
• It also contain cells that produces
melanin
– a pigment that gives color to
the skin. The darker the skin, more
melanin a person have. People who stays
longer under the sun need more melanin
to protect the skin from harmful effects
of the sun rays.

8. • Inner layer of the skin, and also
called as “true skin”
• Contains blood vessels, hair follicles,
sweat glands, oil glands, and nerve
endings
– produces oil which
lubricates and makes the skin soft
and smooth.
– produces sweat that
contains excess salt, water, and
other body waste
– contains receptors
that send signals to the brain
– interprets the message,
knowing the texture or temperature
of the things that the body is in
contact with.

9. • Lowermost layer of the
skin, below the dermis
• Layer where fats
accumulate or stored
The layer of skin beneath the
dermis is sometimes called
the ,
subcutis, or layer.

10. - result from using strong or
harsh soap. Apply lotion or moisturizer
as prevention.
- resulted from too much
exposure to sunlight
- When going out during sunny days make
sure to apply sunblock or sunscreen to
avoid getting sunburned.
- Illness caused by a virus
- Very itchy, red, ringlike
patch on the skin

11. 1. Take a bath daily to make the skin clean and healthy. Use your
own towel and soap, sharing things with other may transfer
skin infections.
2. Early in the morning is the best time to get Vitamin D from the
sun which is good for the skin.
3. When going out at 10 o’clock in the morning to 4 o’clock in the
afternoon use an umbrella to protect the skin from the harmful
effect of sunrays.
4. Eat plenty of fruits and vegetables they contains nutrients
that is good for the skin. Drink plenty of water helps remove
body wastes.
5. Avoid scratching the skin when it is itchy it will cause wound.
Apply calamine or lotion to suppress the itching.