INTEGUMENTARY SYSTEM
Introduction for the Integumentary System
1) Also known as your Covering system which is the largest organ in our body.
2) The cellular renewal never stops it is continuous.
The Integumentary system is composed of skin, hair, nails, and exocrine glands (sweat and
sebaceous glands).
3) Parts: (composed largely of keratin, a hardened protein)
a) Nails
b) Skin
c) Hair
Main Functions of the Integument
1) Protection
2) Temperature maintenance
3) Synthesis and storage of nutrients
4) Sensory reception
5) Excretion and secretion
Components:
SKIN NAIL HAIR
Type of Epidermal Cells:
Composed of fingernail &
toenails. located in your hands
and feet. Help to make the backs
of the fingertips stiff and helps
you grip precisely.
- Located all over your body
except in the palm of your hands
and soles of your feet.
- Protects your head from UV
radiation from the sun, cushion,
and insulate your head.
- The nose of the hair traps
foreign particles into the body
and others, like those all over the
rest of your body, act as sensory
receptors.
- It is a structure produced in an
organ called a Hair Follicle.
1) Keratinocytes
- They are created in the stratum
basale and pushed upward
toward the skin's surface.
- These cells make keratin and
act to protect deeper layers of
soft tissue.
- The building blocks of the
tough fibrous protein keratin that
fives structure and durability.
1) Nail plate
- The visible part of the nail.
- The lunula (the whitish half-
moon at the base of the nail) the
rest of the nail is pinkish color
due to the underlying blood
vessels
2) Nail bed or Nail Matrix
- Entire nail body protects the
soft tip of your finger
1) Hair Follicle
- Is living that produces Hair
2) Hair root plexus
- The plexus of nerves that you
can feel the movement of even a
single hair
- Arrector pili are what is
responsible for goosebumps.
3) Hair shaft
- The external part of the hair
