A&P Exam #2 ques ons and answers Updated
Integument
largest system of the body
Outer epidermis
has no blood supply
inner dermis
connec ve ssue
Accessory structures
Hair, nails, mul cellular exocrine glands
Epidermis
"upon" dermis
subcutaneous layer
fat layer, loose connec ve ssue
Fun ons of skin
protects
excretes
maintains body temp
synthesizes vitamin D3
stores lipids
Detects touch, pressure, temp
True
Epidermis is Avascular stra fied squamous epithelium (no blood supply!!!)
Kera nocytes
protein synthesis (make kera n-waterproof barrier)
Thin skin
Covers most of the body
has only four layers of kera nocytes
, Thick skin
for places w/ high amounts of fric on
covers the palm of the hands and soles of the feet
has five layers of kera nocytes
Stratum Lucidum
layer only found in thick skin. Clear layer
Stratum corneum
exposed surface of skin, water resistant, shed and replaced every two weeks (looks like corn
flakes)
Stratum Granulosum
The Grainy layer. stops dividing and starts producing
stratum spinosum
the spiny layer. con nue to divide, increasing thickness of epithelium.
Stratum Germina vum
where mitosis occurs (reproduc on) the germani ve layer.
Epidermal ridges
what forms fingerprints?
Dermal papillae
" ny mounds" strengthen a5achment between epidermis and dermis
Melanocytes
Give us our pigment; contain melanin; "black cells"
protect from UV radia on
protects from sun
Insensible Perspera on
the perspera on that you dont even realize occured (2 liters a day)
Sensible perspera on
The perspera on you no ce (vigorous working out) water excreted by sweat glands
Integument
largest system of the body
Outer epidermis
has no blood supply
inner dermis
connec ve ssue
Accessory structures
Hair, nails, mul cellular exocrine glands
Epidermis
"upon" dermis
subcutaneous layer
fat layer, loose connec ve ssue
Fun ons of skin
protects
excretes
maintains body temp
synthesizes vitamin D3
stores lipids
Detects touch, pressure, temp
True
Epidermis is Avascular stra fied squamous epithelium (no blood supply!!!)
Kera nocytes
protein synthesis (make kera n-waterproof barrier)
Thin skin
Covers most of the body
has only four layers of kera nocytes
, Thick skin
for places w/ high amounts of fric on
covers the palm of the hands and soles of the feet
has five layers of kera nocytes
Stratum Lucidum
layer only found in thick skin. Clear layer
Stratum corneum
exposed surface of skin, water resistant, shed and replaced every two weeks (looks like corn
flakes)
Stratum Granulosum
The Grainy layer. stops dividing and starts producing
stratum spinosum
the spiny layer. con nue to divide, increasing thickness of epithelium.
Stratum Germina vum
where mitosis occurs (reproduc on) the germani ve layer.
Epidermal ridges
what forms fingerprints?
Dermal papillae
" ny mounds" strengthen a5achment between epidermis and dermis
Melanocytes
Give us our pigment; contain melanin; "black cells"
protect from UV radia on
protects from sun
Insensible Perspera on
the perspera on that you dont even realize occured (2 liters a day)
Sensible perspera on
The perspera on you no ce (vigorous working out) water excreted by sweat glands
