Basic Information
TRUE or FALSE: The integumentary system is the body's largest organ.
TRUE
What are the layers of the epidermis?
stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum
What are the two main layers of the dermis?
papillary & reticular layer
What are the 3 main functions of the hypodermis?
energy storage, insulation, and protection
The integumentary is the body's ____ layer
outer
Name the layer: Found only in thick skin, like the palms of the hands and soles of the feet.
stratum lucidum
What cells are predominantly found in the dermis?
langerhans cells
Is the hypodermis avascular or vascular?
vascular
Name the layers of the skin
Which layer is responsible for producing new skin cells?
stratum basale
What are tactile cells?
Sensory nerve cells
What type of cell is the most abundant in the hypodermis?
adipocytes
What makes up the integumentary system?
Skin, nails, hair, & glands and nerves on your skin
What is the function of the stratum corneum?
Protects the body from environmental damage and prevents water loss
What are dermal papillae ridges, and where are they found?
They determine a person's fingerprint and are found in the papillary layer of the dermis.
The thickness of the hypodermis may vary in different parts of the body. Why is that?
the amount of fat tissue present may vary
What are dermal papillae ridges, and where are they found?
They determine a person's fingerprint and are found in the papillary layer of the dermis.
Why does the granulosum layer start to decompress and squish? Wouldn’t it make more sense for the deeper layers to appear more squamous since they're under pressure from the top layers of the epidermis?
Cells start to die off is because the lower layers of the granulosum are preventing water from exiting, making the top layers dehydrate, shrivel, and lose volume which leads to their transition to a more squamous look.
Series of lines across human body that correspond to the natural orientation of collagen fibers in the Dermis.
Cleavage lines
Besides fat cells, what is another important component of the hypodermis that aids it with its structure?
connective tissue with collagen and elastin