Dermis Flashcards
The Papillary Dermis consists of
Thin, loose connective tissue
The Papillary Dermis’ connective tissue allows for
Blood vessels to move around and change position
The Reticular Dermis consists of
Thick, dense connective tissue
The Reticular Dermis functions to
Anchor things down
What is found in the Reticular Dermis?
- Sweat and exocrine glands
- Hair follicles
The Hypodermis contains a
Layer of fat that absorbs shock and insulates tissue
What are the types of glands?
- Holocrine
- Apocrine
- Merocrine
Holocrine glands release secretions by
Disintegrating the entire cell
Holocrine glands specifically release
Sebum
Holocrine glands can be found on the
- Back
- Face
- Chest
Apocrine glands release secretions from the
Apex of the cell
The Apocrine glands release
Proteins, lipids and steroids
Apocrine glands can be found
- Armpits
- Groin
- Around nipples
Apocrine glands release their contents into
Hair follicles
Merocrine release
Sweat via exocytosis
Merocrine glands are especially found in
Palms and soles of feet
Along with sweat, Merocrine glands also release
Lysozymes + antibodies
A Delta Fibers perceive
Pain and temperature
What determines the function of mechanoreceptors?
Their structure
What are the different Mechanoreceptors?
- Meissner Corpuscle
- Pacinan’s Corpuscle
- Merkel’s Disk
- Ruffini’s Corpuscle
- Hair Follicle Receptor
The Meissner Corpuscle has several
Layers of discs found within cells
The Meissner Corpuscle perceives
Light touch in non-hairy skin
The Meissner Corpuscle is in need of
Constantly changing stimuli
The Meissner Corpuscle is located in the
Papillary Dermis
Pacinan’s Corpuscle is found in
Non-hairy and hairy skin
In what layer of the skin is Pacinan’s Corpuscle found in?
The hypodermis
Pacinan’s Corpuscle responds to
Deep touch
Merkel’s Disk is located in which layers of the skin?
- Stratum Basale
- Papillary Dermis
Merkel’s Disk perceives
Light touch in hairy and non-hairy skin
What kind of stimuli is good for Merkel’s Disk?
Sustained stimuli
Ruffini’s Corpuscle responds to
Sustained touch
Ruffini’s Corpuscle is located in the
Reticular dermis
Ruffini’s Corpuscle relies the most on
Collagen
The Hair Follicle Receptor responds to
Light touch on hairy skin
Hair Follicle Receptors are found in which layer of the skin?
Reticular dermis
What kind of stimuli do Hair Follicle Receptors require?
Constantly changing
