Exam 3 - BMCC BIO 425 Questions With
Correct answers
Epidermis /- /verified /answer(s)-✔✔- /keratinized /stratified /squamous /epithelium
- /lacks /blood /vessels
- /surface /of /the /skin
- /consists /of /dead /blood /cells /packed /with /keratin
Stem /cells /- /verified /answer(s)-✔✔found /in /the /deepest /layer /of /the /epidermis /(the /basal
/layer) /and /they /divide /to /give /rise /to /keratinocytes
Keratinocytes /- /verified /answer(s)-✔✔synthesizes /keratin
Melanocytes /- /verified /answer(s)-✔✔synthesize /black /to /brown /pigment /(melanin)
Tactile /cells /- /verified /answer(s)-✔✔found /in /the /basal /layer /of /the /dermis /and /are /associated
/with /underlying /dermal /nerve /fiber
Dendritic /cells /- /verified /answer(s)-✔✔found /in /2 /layers /of /the /epidermis, /they /stand /against
/toxins, /microbes /and /detect /such /invaders /then /alert /the /immune /system
Stratum /basale /(basal /surface) /- /verified /answer(s)-✔✔the /lowest /layer /closest /to /the /dermis,
/consists /of /single /layer /cuboidal /to /low /columnar /cells
, Stratum /spinosum /- /verified /answer(s)-✔✔thickest /layer /of /the /epidermis /in /thin /skin,
/several /layers /of /keratinocytes, /dendritic /cells /are /found /in /this /layer, /desmosomes /hold /cells
/together /in /this /layer, /the /cells /are /also /bound /together /by /tight /junctions
Stratum /granulosum /- /verified /answer(s)-✔✔3-5 /layers /of /keratinocytes, /found /more /in /thick
/skin /than /thin /skin
Stratum /lucidum /- /verified /answer(s)-✔✔only /seen /in /thick /skin
Stratum /corneum /- /verified /answer(s)-✔✔consists /of /30 /layers /of /dead, /scaly, /keratinized
/cells /that /form /a /durable /surface /layer /resistant /to /abrasion, /penetration /and /water /loss
The /Dermis /- /verified /answer(s)-✔✔beneath /the /epidermis, /a /connective /tissue /layer
/composed /of /collagen /fibers /and /contains /elastic /and /reticular /fibers, /fibroblasts, /supplied
/with /blood /vessels. /cutaneous /glands /and /nerve /endings
Dermal /papillae /- /verified /answer(s)-✔✔upward /waves /in /the /boundary /between /the /dermis
/and /epidermis
Epidermal /ridges /- /verified /answer(s)-✔✔downward /waves /in /the /boundary /between /the
/dermis /and /epidermis
Papillary /layer /- /verified /answer(s)-✔✔thin /zone /of /areolar /tissue /near /dermal /papillae,
/loosely /organized /for /mobility /of /white /blood /cells /and /other /defenses /against /organisms
/that /are /introduced /through /breaks /in /the /epidermis /also /rich /in /red /blood /cells
Reticular /layer /- /verified /answer(s)-✔✔consists /of /dense /irregular /connective /tissue, /less
/room /for /ground /substance, /clusters /of /adipocytes /(fat /cells) /are /found /here
Correct answers
Epidermis /- /verified /answer(s)-✔✔- /keratinized /stratified /squamous /epithelium
- /lacks /blood /vessels
- /surface /of /the /skin
- /consists /of /dead /blood /cells /packed /with /keratin
Stem /cells /- /verified /answer(s)-✔✔found /in /the /deepest /layer /of /the /epidermis /(the /basal
/layer) /and /they /divide /to /give /rise /to /keratinocytes
Keratinocytes /- /verified /answer(s)-✔✔synthesizes /keratin
Melanocytes /- /verified /answer(s)-✔✔synthesize /black /to /brown /pigment /(melanin)
Tactile /cells /- /verified /answer(s)-✔✔found /in /the /basal /layer /of /the /dermis /and /are /associated
/with /underlying /dermal /nerve /fiber
Dendritic /cells /- /verified /answer(s)-✔✔found /in /2 /layers /of /the /epidermis, /they /stand /against
/toxins, /microbes /and /detect /such /invaders /then /alert /the /immune /system
Stratum /basale /(basal /surface) /- /verified /answer(s)-✔✔the /lowest /layer /closest /to /the /dermis,
/consists /of /single /layer /cuboidal /to /low /columnar /cells
, Stratum /spinosum /- /verified /answer(s)-✔✔thickest /layer /of /the /epidermis /in /thin /skin,
/several /layers /of /keratinocytes, /dendritic /cells /are /found /in /this /layer, /desmosomes /hold /cells
/together /in /this /layer, /the /cells /are /also /bound /together /by /tight /junctions
Stratum /granulosum /- /verified /answer(s)-✔✔3-5 /layers /of /keratinocytes, /found /more /in /thick
/skin /than /thin /skin
Stratum /lucidum /- /verified /answer(s)-✔✔only /seen /in /thick /skin
Stratum /corneum /- /verified /answer(s)-✔✔consists /of /30 /layers /of /dead, /scaly, /keratinized
/cells /that /form /a /durable /surface /layer /resistant /to /abrasion, /penetration /and /water /loss
The /Dermis /- /verified /answer(s)-✔✔beneath /the /epidermis, /a /connective /tissue /layer
/composed /of /collagen /fibers /and /contains /elastic /and /reticular /fibers, /fibroblasts, /supplied
/with /blood /vessels. /cutaneous /glands /and /nerve /endings
Dermal /papillae /- /verified /answer(s)-✔✔upward /waves /in /the /boundary /between /the /dermis
/and /epidermis
Epidermal /ridges /- /verified /answer(s)-✔✔downward /waves /in /the /boundary /between /the
/dermis /and /epidermis
Papillary /layer /- /verified /answer(s)-✔✔thin /zone /of /areolar /tissue /near /dermal /papillae,
/loosely /organized /for /mobility /of /white /blood /cells /and /other /defenses /against /organisms
/that /are /introduced /through /breaks /in /the /epidermis /also /rich /in /red /blood /cells
Reticular /layer /- /verified /answer(s)-✔✔consists /of /dense /irregular /connective /tissue, /less
/room /for /ground /substance, /clusters /of /adipocytes /(fat /cells) /are /found /here
