Biol 181 FINAL ACTUAL EXAM WITH 100% RATED CORRECT
200+ REAL EXAM QUESTIONS AND CORRECT ANSWERS| GRADED
A+ |2025 LATEST VERSION | 100% VERIFIED
What are the 5 cells of the epidermis? - (ANSWER)Stem Cell
keratinocytes cell
melanocytes cell
tactile cell
dendratic cell
What are the 5 layers of the epidermis? - (ANSWER)1. stratum corneum
2. stratum lucidum
3. stratum granulosum
4. stratum spinosum
5. stratum basale
stratum granulosum - (ANSWER)a layer of the epidermis that marks the transition between the
deeper, metabolically active strata and the dead cells of the more superficial strata
stem cells - (ANSWER)undifferentiated cells
divide and give rise to keratinocytes
located in stratum basel
Keratinocytes - (ANSWER)majority of epidermal cells
produce keratin.
Melanocytes - (ANSWER)produce melanin
,only in the basel
dentritic cells - (ANSWER)protects against toxins, microbes ect,
alerts immune system if detected
immune system in the epidermis
stratum basale - (ANSWER)the deepest layer of the epidermis. The process of cell division
(mitosis) occurs in this layer and replenishes the skin cells. this is where skin cancer occurs
stratum spinosum - (ANSWER)a layer that provides strength and flexibility to the skin. Usually
its the thickest stratum, except in thick skin. All cells are pushed upward
stratum granulosum - (ANSWER)3-5 layers of flat keratinocytes, all cells are pushed upwards.
dentritic cells found throughout
stratum lucidum - (ANSWER)seen in thick skin. thin zone is superficial to the granulosum. cells
have no nuclei or other organelles.
stratum corneum - (ANSWER)the most superficial layer of the epidermis consisting of dead
cells.
goes all the way down to the keratinocytes
resistant to abrasion, penetration and water loss.
what are they three connective tissue layers s? - (ANSWER)epidermis
dermis
hypodermis(Subcutaneous tissue)
Dermis - (ANSWER)Inner layer of skin
mainly collagen
, blood vessels
nerve ending
what are the two superfical layers of the dermis - (ANSWER)papillary & reticular
papillary layer - (ANSWER)outer layer of the dermis, directly beneath the epidermis
rich in small blood vessels
reticular layer - (ANSWER)deepest skin layer
less room for ground substance
tears in collagen layers caused by stretching of skin
EX. pregnancy or obesity
Hypodermis - (ANSWER)loose connective tissue layer of skin below the dermis
drugs injected here bc it is highly vascular and absorbs quickly
FAT AND MUSCLE
what are the 7 types of abnormal skin color - (ANSWER)cyanosis
erythema
pallor
albinism
jaundice
hematoma
bronzing
cyanosis - (ANSWER)blue discoloration of the skin due to oxgygen deficiency
200+ REAL EXAM QUESTIONS AND CORRECT ANSWERS| GRADED
A+ |2025 LATEST VERSION | 100% VERIFIED
What are the 5 cells of the epidermis? - (ANSWER)Stem Cell
keratinocytes cell
melanocytes cell
tactile cell
dendratic cell
What are the 5 layers of the epidermis? - (ANSWER)1. stratum corneum
2. stratum lucidum
3. stratum granulosum
4. stratum spinosum
5. stratum basale
stratum granulosum - (ANSWER)a layer of the epidermis that marks the transition between the
deeper, metabolically active strata and the dead cells of the more superficial strata
stem cells - (ANSWER)undifferentiated cells
divide and give rise to keratinocytes
located in stratum basel
Keratinocytes - (ANSWER)majority of epidermal cells
produce keratin.
Melanocytes - (ANSWER)produce melanin
,only in the basel
dentritic cells - (ANSWER)protects against toxins, microbes ect,
alerts immune system if detected
immune system in the epidermis
stratum basale - (ANSWER)the deepest layer of the epidermis. The process of cell division
(mitosis) occurs in this layer and replenishes the skin cells. this is where skin cancer occurs
stratum spinosum - (ANSWER)a layer that provides strength and flexibility to the skin. Usually
its the thickest stratum, except in thick skin. All cells are pushed upward
stratum granulosum - (ANSWER)3-5 layers of flat keratinocytes, all cells are pushed upwards.
dentritic cells found throughout
stratum lucidum - (ANSWER)seen in thick skin. thin zone is superficial to the granulosum. cells
have no nuclei or other organelles.
stratum corneum - (ANSWER)the most superficial layer of the epidermis consisting of dead
cells.
goes all the way down to the keratinocytes
resistant to abrasion, penetration and water loss.
what are they three connective tissue layers s? - (ANSWER)epidermis
dermis
hypodermis(Subcutaneous tissue)
Dermis - (ANSWER)Inner layer of skin
mainly collagen
, blood vessels
nerve ending
what are the two superfical layers of the dermis - (ANSWER)papillary & reticular
papillary layer - (ANSWER)outer layer of the dermis, directly beneath the epidermis
rich in small blood vessels
reticular layer - (ANSWER)deepest skin layer
less room for ground substance
tears in collagen layers caused by stretching of skin
EX. pregnancy or obesity
Hypodermis - (ANSWER)loose connective tissue layer of skin below the dermis
drugs injected here bc it is highly vascular and absorbs quickly
FAT AND MUSCLE
what are the 7 types of abnormal skin color - (ANSWER)cyanosis
erythema
pallor
albinism
jaundice
hematoma
bronzing
cyanosis - (ANSWER)blue discoloration of the skin due to oxgygen deficiency
