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D312 A&P 1 With LAB StudyGuide Section 1 Newest
2025-2026 /D312 A&P 1 With LAB StudyGuide
Section 1 Preparation / D312 A&P 1 With LAB
StudyGuide Section 1 Practice Exam With 300
Complete Questions And Correct Detailed Answers
|Already Graded A+|Brand New Version!!
Define Merkel cells
Epidermal cells that form the border between the epidermis and the
dermis
Define keratin
A tough fibrous protein that serves to protect the skin
Define melanin
A pigment in the skin that gives hair and skin its color, also helps protect
the living cells of the epidermis from ultraviolet radiation damage
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Define stratum corneum
The most superficial layer of the epidermis that is exposed to the outside
environment
Define stratum lucidum
Smooth, translucent layer of the epidermis located just above the stratum
granulosum and below the stratum corneum
Define stratum granulosum
3-5 layers of mature keratinocytes that help make the skin waterproof
Define stratum spinosum
Composed of 8-10 layers of keratinocytes, formed as a result of cell
division in the stratum basale
Define stratum basale
Deepest epidermal layer and attaches the epidermis to the basal lamina,
below which lie layers of the dermis
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Define eleidin
Clear, protein-bound lipid found in the stratum lucidum that is derived
from keratohyalin and helps prevent water loss
Define keratonyalin
Granulated protein found in the stratum granulosum
Define desmosome
Structure that forms an impermeable junction between cells
Define dermal papilla (dermal papillae)
Extension of the papillary layer of the dermis that increases surface
contact between the epidermis and the dermis
Define basal cell
Type of stem cell found into the stratum basale and the hair matrix that
continuously undergoes cell division, producing keratinocytes of the
epidermis
, 4|Page
Define Merkel cell
Receptor cell in the stratum basale of the epidermis that responds to the
sense of touch
Define melanocyte
Cell found in the stratum basale of the epidermis that produces pigment
melanin
How does hair respond to cold temperature?
The smooth muscle contracts in response to nerve signals, making the
external shaft "stand up straight" on the skin
Which sensation is sensed by tactile corpuscle?
Touch
Which sensation is sensed by pacinian corpuscle?
Pressure
D312 A&P 1 With LAB StudyGuide Section 1 Newest
2025-2026 /D312 A&P 1 With LAB StudyGuide
Section 1 Preparation / D312 A&P 1 With LAB
StudyGuide Section 1 Practice Exam With 300
Complete Questions And Correct Detailed Answers
|Already Graded A+|Brand New Version!!
Define Merkel cells
Epidermal cells that form the border between the epidermis and the
dermis
Define keratin
A tough fibrous protein that serves to protect the skin
Define melanin
A pigment in the skin that gives hair and skin its color, also helps protect
the living cells of the epidermis from ultraviolet radiation damage
,2|Page
Define stratum corneum
The most superficial layer of the epidermis that is exposed to the outside
environment
Define stratum lucidum
Smooth, translucent layer of the epidermis located just above the stratum
granulosum and below the stratum corneum
Define stratum granulosum
3-5 layers of mature keratinocytes that help make the skin waterproof
Define stratum spinosum
Composed of 8-10 layers of keratinocytes, formed as a result of cell
division in the stratum basale
Define stratum basale
Deepest epidermal layer and attaches the epidermis to the basal lamina,
below which lie layers of the dermis
,3|Page
Define eleidin
Clear, protein-bound lipid found in the stratum lucidum that is derived
from keratohyalin and helps prevent water loss
Define keratonyalin
Granulated protein found in the stratum granulosum
Define desmosome
Structure that forms an impermeable junction between cells
Define dermal papilla (dermal papillae)
Extension of the papillary layer of the dermis that increases surface
contact between the epidermis and the dermis
Define basal cell
Type of stem cell found into the stratum basale and the hair matrix that
continuously undergoes cell division, producing keratinocytes of the
epidermis
, 4|Page
Define Merkel cell
Receptor cell in the stratum basale of the epidermis that responds to the
sense of touch
Define melanocyte
Cell found in the stratum basale of the epidermis that produces pigment
melanin
How does hair respond to cold temperature?
The smooth muscle contracts in response to nerve signals, making the
external shaft "stand up straight" on the skin
Which sensation is sensed by tactile corpuscle?
Touch
Which sensation is sensed by pacinian corpuscle?
Pressure
