To solve this labeling task, we need to identify the anatomical structures shown in the skin model. This model is divided into three sections representing different body parts: the
Palm/Sole (left), the
Axilla/Armpit (middle), and the
Scalp (right).
Let's break down the labels based on standard anatomical models of this type:
Left Section: Palm or Sole (Thick Skin)
*
a: The outermost layer is the
Epidermis.
*
b: The layer just below the epidermis is the
Dermis.
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c: The bottom layer of the epidermis, the stratum basale.
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d: The top layer of the epidermis, the stratum corneum.
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e: These are
Meissner's Corpuscles, touch receptors found in the dermal papillae.
*
f: These are
Merkel's Discs, touch receptors in the epidermis.
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g: These are
Lamellar (Pacinian) Corpuscles, deep pressure receptors found deep in the dermis/hypodermis.
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h: This is a
Sweat Gland (Eccrine), which is coiled and produces sweat.
*
i: This is a
Duct of the sweat gland leading to the surface.
*
j: This is a
Hair Follicle (though palms usually don't have hair, models often show the general structure for comparison or include vellus hairs). *Correction*: Looking closely at the left section, there is no hair follicle. The structure labeled 'j' is actually the duct of the sweat gland opening to the surface.
*
k: This is a
Sebaceous Gland (oil gland), usually attached to a hair follicle. *Correction*: In the palm/sole section, sebaceous glands are absent. The structure labeled 'k' is likely a
Ruffini's Corpuscle or similar receptor, or perhaps a mislabeled structure. Let's re-evaluate. Actually, looking at the far left, 'k' is a yellow structure. It's likely a
Meissner's Corpuscle or a
Merkel's cell. Wait, 'e' is the Meissner's. 'f' is the Merkel's. 'g' is the Pacinian. 'h' is the sweat gland. 'i' is the duct. 'j' is the opening. 'k' is a yellow structure, likely a
Ruffini ending (stretch receptor).
Middle Section: Axilla (Armpit) - Thin Skin with Hair
*
a:
Epidermis.
*
b:
Dermis.
*
c:
Stratum Basale.
*
d:
Stratum Corneum.
*
e:
Meissner's Corpuscle.
*
f:
Merkel's Disc.
*
g:
Pacinian Corpuscle.
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h:
Sweat Gland (Apocrine, larger and coiled).
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i:
Duct of the sweat gland.
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j:
Hair Shaft emerging from the follicle.
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k:
Sebaceous Gland (attached to the hair follicle).
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l:
Arrector Pili Muscle (tiny muscle that causes goosebumps).
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m:
Hair Follicle (the sac holding the hair root).
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n:
Adipose Tissue (fat cells in the hypodermis).
Right Section: Scalp - Thick Hair-bearing Skin
*
a:
Epidermis.
*
b:
Dermis.
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c:
Stratum Basale.
*
d:
Stratum Corneum.
*
e:
Meissner's Corpuscle.
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f:
Merkel's Disc.
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g:
Pacinian Corpuscle.
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h:
Sweat Gland.
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i:
Duct.
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j:
Hair Shaft.
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k:
Sebaceous Gland.
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l:
Arrector Pili Muscle.
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m:
Hair Follicle.
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n:
Adipose Tissue.
Now, let's match the letters to the structures more precisely based on common model keys:
*
a: Epidermis
*
b: Dermis
*
c: Stratum Basale (or basal layer)
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d: Stratum Corneum (or horny layer)
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e: Meissner's Corpuscle (touch receptor)
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f: Merkel's Disc (touch receptor)
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g: Pacinian Corpuscle (pressure receptor)
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h: Sweat Gland (coiled structure)
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i: Sweat Gland Duct
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j: Hair Shaft (in axilla and scalp sections)
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k: Sebaceous Gland (oil gland)
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l: Arrector Pili Muscle
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m: Hair Follicle
*
n: Adipose Tissue (fat)
The model also shows blood vessels (red and blue tubes) and nerves (yellow lines).
Final Answer:
a - Epidermis
b - Dermis
c - Stratum Basale
d - Stratum Corneum
e - Meissner's Corpuscle
f - Merkel's Disc
g - Pacinian Corpuscle
h - Sweat Gland
i - Sweat Gland Duct
j - Hair Shaft (in Axilla/Scalp sections)
k - Sebaceous Gland
l - Arrector Pili Muscle
m - Hair Follicle
n - Adipose Tissue (Fat)
Parent Tip: Review the logic above to help your child master the concept of model labeled.
