Exam 3 Lab slides. Flashcards
Layer of skin?
Stratum Basale
Notice lack of lucidum
Chicken Foot- Cornified
Layer of Skin?
Stratum Basale
Human
Layer of Skin?
Type of Skin?
Stratum Corneum Proper
Thick Skin.
Proper due to presenece and exclusion of Lucidum.
Human
Layer of Skin?
Type of Skin?
Stratum Corneum Proper
Thick Skin.
Human
Layer of Skin?
Stratum Corneum
Human Scalp
Layer of Skin?
Dermis.
Human
Layer of Skin?
Stratum Granulosum.
Chicken Foot- Cornified
Layer of Skin?
Stratum Granulosum.
Human
What is the larger main structure shown and marked Structure?
Hair Follicle
Arrector Pilli
Arrector Pilli is a Smooth Muscle.
Human Scalp
Layer of Skin?
Hypodermis.
Human.
Structure & Type of keratin?
Contour Feather
Beta-Keratin
Betakeratin is harder & produced in feathers
Due to being a “Modified Scale”
Structure & Type of keratin?
Down Feather
Beta-Keratin
Betakeratin is harder & produced in feathers
Due to being a “Modified Scale”
Layer of Skin?
Lucidum
Layer of Skin?
Lucidum
Class of Vertebrate this skin is from?
Amphibian.
Salamander.
Class of Vertebrate?
Amphibian.
Frog.
What structure is indicated here?
Arrector Pilli
Human Scalp.
What Cell of the Stratum basale is shown here?
Merkel Cell.
Mechanoreceptor.
Human.
What Cell of the Stratum Spinosum is shown here?
Langerhans
Dendriditic cells.
Human.
Structure stretching from the dermis to epidermis surface?
Duct of an Ecrine Gland
Coiled Part within the Epidermis in Thick skin is called Acrosyringium.
Structure stretching from the dermis to epidermis surface?
Duct of an Ecrine Gland
Coiled Part within the Epidermis in Thick skin is called Acrosyringium.
Skin Gland?
Eccrine.
Coil Secretion Cells Shown.
Skin Gland?
Eccrine
Coil Secretion Cells Shown.
Notice Smaller Lumen
What type of cell within an eccrine gland is circled?
Dark Cell.
Notice Narrow Base and Wide Apex.
What type of cell within an eccrine gland is circled?
Clear/ Light Cell.
Notice Wide Base and Narrow apex.
What type of Cell at the end of the pointer just outside the Gland?
Myoepithelial Cell.
What gland is shown within the Ear?
Ceruminous Gland.
Ear Canal Epidermis and Dermis
Gland Shown?
Apocrine
Peri-Anal Region (Masson)
Gland Shown?
Apocrine.
Perianal Region (H&E)
What is thet state of this mammary gland?
Inactive.
Notice lightly stained and not many luminal spaces seen.
What is thet state of this mammary gland?
Active
Notice darker staining and more visible lumens.
What Glands are shown?
Mammary Glands
Notice the nearby adipose and lost of connective tissues.
Gland Circled?
Apocrine
Larger Luminal Space.
Peri-anal region (Masson)
Gland Circled?
Eccrine
Smaller Luminal Space and smaller over all.
Peri-anal region (Masson)
Structures Circled?
Hair Follicles.
Gland Circled?
Sebaceous Gland.
Peri-anal region (Masson)
Dermal Papilla.
Dermal Sheath.
Inner Root Sheath.
Outer Root Sheath.
Dermal Papilla.
Dermal Papilla.
Dermal Sheath.
Layer of Hair?
Cortex
Layer of Hair?
Cuticle
Layer of Hair?
Medulla
Blue:
Red:
Green:
Orange:
Entire non-green structure:
Blue: Inferior Umbilicus.
Red: Superior Umbilicus.
Green: Vanes.
Orange: Rachis.
Entire: Shaft.
Contour Feather:
A: Barbule
B: Hooks
C: Flange
D: Barb
Identify this Integument Gland.
Uropygial Gland
Functions as a sebaceous gland.
Spotted Kiwi
Identify this Integument Gland.
Uropygial Gland
Functions as a sebaceous gland.
Histology is very similar to sebaceous glands in other vertebrates.
Spotted Kiwi
What class of vertebrate is this from?
Reptile.
Identify A-C Layers.
Type of Keratin in D&E?
A: Epidermis.
B: Dermis.
C: Hypodermis.
D: Beta.
E: Alpha.
D&E make up the Stratum Corneum.
Reptile Skin.
Class of Vertebrate?
What are the ovoid structures?
Avian
Developing Feather Follicles.
Chicken.
Chromatophores
Melanophores in this skin.
Reptile.
What are the “Finger-like” Projections of the dermis?
Dermal Papilla
Most abundant in areas of high friction. EX: Palms.
A: Epidermis
B: Unicellular Mucus Goblet cell gland.
C: Scales
D: Chromatophores.
Trout
A: Scales
B: Chromatophores.
Class of Vertebrate?
Fish.
A: Epidermis
B&C: Dermis
D: Hypodermis.
Fish
Layers? Types of Tissue?
A: Papillary Dermal: Areolar/ Loost c.t.
B: Reticular Dermal: Dense Irregular c.t.
Papillary/ Spongiusum.
Reticular/ Compactum.
Placoid Scales.
Ctenoid Scale.
Type of Elasmoid Scale.
Ctenoid Scale.
Type of Elasmoid Scale.
Cycloid Scale.
Type of Elasmoid Scale.
Cycloid Scale.
Type of Elasmoid Scale.
Just Look.
Shark.
Scales attached at the dermis.
(Scales in chondrichthyes are derived from the dermis.)
mc: Mucus Cell
psc: Placoid Scale.
Layer of Dermis?
A: Papillary/ Spongiosum.
B: Reticular/ Compactum.
A: Areolar/ Loose c.t.
B: Dense Irregular c.t.
Meissner’s Corpuscle.
Sense Touch.
Pacinian Corpuscle.
Senses Vibrations.
Placoid Scales.
Unique to Chondrichthyes (Sharks & Rays.)
Meissner’s Corpuscle.
Pacinian Corpuscle.
Senses Vibrations.
