Lab 3 Flashcards
Where are nuclei found in goblet cells?
At the base
What is the epithelial classification of sebaceous glands?
Simple alveolar gland
What type of secretion do sebaceous glands utilize?
Holocrine secretion
Where are the nuclei of the cells of sebaceous glands?
Centrally located
Why is characterisitc of the cytoplasm of sebaceous gland cells? What brings this about?
Clear, due to high lipid content
What can you see in cross section of coiled glands?
Both secretory part, and ductal part
How do the secretory and ductal parts of SWEAT glands stain?
Secretory is light, ductal is dark (note that this is the OPPOSITE as usual)
What type of epithelium comprises the ducts of sweat glands?
Stratified cuboidal
Multicellular sheet in the stomach secrete what?
Mucus
What type of epithelium comprises multicellular sheets?
Simple columnar
What type of cells are beneath the multicellular sheets?
Branched tubular glands
What is the classification of the duodenal glands?
Simple branched tubular
What is the classification of the intestinal glands?
Simple tubular
What type of cells are found in the parotid gland?
Compound acinar glands
What are acini?
Secretory units within an acinar gland
Each cell within a acini is called what?
Acinar cells
What type of secretions do the acinar cells of the parotid gland produce?
watery serous secretions
Multiple acini together form what?
A lobule
What are the ducts that pierce through acinar lobules?
Intralobular ducts
What are the ducts that are found between acinar lobules?
Interlobule duct
What will you see around an intralobular duct? Interlobuler?
Intralobular -acinar cells
Interlobular - CT
Striated ducts within the parotid glands are of what type: inter or intraloular?
Intralobular
What causes the acidophilic striations in the intralobular striated ducts? What do these cause?
Mitochondria
Nuclei are pushed to the apical domain (toward duct)
What type of gland is the submandibular gland? Why?
mixed, there are both serous cells and mucus cells
How do mucus cells appear in the submandibular gland?
Lightly stained, with nuclei in the basal domain
How do serous cells appear in the submandibular gland?
Darkly stained, acidophilic
Which are found in greater numbers within the submandibular gland: serous cells or mucus cells?
Serous cells
What are serous demilunes? What are they produced by?
“Caps” produced by serous cells over the mucus cells. Found in submandibular glands. THESE ARE ARTIFACTS of tissue processing.
What is the classification of the sublingular gland? How is it different from the submandibular gland?
It is a compound tubulo alveolar gland, but has mucus cells predominating
What type of ducts are found in the sublingual gland?
Intralobular striated duct
What type of gland is the pancreas?
Compound acinar gland
Intercalated ducts are of what type?
Intralobular
What are centroacinar cells?
Cells that make up the intraacinar segment of the intercalated duct
What does the reticular layer of the dermis contain?
Dense irregular CT and elastic fibers
How many layers of cells are in the stratum basale?
Single
How many layers of cells are in the stratum spinosum?
Several
What is the basophilic chemical in the statum granulosum?
Keratohyaline
How many layers of cells are in the stratum granulosum?
Few
Where in the skin are Meissner’s corpusles seen?
Papillary part of the dermis
What is the classification of sebaceous glands?
Simple alveolar gland
What type of exocrine gland cell has avaculated cytoplasm?
Sebaceous cells
Do all hair follice have sebaceous glands? Is the reverse true?
All hair follice have sebaceous glands, but the reverse is not true
What is released when the erector pilli muscle contract?
sebaceous secretions
What does the pacinian corpulse look like? What is its function? Where are these located?
cut onion
Mechanoreceptor
Dermis
What do Meissner’s corpuscles look like?
Swirly thingy
What are the histologic features of a hair follicle? (in order)
Hair cortex
Internal root sheath
External root sheath
Glassy membrane
What is external to the glassy membrane of hair follices?
CT
Looking at a Neutrophil sample from a pt, you see a Dohle body inclusion. Lab tests shows leukocytosis with a L shift. What does this pt likely have?
Bacterial sepsis
How big is the nucles in lymphocytes?
HUGE-like the whole thing
How do neutrophils appear at the LM level?
many (3-5) lobed nucleaus
What do platelets look like at the LM level?
Blob smaller than RBCs
What do the secondary granules of neutrophis stain?
Pink
How do monocytes appear at the LM level?
- Large
- a kidney to horseshoe shaped nucleus
- a blue-gray cytoplasm
- irregular plasmalemma
How do Basophils appear at the LM level?
Bilobed nucleus usually obscure by coarse secondary granule
How do eosinophils appear at the light level?
Bilobed nucleus
secondary, acidophilic granules present
Why is the lymph node cortex darker than the medulla?
Filled with lymphocytes, which have predominant, basophilic nuclei
What is the order of lymphocytes in lymph nodes, from cortex to medulla?
Cortex = B Paracortex = T Medulla = B + plasmsa
