Lecture 6 - Epithelial Glands Flashcards
What is the major diagnostic characteristic of compound glands?
A. Serous secretion
B. Alveolar secretory units
C. Branched excretory duct
D. More than one excretory duct
C. Branched excretory duct
Sebaceous glands are typically classified as which of the following types?
A. Serous
B. Holocrine
C. Mucous
D. Merocrine
B. Holocrine
Exocrine or Endocrine:
Epithelial outgrowths into underlying connective tissue
that retain their connection to the overlying epithelium in
the form of one or more ducts.
Exocrine
Exocrine or Endocrine:
• Epithelial outgrowths into underlying connective tissue
that lose their connection to the overlying epithelium.
• These glands lack ducts and must secrete their product
(hormone) directly into surrounding blood vessels.
Endocrine
Paracrine refers to..
Secretion affects neighboring cells
Autocrine refers to:
Secretion affects cell that released the secretory product
Example of a unicellular gland?
goblet cell
Which classification has ductal branching?
Simple or Compound?
Compound
Which form ducts, Exocrine or Endocrine glands?
Exocrine.
Endocrine products are typically called what?
Hormones
Which of the following splits into two or more branches and has no excretory ducts?
A. Simple Tubular gland
B. Simple Coiled Tubular gland
C. Simple tubular branched gland
D. Simple acinar or alveolar gland
C. Simple tubular branched gland
A. no excretory ducts or with short duct. Opens directly onto surface
B. Long excretory duct, coiled secretory portion (very long, like sweat glands)
C. short excretory duct is present in glands of the tongue and esophagus
SIMPLE STILL BECAUSE ONLY gland portion branches
COMPOUND - duct has to branch
D. Terminal secretory portion is divited by partitions into sacs
An example of an autocrine cell would be?
osteoblasts (bone forming cells)
1:09:15 lecture
which of the following IS NOT a shape of secretory portion:
A. Tubular
B. Acinar
C. Tubulo-alveolar (-acinar)
D. Compound-alveolar (-acinar)
D. Compound-alveolar (-acinar)
Which is smaller, lobule or lobe?
lobule
What are the branches off a capsule called?
Septa or trabeculae
What is the name of the duct that drains a lobule?
Intralobular duct
What are the 3 types of secretion?
Serous (merocrine or eccrine)
Mucous
Mixed (serous-mucous)
During this mechanism of secretion, No part of the secretory cell is lost (MOST COMMON)
Merocrine (eccrine)
During this mechanism of secretion, Apical cytoplasm is lost
Apocrine (axillary sweat glands, mammary glands - lipid component of milk)
During this mechanism of secretion, the entire cell is lost
Holocrine (ex. sebaceous glands [found with hair follacles])
A columnar -> stratified columnar epithelium transition would most likely be associated with which of the following duct levels?
A. Intercalated
B. Striated
C. Intralobular
D. Intralobar
D. Intralobar
Bicarbonate/chloride exchange is associated with which of the following levels of ducts?
A. Intercalated
B. Striated
C. Interlobar
D. Intralobar
A. Intercalated
What type of cells:
- Lie inside basement membrane
- Cap secretory sinus
- Are of epithelial origin with extensive actin bundles (contractility)
Myoepithelial cells
T/F: The Acinus is the secretory part of the gland, enclosed within the basement membrane
True
Order from biggest to smallest:
Lobes, Capsule, Lobules
Capsule, Lobes, Lobules
Intralobular is associated with:
A. cuboidal to columnar epithelium with basal striations
B. Squamous to low cuboidal epithelium
C. Pseudostratified columnar epithelium
D. A and B
E. All of the Above
D. A and B
A - Intercalated duct (squamous to low cuboidal epithelium)
(bicarb secreted)where bicarb/cl exchange takes place, SIMPLEST
B - Striated duct (cuboidal → columnar epithelium w/ basal striatons
striated b/c basal domains have striations which accumulate mitochondria for active transport
Order from biggest to smallest and state the type of tissue associated with each:
Lobar duct
Interlobular duct
Intralobar duct
Main duct THEN ->
Lobar duct- Stratified columnar epithelium
Intralobar - Columnar to stratified columnar epithelium
Interlobular- Pseudostratified columnar epithelium
What type of tissue is associated with each?
Intercalated duct
Striated duct
Intralobular duct
Interlobular duct
Interlobar duct
Lobar duct
Intercalated duct - low cuboidal epithelium (THINK BICARB EXCHANGE)
Striated duct - cuboidal to columnar epithelium (THINK MITOCHONDRIA)
Intralobular duct - cuboidal to columnar epithelium
Interlobular duct - pseudostratified columnar epithelium
Intralobar duct - Columnar to stratified columnar epithelium
Lobar duct - stratified columnar epithelium
A. Interlobular duct
B. Intralobular duct
A. Lobar duct
A. Lobar duct
A. Interlobular duct
A. Nucleus of myoepithelial cell
B. Mucous acinus
C. Lumen of acinus
