TCDHA HISTOLOGY UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
COMPREHENSIVE STUDY GUIDE FULL
SOLUTION
●● Endocrine glands:
Answer: glands that secrete chemicals called hormones directly into the
bloodstream
●● Exocrine glands have 4 characteristics;
Answer: 1. Duct system
2. Shape of secretory unit
3. Mode of Secretions
4. Nature of secretion
●● Serous Secretions are
Answer: Clear, watery, with protein. Contains digestive enzyme
Amylase
●● Mucous Secretions are
Answer: cloudy, mucin (glycoproteins) with water
,●● Unicellular Secretory Unit
Answer: Goblet Cells
●● Multicellular secretory unit
Answer: Tubular, alveolar/acinus
●● Merocrine Glands
Answer: secrete product through free surface, no loss of cytoplasm/cell
(salivary glands, pancreas)
●● Apocrine Glands
Answer: Secrete small amounts of cytoplasm/cell with secretory
product.
Apical portion pinches off + detaches.
Ex. Mammary glands
●● Holocrine Glands
Answer: entire cells are discharged as secretion (sebaceous glands)
●● Acinus/Acini
Answer: Consists of single layer cuboidal epithelial cells surrounding a
lumen(central opening) where the saliva is deposited after being
produced by secretory cells
, Located at terminal part of gland
●● Intercalated duct
Answer: Duct associated with acinus or terminal part of salivary gland.
●● Parotid Gland
Answer: Largest (Stensons Duct)
Duct system consists of LONG intercalated ducts and SHORT striated
ducts with basal striations.
Serous secretion
25% salivary volume
●● Mumps
Answer: viral infection of the parotid gland
●● Submandibular Salivary Gland
Answer: Medium, capsulated gland
QUESTIONS AND CORRECT ANSWERS
COMPREHENSIVE STUDY GUIDE FULL
SOLUTION
●● Endocrine glands:
Answer: glands that secrete chemicals called hormones directly into the
bloodstream
●● Exocrine glands have 4 characteristics;
Answer: 1. Duct system
2. Shape of secretory unit
3. Mode of Secretions
4. Nature of secretion
●● Serous Secretions are
Answer: Clear, watery, with protein. Contains digestive enzyme
Amylase
●● Mucous Secretions are
Answer: cloudy, mucin (glycoproteins) with water
,●● Unicellular Secretory Unit
Answer: Goblet Cells
●● Multicellular secretory unit
Answer: Tubular, alveolar/acinus
●● Merocrine Glands
Answer: secrete product through free surface, no loss of cytoplasm/cell
(salivary glands, pancreas)
●● Apocrine Glands
Answer: Secrete small amounts of cytoplasm/cell with secretory
product.
Apical portion pinches off + detaches.
Ex. Mammary glands
●● Holocrine Glands
Answer: entire cells are discharged as secretion (sebaceous glands)
●● Acinus/Acini
Answer: Consists of single layer cuboidal epithelial cells surrounding a
lumen(central opening) where the saliva is deposited after being
produced by secretory cells
, Located at terminal part of gland
●● Intercalated duct
Answer: Duct associated with acinus or terminal part of salivary gland.
●● Parotid Gland
Answer: Largest (Stensons Duct)
Duct system consists of LONG intercalated ducts and SHORT striated
ducts with basal striations.
Serous secretion
25% salivary volume
●● Mumps
Answer: viral infection of the parotid gland
●● Submandibular Salivary Gland
Answer: Medium, capsulated gland
