TCDHA HISTOLOGY MIDTERM
ACTUAL EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED
A+
◍ Lymphatic system.
Answer: part of the immune system, helps defend against disease- closely
relate w the cardiovascular system- transports excess tissue fluid to the
bloodstream
◍ salivary gland ducts.
Answer: intercalated ducts- striated ducts- excretory/secretory ducts
◍ Cell free zone/ zone of weil.
Answer: contain fewer cells than odontoblastic zone- nerve and capillary
plexus located here
◍ What are lymph nodes composed of?.
Answer: lymphocytes and macrophages
◍ minor salivary glands.
Answer: empty products directly into oral cavity by short ducts- labial,
buccal, palatine, lingual, von Ebner
◍ Supporting bone.
Answer: Compact bone (cribform plate) and cancellous bone (spongy,
trabecular bone)
◍ location of loose CT.
Answer: beneath skin (dermis)- between muscles
◍ Tight junctions (and a location).
, Answer: Closes intercellular space between cells by fusing cell membranes
together"water tight" - prevents movement of fluidLocation: lining of small
intestine
◍ Induction.
Answer: Action of one group of cells on another
◍ example of holocrine glands.
Answer: sebaceous glands
◍ Where is the location of the transitional epithelium?.
Answer: urinary bladder
◍ Capillary.
Answer: 59
◍ nervi vasorum.
Answer: 42
◍ What is the material makeup of mature dentin.
Answer: 70% inorganic - calcium hydroxyapatite (softer than enamel, more
porous - implications for debridement/caries/staining)- 20% organic- 10%
water
◍ binucleated cells.
Answer: cardiac muscle cells, parenchyma liver cells
◍ metaphase.
Answer: chromosomes arrange midway bw the centrioles- spindle fibres
from the centrioles become attached to the centromeres of each chromosome
◍ Gland.
Answer: Structure that produces a secretion to regulate body's normal
functioning
◍ Fenestration.
Answer: The area of bone loss where an apical root penetrates the cortical
bone, opening through the bone Window-like defect
, ◍ rows of hepatocytes.
Answer: 342
◍ enamel matrix does not contain?.
Answer: collagen
◍ Stratified Squamous KERATINIZED Epithelium.
Answer: Located on dry or wet surfaces. Has keratin.Has 5 layers
◍ Chromatin.
Answer: Contains chromosomes, form of DNA
◍ Perykimata.
Answer: external manifestation of lines off retzius. Areas on tooth where
groups of ameloblasts stopped functioning in cervical 2/3 of crown,
continuous around the tooth and parallel to CEJ.
◍ muscle tissue.
Answer: responsible for BODY MOVEMENT
◍ Medium Vein.
Answer: 76 What is this image as a whole?
◍ Soft palate mucosa.
Answer: Non- keratinizedLamina propria: high vascularizedSubmucosa
contains: muscles of the soft palate and mucous glands (minor salivary
glands)
◍ locations of stratified squamous non-keratinized.
Answer: buccal & alveolar mucosa- ventral (under) of tongue- floor of
mouth- sulcular epithelium- esophagus- cornea
◍ Subscapular Sinus.
Answer: 138
◍ What does the PDL contain?.
Answer: Blood vessels that supply nutrition to the surrounding tissue and
bone (alveolar process)Has nerves that allow us to feel even the most
delicate forces applied to the teeth (proprioceptive mechanism)
ACTUAL EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED
A+
◍ Lymphatic system.
Answer: part of the immune system, helps defend against disease- closely
relate w the cardiovascular system- transports excess tissue fluid to the
bloodstream
◍ salivary gland ducts.
Answer: intercalated ducts- striated ducts- excretory/secretory ducts
◍ Cell free zone/ zone of weil.
Answer: contain fewer cells than odontoblastic zone- nerve and capillary
plexus located here
◍ What are lymph nodes composed of?.
Answer: lymphocytes and macrophages
◍ minor salivary glands.
Answer: empty products directly into oral cavity by short ducts- labial,
buccal, palatine, lingual, von Ebner
◍ Supporting bone.
Answer: Compact bone (cribform plate) and cancellous bone (spongy,
trabecular bone)
◍ location of loose CT.
Answer: beneath skin (dermis)- between muscles
◍ Tight junctions (and a location).
, Answer: Closes intercellular space between cells by fusing cell membranes
together"water tight" - prevents movement of fluidLocation: lining of small
intestine
◍ Induction.
Answer: Action of one group of cells on another
◍ example of holocrine glands.
Answer: sebaceous glands
◍ Where is the location of the transitional epithelium?.
Answer: urinary bladder
◍ Capillary.
Answer: 59
◍ nervi vasorum.
Answer: 42
◍ What is the material makeup of mature dentin.
Answer: 70% inorganic - calcium hydroxyapatite (softer than enamel, more
porous - implications for debridement/caries/staining)- 20% organic- 10%
water
◍ binucleated cells.
Answer: cardiac muscle cells, parenchyma liver cells
◍ metaphase.
Answer: chromosomes arrange midway bw the centrioles- spindle fibres
from the centrioles become attached to the centromeres of each chromosome
◍ Gland.
Answer: Structure that produces a secretion to regulate body's normal
functioning
◍ Fenestration.
Answer: The area of bone loss where an apical root penetrates the cortical
bone, opening through the bone Window-like defect
, ◍ rows of hepatocytes.
Answer: 342
◍ enamel matrix does not contain?.
Answer: collagen
◍ Stratified Squamous KERATINIZED Epithelium.
Answer: Located on dry or wet surfaces. Has keratin.Has 5 layers
◍ Chromatin.
Answer: Contains chromosomes, form of DNA
◍ Perykimata.
Answer: external manifestation of lines off retzius. Areas on tooth where
groups of ameloblasts stopped functioning in cervical 2/3 of crown,
continuous around the tooth and parallel to CEJ.
◍ muscle tissue.
Answer: responsible for BODY MOVEMENT
◍ Medium Vein.
Answer: 76 What is this image as a whole?
◍ Soft palate mucosa.
Answer: Non- keratinizedLamina propria: high vascularizedSubmucosa
contains: muscles of the soft palate and mucous glands (minor salivary
glands)
◍ locations of stratified squamous non-keratinized.
Answer: buccal & alveolar mucosa- ventral (under) of tongue- floor of
mouth- sulcular epithelium- esophagus- cornea
◍ Subscapular Sinus.
Answer: 138
◍ What does the PDL contain?.
Answer: Blood vessels that supply nutrition to the surrounding tissue and
bone (alveolar process)Has nerves that allow us to feel even the most
delicate forces applied to the teeth (proprioceptive mechanism)
