Mnemonics (Nbde Part 1) – Histology Exam Questions with Correct Answers| New Update
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Collagen: location of types Type 1: bONE (majority; bone)
Type 2: carTWOlage (cartilage)
Type 3: reTHREEcular fibers (fibers of reticular lamina in basement membranes; product of CT)
Type 4: "Four on the Floor" (primary material of basement membranes)
Type 7: anchoring fibrils of basement membrane (3+4=7; anchors basal lamina to reticular
lamina)
3 types of ducts in salivary gland 1. Intercalated duct: (think "international flights")
-transports saliva to larger ducts
-lined by simple cuboidal epithelium
2. Striated duct: (think of a PEZ dispenser)
-modifies salivary electrolytes (resorbs Na/Cl, secretes K/HCO3) (think of tiny PEZ candy)
-lined by simple low columnar epithelium (PEZ dispensers are column-like)
3. Terminal excretory duct: (self explanatory)
-transports saliva to oral cavity
-lined by pseudostratified columnar epithelium
Perichondrium locations "Perichondrium is not a FAN of these locations"
Fibrocartilage (ex. TMJ articular disc, intervertebral discs, etc.)
Articular cartilage of joints
Nasal/costal cartilage
, *Note perichondrium the surface of all other types of all other cartilage!
Elastic cartilage locations? All start with "E"
External ear, Eustachian tube, Epiglottis
*Hyaline (precursor to endochondral bone formation) = nose, trachea, bronchi, larynx, ribs,
articular surfaces, and long bones
*Fibrocartilage = intervertebral discs, TMJ articular disc, symphysis of pubis, meniscus of knee.
Cartilage growth types Appositional = on the surface of existing cartilage (think apical)
Interstitial = within existing cartilage (think inter) via "centers"
Bone growth types Intramembranous ossification: ("IntraMembranous involves IMmature
bone")
mesenchymal cells - osteoblasts - immature woven bone secretion (around collagen) -
osteoclast resorption - osteoblasts replace with mature bone - final calcification
Endochondral ossification: (think chondral for preliminary cartilage layer)
bony cuff around hyaline cartilage (grows to replace/kill chondrocytes) - calcification -
resorption of calcified cartilage - new osteoblastic matrix forms mature bone
Bone remodeling? "HHHow's the remodeling?"
-Howship's lacunae (Hollow resorption bays on bone surface)
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Collagen: location of types Type 1: bONE (majority; bone)
Type 2: carTWOlage (cartilage)
Type 3: reTHREEcular fibers (fibers of reticular lamina in basement membranes; product of CT)
Type 4: "Four on the Floor" (primary material of basement membranes)
Type 7: anchoring fibrils of basement membrane (3+4=7; anchors basal lamina to reticular
lamina)
3 types of ducts in salivary gland 1. Intercalated duct: (think "international flights")
-transports saliva to larger ducts
-lined by simple cuboidal epithelium
2. Striated duct: (think of a PEZ dispenser)
-modifies salivary electrolytes (resorbs Na/Cl, secretes K/HCO3) (think of tiny PEZ candy)
-lined by simple low columnar epithelium (PEZ dispensers are column-like)
3. Terminal excretory duct: (self explanatory)
-transports saliva to oral cavity
-lined by pseudostratified columnar epithelium
Perichondrium locations "Perichondrium is not a FAN of these locations"
Fibrocartilage (ex. TMJ articular disc, intervertebral discs, etc.)
Articular cartilage of joints
Nasal/costal cartilage
, *Note perichondrium the surface of all other types of all other cartilage!
Elastic cartilage locations? All start with "E"
External ear, Eustachian tube, Epiglottis
*Hyaline (precursor to endochondral bone formation) = nose, trachea, bronchi, larynx, ribs,
articular surfaces, and long bones
*Fibrocartilage = intervertebral discs, TMJ articular disc, symphysis of pubis, meniscus of knee.
Cartilage growth types Appositional = on the surface of existing cartilage (think apical)
Interstitial = within existing cartilage (think inter) via "centers"
Bone growth types Intramembranous ossification: ("IntraMembranous involves IMmature
bone")
mesenchymal cells - osteoblasts - immature woven bone secretion (around collagen) -
osteoclast resorption - osteoblasts replace with mature bone - final calcification
Endochondral ossification: (think chondral for preliminary cartilage layer)
bony cuff around hyaline cartilage (grows to replace/kill chondrocytes) - calcification -
resorption of calcified cartilage - new osteoblastic matrix forms mature bone
Bone remodeling? "HHHow's the remodeling?"
-Howship's lacunae (Hollow resorption bays on bone surface)
