Bio 230 Exam 2026 Questions and
Answers
simple squamous epithelium - Correct answer-Look: single linings jig saw puzzle
like shape
Function; reduces friction; controls vessel permeability; performs absorption and
secretion
Location: air sacs of lungs, lining of heart, blood vessels, and lymphatic vessels;
lining of ventral body cavity
stratified squamous epithelium - Correct answer-Description: Thick membrane
composed of several cell layers;
in the keratinized type, the surface cells are full of keratin
Function: Protects underlying tissues in areas subjected to abrasion
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, Location: located where mechanical stresses are severe; surface of the skin lining
of the mouth, esophagus, anus and vagina it protects against physical and chemical
attacks
Keratinized epithelium:has keratin (protein filament) deposited on the surface
which makes it impermeable and dry. Examples of keratinized stratified squamous
epithelium include skin on the palm and soles of feet
simple cuboidal epithelium - Correct answer-Description: Single layer of hexagon
like boxes from their apical surface (sectional views it appears square) cells with
large, spherical central nuclei and the distance between adjacent nuclei are roughly
equal to the height of the epithelium
Function: provides limited protection and occurs where secretion and absorption
take place
Location: lines portion of the Kidney tubules; ducts and secretory portions of small
glands; ovary surface
stratified cuboidal epithelium - Correct answer-layered cuboidal
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Answers
simple squamous epithelium - Correct answer-Look: single linings jig saw puzzle
like shape
Function; reduces friction; controls vessel permeability; performs absorption and
secretion
Location: air sacs of lungs, lining of heart, blood vessels, and lymphatic vessels;
lining of ventral body cavity
stratified squamous epithelium - Correct answer-Description: Thick membrane
composed of several cell layers;
in the keratinized type, the surface cells are full of keratin
Function: Protects underlying tissues in areas subjected to abrasion
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, Location: located where mechanical stresses are severe; surface of the skin lining
of the mouth, esophagus, anus and vagina it protects against physical and chemical
attacks
Keratinized epithelium:has keratin (protein filament) deposited on the surface
which makes it impermeable and dry. Examples of keratinized stratified squamous
epithelium include skin on the palm and soles of feet
simple cuboidal epithelium - Correct answer-Description: Single layer of hexagon
like boxes from their apical surface (sectional views it appears square) cells with
large, spherical central nuclei and the distance between adjacent nuclei are roughly
equal to the height of the epithelium
Function: provides limited protection and occurs where secretion and absorption
take place
Location: lines portion of the Kidney tubules; ducts and secretory portions of small
glands; ovary surface
stratified cuboidal epithelium - Correct answer-layered cuboidal
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
