BIO 168 Exam - Tissues Questions and Answers With Verified Solutions 2025
a group of specialized cells and extracellular material around them. - ✔✔Tissues
microscopic study of tissues - ✔✔Histology
Lacks blood vessels (materials must move by diffusion from underlying Connective Tissue)
Covers body surface and forms glands
Very little extracellular matrix
Has distinct tissue surfaces (Free (apical), nasal, lateral
Cells connect to surrounding cells and extracellular matrix
High regeneration capacity - ✔✔Epithelial tissue characteristics
Connects basal later to underlying tissues.
Consists of two layers
Made of specialized extracellular material secreted by the epithelial cells (Collagen, Glycoproteins,
proteoglycans)
Supports and guides cells migration during tissue repair
Porous to allow movement of materials to and from the epithelial cells above. - ✔✔basement
membrane
protection, barrier, secretion, passage of substances, absorption - ✔✔Epithelial Tissue Functions
Squamous: flat, scare like
Cuboidal: equal in height and width
Columnar: taller than wide - ✔✔Classification of Epithelia Cells
single layer of flat cells
, Functions: Diffusion/filtration
Location: air sacs in lungs, lining of heart, blood and lymphatic vessels - ✔✔Simple squamous
single layer of cube shaped cells
Function: secretion/absorption
Location: Ducts and secretory portions of small glands, kidney tubules. - ✔✔simple cuboidal
Single layer of tall cells
Function: ciliated- moves particles, Smooth- absorbs and secretes mucous and enzymes.
Location: Bronchi, uterine tubes, uterus, digestive tract. - ✔✔simple columnar
Like columnar but irregular shaped.
Function: secretes and moves mucous (with cilia)
Location: Trachea, upper respiratory tract - ✔✔psudostratified columnar
multiple layers of flat cells
Function: protects agains abrasion, barrier agains infection.
Location: skin and it lines the esophagus, mouth, and vagina - ✔✔stratifed squamous
Multiple layers of cube like cells
Function: secretions/absorption
Location: sweat, salivary, and mammary glands. - ✔✔Stratifed cuboidal
Multiple layers of tall, thin cells
a group of specialized cells and extracellular material around them. - ✔✔Tissues
microscopic study of tissues - ✔✔Histology
Lacks blood vessels (materials must move by diffusion from underlying Connective Tissue)
Covers body surface and forms glands
Very little extracellular matrix
Has distinct tissue surfaces (Free (apical), nasal, lateral
Cells connect to surrounding cells and extracellular matrix
High regeneration capacity - ✔✔Epithelial tissue characteristics
Connects basal later to underlying tissues.
Consists of two layers
Made of specialized extracellular material secreted by the epithelial cells (Collagen, Glycoproteins,
proteoglycans)
Supports and guides cells migration during tissue repair
Porous to allow movement of materials to and from the epithelial cells above. - ✔✔basement
membrane
protection, barrier, secretion, passage of substances, absorption - ✔✔Epithelial Tissue Functions
Squamous: flat, scare like
Cuboidal: equal in height and width
Columnar: taller than wide - ✔✔Classification of Epithelia Cells
single layer of flat cells
, Functions: Diffusion/filtration
Location: air sacs in lungs, lining of heart, blood and lymphatic vessels - ✔✔Simple squamous
single layer of cube shaped cells
Function: secretion/absorption
Location: Ducts and secretory portions of small glands, kidney tubules. - ✔✔simple cuboidal
Single layer of tall cells
Function: ciliated- moves particles, Smooth- absorbs and secretes mucous and enzymes.
Location: Bronchi, uterine tubes, uterus, digestive tract. - ✔✔simple columnar
Like columnar but irregular shaped.
Function: secretes and moves mucous (with cilia)
Location: Trachea, upper respiratory tract - ✔✔psudostratified columnar
multiple layers of flat cells
Function: protects agains abrasion, barrier agains infection.
Location: skin and it lines the esophagus, mouth, and vagina - ✔✔stratifed squamous
Multiple layers of cube like cells
Function: secretions/absorption
Location: sweat, salivary, and mammary glands. - ✔✔Stratifed cuboidal
Multiple layers of tall, thin cells
