ASU JP Hyatt: BIO 201 Exam 2 UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Are individualized body cells specialized? - CORRECT ANSWER - Yes, each type
performs specific functions that maintain homeostasis by working individually and in concert
with the other tissues.
Tissues - CORRECT ANSWER - Groups of cells similar in structure that perform a
common or related function
Organs - CORRECT ANSWER - Groups of tissues that work together to perform a
systemic function
Histology - CORRECT ANSWER - study of tissues (4 types)
What does nervous tissue do and what does it consist of? - CORRECT ANSWER -
Internal communication in the body, brain, spinal cord, and nerves
What does muscle tissue do and what does it consist of? - CORRECT ANSWER - It
contracts to cause movement,
Muscles attached to bones(skeletal)
Muscles of heart (cardiac)
Muscles of walls of hollow organs (smooth)
What does epithelial tissue do and what does it consist of? - CORRECT ANSWER - It
forms boundaries between different environments, protects, secretes, absorbs, and filters
Lining of digestive tract organs and other hollow organs
Skin surface (epidermis)
,What does connective tissue do and what does it consist of? - CORRECT ANSWER -
Supports, protects, binds other tissues together
Bones
Tendons
Fat and other soft padding tissue
What must a tissue be to be viewed under a microscope? - CORRECT ANSWER - It must
be acquired (post mortem), fixed (preserved with solvent), sectioned (cut into slices thin enough
to transmit light/electrons), stained (to enhance contrast), and you must have experience.
What does light microscopy use? - CORRECT ANSWER - colored dyes
What does electron microscopy use? - CORRECT ANSWER - Heavy metal coatings
What are the 4 primary tissues? - CORRECT ANSWER - Epithelial, Connective, Muscle,
and Nervous tissue
How do the 4 tissues differ? - CORRECT ANSWER - Types and functions of their cells
The characteristics of the matrix outside the cells
The relative amount of space occupied by their respective cells vs. matrix
What do cells depend on? - CORRECT ANSWER - The tissue type
What is the matrix (extracellular material) composed of? - CORRECT ANSWER - a.
Fibrous/ filamentous proteins
b. ground substance- a Clear gel known as tissue fluid, extracellular fluid, interstitial fluid, or
tissue gel
What are the 5 distinguishing characteristics of epithelial tissue? - CORRECT ANSWER -
Polarity: apical vs. basal surface
,Specialized contacts: tight junctions, desmosomes
Supported by connective tissues: Epithelial cell > Basal lamina > reticular lamina
Avascular, but innervated
Regeneration
How many names do all epithelial tissues have? - CORRECT ANSWER - Two
What does the first name indicate? - CORRECT ANSWER - The first name indicates the
number of cell layers
For example, simple epithelia are a single thick layer where stratified epithelia are two or more
layers thick
What does the second name indicate? - CORRECT ANSWER - It indicates the shapes of
cells
Different Types of Cell Shapes - CORRECT ANSWER - Squamous: flattened and scale-
like
Cuboidal: box-like, cube
Columnar: tall, column-like
What layer is the cell named after? - CORRECT ANSWER - The shape in its apical layer
Simple Epithelia - CORRECT ANSWER - Involved in absorption, secretion, or filtration
processes
Stratified Epithelial - CORRECT ANSWER - New cells regenerate from below
The basal cells divide and migrate towards surface
More durable than simple epithelia because protection is the major role
, What does simple squamous epithelium look like? - CORRECT ANSWER - Single layer
of flattened cells with disc-shaped central nuclei and sparse cytoplasm; the simplest of epithelia
What is the function simple squamous epithelium? - CORRECT ANSWER - It allows
materials to pass by diffusion and filtration in sites where protection is not important; secretes
lubricating substances in serosae.
Where can simple squamous epithelium be found? - CORRECT ANSWER - In the kidney
glomeruli, air sacs of lungs; lining of heart, blood vessels, and lymphatic vessels; lining of
ventral body cavity (serosae)
What's at the Cross section of capillary? - CORRECT ANSWER - (smallest blood vessel)
What's at the cross section of an artery? - CORRECT ANSWER - 2nd largest blood vessel
What does the simple cuboidal epithelium? - CORRECT ANSWER - a single layer of
cube-like cells with large spherical central nuclei
What is the function of simple cuboidal epithelium? - CORRECT ANSWER - Secretion
and absorption
Where is the simple cuboidal epithelium located? - CORRECT ANSWER - In the kidney
tubules; ducts and secretory portions of small glands; ovary surface
What does simple columnar epithelium look like? - CORRECT ANSWER - Single layer
of tall cells with round to oval nuclei; many cells bear microvilli, some bear cilia; layer may
contain mucus- secreting unicellular glands (goblet cells(
What is the function of simple columnar epithelium? - CORRECT ANSWER -
Absorption; secretion of mucus, enzymes, and other substances; ciliated type propels mucus (or
reproductive cells) by ciliary action
ACTUAL Exam Questions and CORRECT
Answers
Are individualized body cells specialized? - CORRECT ANSWER - Yes, each type
performs specific functions that maintain homeostasis by working individually and in concert
with the other tissues.
Tissues - CORRECT ANSWER - Groups of cells similar in structure that perform a
common or related function
Organs - CORRECT ANSWER - Groups of tissues that work together to perform a
systemic function
Histology - CORRECT ANSWER - study of tissues (4 types)
What does nervous tissue do and what does it consist of? - CORRECT ANSWER -
Internal communication in the body, brain, spinal cord, and nerves
What does muscle tissue do and what does it consist of? - CORRECT ANSWER - It
contracts to cause movement,
Muscles attached to bones(skeletal)
Muscles of heart (cardiac)
Muscles of walls of hollow organs (smooth)
What does epithelial tissue do and what does it consist of? - CORRECT ANSWER - It
forms boundaries between different environments, protects, secretes, absorbs, and filters
Lining of digestive tract organs and other hollow organs
Skin surface (epidermis)
,What does connective tissue do and what does it consist of? - CORRECT ANSWER -
Supports, protects, binds other tissues together
Bones
Tendons
Fat and other soft padding tissue
What must a tissue be to be viewed under a microscope? - CORRECT ANSWER - It must
be acquired (post mortem), fixed (preserved with solvent), sectioned (cut into slices thin enough
to transmit light/electrons), stained (to enhance contrast), and you must have experience.
What does light microscopy use? - CORRECT ANSWER - colored dyes
What does electron microscopy use? - CORRECT ANSWER - Heavy metal coatings
What are the 4 primary tissues? - CORRECT ANSWER - Epithelial, Connective, Muscle,
and Nervous tissue
How do the 4 tissues differ? - CORRECT ANSWER - Types and functions of their cells
The characteristics of the matrix outside the cells
The relative amount of space occupied by their respective cells vs. matrix
What do cells depend on? - CORRECT ANSWER - The tissue type
What is the matrix (extracellular material) composed of? - CORRECT ANSWER - a.
Fibrous/ filamentous proteins
b. ground substance- a Clear gel known as tissue fluid, extracellular fluid, interstitial fluid, or
tissue gel
What are the 5 distinguishing characteristics of epithelial tissue? - CORRECT ANSWER -
Polarity: apical vs. basal surface
,Specialized contacts: tight junctions, desmosomes
Supported by connective tissues: Epithelial cell > Basal lamina > reticular lamina
Avascular, but innervated
Regeneration
How many names do all epithelial tissues have? - CORRECT ANSWER - Two
What does the first name indicate? - CORRECT ANSWER - The first name indicates the
number of cell layers
For example, simple epithelia are a single thick layer where stratified epithelia are two or more
layers thick
What does the second name indicate? - CORRECT ANSWER - It indicates the shapes of
cells
Different Types of Cell Shapes - CORRECT ANSWER - Squamous: flattened and scale-
like
Cuboidal: box-like, cube
Columnar: tall, column-like
What layer is the cell named after? - CORRECT ANSWER - The shape in its apical layer
Simple Epithelia - CORRECT ANSWER - Involved in absorption, secretion, or filtration
processes
Stratified Epithelial - CORRECT ANSWER - New cells regenerate from below
The basal cells divide and migrate towards surface
More durable than simple epithelia because protection is the major role
, What does simple squamous epithelium look like? - CORRECT ANSWER - Single layer
of flattened cells with disc-shaped central nuclei and sparse cytoplasm; the simplest of epithelia
What is the function simple squamous epithelium? - CORRECT ANSWER - It allows
materials to pass by diffusion and filtration in sites where protection is not important; secretes
lubricating substances in serosae.
Where can simple squamous epithelium be found? - CORRECT ANSWER - In the kidney
glomeruli, air sacs of lungs; lining of heart, blood vessels, and lymphatic vessels; lining of
ventral body cavity (serosae)
What's at the Cross section of capillary? - CORRECT ANSWER - (smallest blood vessel)
What's at the cross section of an artery? - CORRECT ANSWER - 2nd largest blood vessel
What does the simple cuboidal epithelium? - CORRECT ANSWER - a single layer of
cube-like cells with large spherical central nuclei
What is the function of simple cuboidal epithelium? - CORRECT ANSWER - Secretion
and absorption
Where is the simple cuboidal epithelium located? - CORRECT ANSWER - In the kidney
tubules; ducts and secretory portions of small glands; ovary surface
What does simple columnar epithelium look like? - CORRECT ANSWER - Single layer
of tall cells with round to oval nuclei; many cells bear microvilli, some bear cilia; layer may
contain mucus- secreting unicellular glands (goblet cells(
What is the function of simple columnar epithelium? - CORRECT ANSWER -
Absorption; secretion of mucus, enzymes, and other substances; ciliated type propels mucus (or
reproductive cells) by ciliary action
