BIOS256 COMPREHENSIVE EXAM
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QUESTIONS & DETAILED
EXPLANATIONS GRADED A+
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Homeostasis - Answer: Ability to maintain a relatively stable
and constant internal environment
What can happen as a result of homeostasis disruption? -
Answer: disease or death
Negative feedback (most common) - Answer: Response reduces
or shuts off original stimulus, change is in opposite direction of
initial change
Examples of negative feedback - Answer: body temperature,
blood pressure, body fluid regulation
Thermoregulation - Answer: a negative feedback mechanism
that maintains proper body temperature
,What is positive feedback? - Answer: The response of the
effector further increases the change caused by the stimulus.
How does positive feedback affect the body's response? -
Answer: It causes the body to move further away from
homeostasis.
examples of positive feedback - Answer: childbirth and blood
clotting
4 tissue types - Answer: epithelial, connective, muscular,
nervous
epithelial tissue - Answer: Tissue that covers outside of the
body and lines organs and cavities.
Characteristics of epithelial tissue - Answer: arranged in sheets
densely packed cells
many cell junctions
mitosis occurs frequently
,What are epithelial cells attached to? - Answer: basement
membrane
Is epithelial vascular or avascular? - Answer: avascular, but
contains nerve supply
Examples of structures composed of epithelial tissue - Answer:
skin, lungs, stomach, intestines, blood vessels
What does epithelial tissue form? - Answer: glands
glands - Answer: structures that produce secretions
apical (free) surface - Answer: name section of epithelial tissue
in pink
basal side - Answer: name section of epithelial tissue
lateral surfaces of epithelium - Answer: identify section B of
epithelium
, basal lamina - Answer: thin extracellular layer that lies
underneath epithelial cells and separates them from other
tissues (structure in pink)
reticular lamina - Answer: identify #5
Connective tissue epithelium - Answer: identify second
structure down on the right side
Why is epithelium polar? - Answer: allows epithelial cells to
transport molecules across the surface in a directional manner
Types of protein fibers in connective tissue - Answer: collagen
fibers, reticular fibers, elastic fibers
Collagen fibers - Answer: provides flexibility and strength
reticular fibers - Answer: form a tightly woven fabric that joins
connective tissue to adjacent tissues.
Functions of epithelial tissue - Answer: protection, permeability,
LATEST UPDATE VERIFIED
QUESTIONS & DETAILED
EXPLANATIONS GRADED A+
Professional Academic Assistance Services
Homeostasis - Answer: Ability to maintain a relatively stable
and constant internal environment
What can happen as a result of homeostasis disruption? -
Answer: disease or death
Negative feedback (most common) - Answer: Response reduces
or shuts off original stimulus, change is in opposite direction of
initial change
Examples of negative feedback - Answer: body temperature,
blood pressure, body fluid regulation
Thermoregulation - Answer: a negative feedback mechanism
that maintains proper body temperature
,What is positive feedback? - Answer: The response of the
effector further increases the change caused by the stimulus.
How does positive feedback affect the body's response? -
Answer: It causes the body to move further away from
homeostasis.
examples of positive feedback - Answer: childbirth and blood
clotting
4 tissue types - Answer: epithelial, connective, muscular,
nervous
epithelial tissue - Answer: Tissue that covers outside of the
body and lines organs and cavities.
Characteristics of epithelial tissue - Answer: arranged in sheets
densely packed cells
many cell junctions
mitosis occurs frequently
,What are epithelial cells attached to? - Answer: basement
membrane
Is epithelial vascular or avascular? - Answer: avascular, but
contains nerve supply
Examples of structures composed of epithelial tissue - Answer:
skin, lungs, stomach, intestines, blood vessels
What does epithelial tissue form? - Answer: glands
glands - Answer: structures that produce secretions
apical (free) surface - Answer: name section of epithelial tissue
in pink
basal side - Answer: name section of epithelial tissue
lateral surfaces of epithelium - Answer: identify section B of
epithelium
, basal lamina - Answer: thin extracellular layer that lies
underneath epithelial cells and separates them from other
tissues (structure in pink)
reticular lamina - Answer: identify #5
Connective tissue epithelium - Answer: identify second
structure down on the right side
Why is epithelium polar? - Answer: allows epithelial cells to
transport molecules across the surface in a directional manner
Types of protein fibers in connective tissue - Answer: collagen
fibers, reticular fibers, elastic fibers
Collagen fibers - Answer: provides flexibility and strength
reticular fibers - Answer: form a tightly woven fabric that joins
connective tissue to adjacent tissues.
Functions of epithelial tissue - Answer: protection, permeability,
