UCF HUMAN PHYSIOLOGY LAB EXAM
1
2024 MOST RECENT UPDATE
[MOST TESTED QUESTIONS] COMPREHENSIVE
QUESTIONS AND VERIFIED ANSWERS GET IT
RIGHT GRADED A+
Homeostasis reflects the ability of the human body to
maintain a relatively constant internal environment regardless of the surrounding
enviromental changes
how is homeostasis maintained?
feedback control mechanisms
what happens when homeostasis is not achieved?
Disease
what is disease?
the lack of coherence among certain human biological process
what leads to the progression of disease?
when synergy is disrupted at any level
what are the components of the feedback control center?
sensor
intergrating center
effector
what are the 4 types of tissues?
epithelium
connective
muscle
nervous
,what is anatomy?
is the study structure and description of the body
what is physiology
is the study of biological functions and processes of the human body under basal
conditions.
what is homeostasis
refers to the dynamic constancy of the internal physiological envrioment while buffering
the challenges of the external enviroment
regulated variable
the specfic factor being monitored and controlled by the system.
sensor(receptor)
monitors the controlled variable for any deviations caused by a stimulus from the
external environment.
information transmitted to the integrating center along afferent pathways
integrating center(control center)
recieves and processes input information from the sensor
if necessary instructions to carry out an appropriate respnse are sent to the effect along
efferent pathways.
effector
recieves instructions from the integrating center and responds accordingly.
steps of the feedback control system
stimillus
receptor(sensory)
control center
effector
response
"susy really can't eat ragu"
negative feedback
the response of the control system is negative or opposing to the stimulus
regulation of blood pressure
the decrease in blood volume----->decrease in blood pressure---->detected by
baroreceptors in carotid ateries----->sent to brain------>vessels contrict heart rate
increases
negative feedback _______ homeostasis
supports
, what is the most common feedback mechanism?
negative feedback
positive feedback
the response of the control system in positive or promoting the stimulus.
act to amplify the initial response to the stimulus.
examples of positive feedback
childbirth
blood coagulation
inflammation response
Positive feedback _______ _______ __________ homestasis
does not support
positive feedback is ____ _______ in nature
less common
what stops positive feedback?
negative ffedback does once the process of positve feedback is complete
the plasmalemma is a doubled layer structure made primarily of
phospholipids
cholesterol
protien molecules
the plasmalemma has a ________(inner) and a _______(outer) face
cytoplasmic
extracellular
the cell membrane is ______ ________ which means it only allows certain
molecules to penetrate its membrane
selectively permeable
cholesterol helps with _______ and _______ of the plasma membrane
fluidity and permerability
how does cholesterol help with permeability?
why is this the case?
it keeps the phosphate heads at a good distance from each other.
This is because cholesterol is positioned between the lipid bilayer
how does cholesterol prevent dissociation of phosphate heads?
by absorbing thermal energy
how does cholesterol prevent phosphate heads from increasing their
intermolecular distance?
by keeping the cell membrane structure consistent.
what does cholesterol amphipathic properties allow it to do?
maintain the stability of the plasmalemma when exposed to certain temperatures.
gradient:
an increase or decrease in magnitude of a given property.
1
2024 MOST RECENT UPDATE
[MOST TESTED QUESTIONS] COMPREHENSIVE
QUESTIONS AND VERIFIED ANSWERS GET IT
RIGHT GRADED A+
Homeostasis reflects the ability of the human body to
maintain a relatively constant internal environment regardless of the surrounding
enviromental changes
how is homeostasis maintained?
feedback control mechanisms
what happens when homeostasis is not achieved?
Disease
what is disease?
the lack of coherence among certain human biological process
what leads to the progression of disease?
when synergy is disrupted at any level
what are the components of the feedback control center?
sensor
intergrating center
effector
what are the 4 types of tissues?
epithelium
connective
muscle
nervous
,what is anatomy?
is the study structure and description of the body
what is physiology
is the study of biological functions and processes of the human body under basal
conditions.
what is homeostasis
refers to the dynamic constancy of the internal physiological envrioment while buffering
the challenges of the external enviroment
regulated variable
the specfic factor being monitored and controlled by the system.
sensor(receptor)
monitors the controlled variable for any deviations caused by a stimulus from the
external environment.
information transmitted to the integrating center along afferent pathways
integrating center(control center)
recieves and processes input information from the sensor
if necessary instructions to carry out an appropriate respnse are sent to the effect along
efferent pathways.
effector
recieves instructions from the integrating center and responds accordingly.
steps of the feedback control system
stimillus
receptor(sensory)
control center
effector
response
"susy really can't eat ragu"
negative feedback
the response of the control system is negative or opposing to the stimulus
regulation of blood pressure
the decrease in blood volume----->decrease in blood pressure---->detected by
baroreceptors in carotid ateries----->sent to brain------>vessels contrict heart rate
increases
negative feedback _______ homeostasis
supports
, what is the most common feedback mechanism?
negative feedback
positive feedback
the response of the control system in positive or promoting the stimulus.
act to amplify the initial response to the stimulus.
examples of positive feedback
childbirth
blood coagulation
inflammation response
Positive feedback _______ _______ __________ homestasis
does not support
positive feedback is ____ _______ in nature
less common
what stops positive feedback?
negative ffedback does once the process of positve feedback is complete
the plasmalemma is a doubled layer structure made primarily of
phospholipids
cholesterol
protien molecules
the plasmalemma has a ________(inner) and a _______(outer) face
cytoplasmic
extracellular
the cell membrane is ______ ________ which means it only allows certain
molecules to penetrate its membrane
selectively permeable
cholesterol helps with _______ and _______ of the plasma membrane
fluidity and permerability
how does cholesterol help with permeability?
why is this the case?
it keeps the phosphate heads at a good distance from each other.
This is because cholesterol is positioned between the lipid bilayer
how does cholesterol prevent dissociation of phosphate heads?
by absorbing thermal energy
how does cholesterol prevent phosphate heads from increasing their
intermolecular distance?
by keeping the cell membrane structure consistent.
what does cholesterol amphipathic properties allow it to do?
maintain the stability of the plasmalemma when exposed to certain temperatures.
gradient:
an increase or decrease in magnitude of a given property.
