Comprehensive Exam Study Guide on BIOL 251-
Anatomy and Physiology Exam 1 EXAM, MOST
TESTED QUESTIONS AND VERIFIED
SOLUTIONS/GET IT 100% ACCURATE!! Latest
Updated 2026/2027.
Anatomy - ansthe various structures of the body, what they look like, and their relationship to
one another
Gross Anatomy - ansstructures visible to the naked eye
Regional Anatomy - ansspecific regions of the body such as the head or chest
can find organs from different systems in the same region
systemic anatomy - ansstudies the anatomy of each functional body system
systems span across multiple regions
Microscopic Anatomy - ansdeals with structures too small to be seen with the naked eye
Cytology - ansstudy of cells
Histology - ansstudy of tissues
physiology - anshow these individual body parts work (or function) on a normal level
principle of complementarity of structure and function - answhat a structure can do is
dependent on its form
bones are hard and hold up most of our body weight
chemical level of organization - ansatoms and molecules
cellular level of organization - anssmallest living unit of the body
cells function differently depending on where they are found
tissue level of organization - anscollections of 2 or more cells that carry out a similar function
Four Basic Types of Tissue - ansepithelial, connective, muscle, nervous
organ - ansany structure with two or more tissue types
Organ level of organization - anstissues operate together to perform a certain function
Organ System Level of organiztion - ansmultiple organs work together to accomplish a
purpose
Organismal Level of Organization - ansAll organ systems working together to keep the
organism alive
Necessary Life Function #1 - Maintaining Boundaries - anscell level --> cell membranes keep
organelles together and separate intercellular and extracellular fluid
organismal level --> skin holds us together, prevents water loss, and helps prevent the
entrance of pathogens
Necessary Life Function #2- Movement - ansCooperation of skeletal and muscular systems to
coordinate actions
Necessary Life Function #3- Responsiveness (or Excitability) - ansSensing environmental
changes and responding to them
Are all cells responsive? - ansyes to a certain extent, but CNS cells are the most responsive
Necessary Life Function #4- Digestion - ansFood is broken down to simple molecules to be
absorbed to blood and delivered to various tissues
Necessary Life Function #5- Metabolism - ansCatabolism, Anabolism, and Cellular
Respiration
,Comprehensive Exam Study Guide on BIOL 251-
Anatomy and Physiology Exam 1 EXAM, MOST
TESTED QUESTIONS AND VERIFIED
SOLUTIONS/GET IT 100% ACCURATE!! Latest
Updated 2026/2027.
Catabolism - ansbreaking down
anabolism - ansbuilding up
cellular respiration - ansATP Production through glucose and oxygen
Necessary Life Function #6- Excretion - ansRemoval of Waste produced during digestive and
metabolic functions
ex- Digestive waste, urine, respiratory release of CO2
Necessary Life Function #7- Reproduction - ansCell Level --> cells must divide for organism
to survive
Organismal level --> Production of offspring
Necessary Life Function #8- Growth - ansIncrease in the number of body cells, or increase in
size of individual cells themselves
anabolic rate must be greater than catabolic rate
Survival Need 1- Nutrients - ansBrought into the body by ingestion
include carbs, fats, proteins, vitamins and minerals
Survival Need 2- Oxygen - anscells can only survive a few minutes without oxygen
Survival Need 3- Water - ansPrimary solvent in the body, provides environment for chemical
reactions and serves as fluid base for secretions and excretion
Survival Need 4 - Endothermy - ansbody temperature must be maintained for chemic
processes to occur (98.6)
Survival Need 5- Atmospheric Pressure - ansbreathing and gas exchange occur at an
appropriate atmospheric pressure
Homeostasis - ansmaintenance of the internal condition of the body despite a constantly
changing external environment
Variable definition within homeostasis - answhat is being controlled or regulated
Receptor definition within homeostasis - ansreceives info about a specific variable, produces
a message to send to the control center
Control Center - Homeostasis - ansinterprets message, sends message about solution to the
effector
Effector definiton- Homeostasis - ansstructure or organ that makes the change in order to
resolve back to homeostasis
Negative feed back mechanism - ansCause the variable to change in a direction that is
opposite of the initial change to prevent severe changes in the body
ex- thermoregulation with shivering and sweating
Positive feedback mechanism - anscause the original change of the variable to be enhanced
- Extreme Change!!
ex- Clotting, and oxytocin release during labor
Imbalance in homeostasis - ansaging often leads to homeostatic imbalance
, Comprehensive Exam Study Guide on BIOL 251-
Anatomy and Physiology Exam 1 EXAM, MOST
TESTED QUESTIONS AND VERIFIED
SOLUTIONS/GET IT 100% ACCURATE!! Latest
Updated 2026/2027.
control systems become less efficient, making us more susceptible to disease
oral and digestive cavities - ansmouth and cavities of the digestive organs
OPEN TO EXTERNAL ENVI
Nasal cavity - answithin and posterior to nose, part of the respiratory passageway
OPEN TO EXTErNAL ENVI
orbital cavity - ansorbitals of the skill, kinda open
Middle Ear Cavity - anscontains bones (ossicles) that transmit sound vibrations
closed off
Synovial Cavities - ansAre joint cavities, enclosed within the fibrous capsules that surround
freely movable joints of the body i.e. elbow and knee joints.
closed off
Colloids - ansheterogeneous mixtures composed of large solute particles that DO NOT settle
out
sol-gel transformations - ansto change reversibly from a fluid (sol) state to a more solid (gel)
state (and back again
example of sol-gel transformation in the body - anscytosol of cells changes depending on
certain cell activities (cell division, change in shape, etc.)
suspensions - ansheterogeneous mixture composed of large solute particles that DO settle out
example of suspension in the body - ansblood contains a fluid portion called plasma with
various cell types suspended in it (RBC, WBC, Platelets)
Ionic Bond - anstransfer of electrons from one atom to another
anions - ansaccept the electron and become negatively charged
cations - ansdonate the electron and become positively charged
Covalent Bonds - ansatoms share some electrons in a common orbital
nonpolar moelcule - ansatoms in a covalent bond share electron equally and are electrically
balanced with no poles
polar molecules - ansone atom is an "electron hog" and creates poles
hydrogen bonds - answhen a bonded hydrogen is pulled by another electron hungry atom
why does water form droplets - anssurface tension from the oxygens pulling on the hydrogen
in other water molecules
hydrogen bonding and proteins - anshydrogen bonds hold proteins together which is
important since structure determines function
synthesis reaction - ansformation of bonds between atoms or molecules to form larger, more
complex structures
ENDERGONIC
ex- anabolic rxn
Anatomy and Physiology Exam 1 EXAM, MOST
TESTED QUESTIONS AND VERIFIED
SOLUTIONS/GET IT 100% ACCURATE!! Latest
Updated 2026/2027.
Anatomy - ansthe various structures of the body, what they look like, and their relationship to
one another
Gross Anatomy - ansstructures visible to the naked eye
Regional Anatomy - ansspecific regions of the body such as the head or chest
can find organs from different systems in the same region
systemic anatomy - ansstudies the anatomy of each functional body system
systems span across multiple regions
Microscopic Anatomy - ansdeals with structures too small to be seen with the naked eye
Cytology - ansstudy of cells
Histology - ansstudy of tissues
physiology - anshow these individual body parts work (or function) on a normal level
principle of complementarity of structure and function - answhat a structure can do is
dependent on its form
bones are hard and hold up most of our body weight
chemical level of organization - ansatoms and molecules
cellular level of organization - anssmallest living unit of the body
cells function differently depending on where they are found
tissue level of organization - anscollections of 2 or more cells that carry out a similar function
Four Basic Types of Tissue - ansepithelial, connective, muscle, nervous
organ - ansany structure with two or more tissue types
Organ level of organization - anstissues operate together to perform a certain function
Organ System Level of organiztion - ansmultiple organs work together to accomplish a
purpose
Organismal Level of Organization - ansAll organ systems working together to keep the
organism alive
Necessary Life Function #1 - Maintaining Boundaries - anscell level --> cell membranes keep
organelles together and separate intercellular and extracellular fluid
organismal level --> skin holds us together, prevents water loss, and helps prevent the
entrance of pathogens
Necessary Life Function #2- Movement - ansCooperation of skeletal and muscular systems to
coordinate actions
Necessary Life Function #3- Responsiveness (or Excitability) - ansSensing environmental
changes and responding to them
Are all cells responsive? - ansyes to a certain extent, but CNS cells are the most responsive
Necessary Life Function #4- Digestion - ansFood is broken down to simple molecules to be
absorbed to blood and delivered to various tissues
Necessary Life Function #5- Metabolism - ansCatabolism, Anabolism, and Cellular
Respiration
,Comprehensive Exam Study Guide on BIOL 251-
Anatomy and Physiology Exam 1 EXAM, MOST
TESTED QUESTIONS AND VERIFIED
SOLUTIONS/GET IT 100% ACCURATE!! Latest
Updated 2026/2027.
Catabolism - ansbreaking down
anabolism - ansbuilding up
cellular respiration - ansATP Production through glucose and oxygen
Necessary Life Function #6- Excretion - ansRemoval of Waste produced during digestive and
metabolic functions
ex- Digestive waste, urine, respiratory release of CO2
Necessary Life Function #7- Reproduction - ansCell Level --> cells must divide for organism
to survive
Organismal level --> Production of offspring
Necessary Life Function #8- Growth - ansIncrease in the number of body cells, or increase in
size of individual cells themselves
anabolic rate must be greater than catabolic rate
Survival Need 1- Nutrients - ansBrought into the body by ingestion
include carbs, fats, proteins, vitamins and minerals
Survival Need 2- Oxygen - anscells can only survive a few minutes without oxygen
Survival Need 3- Water - ansPrimary solvent in the body, provides environment for chemical
reactions and serves as fluid base for secretions and excretion
Survival Need 4 - Endothermy - ansbody temperature must be maintained for chemic
processes to occur (98.6)
Survival Need 5- Atmospheric Pressure - ansbreathing and gas exchange occur at an
appropriate atmospheric pressure
Homeostasis - ansmaintenance of the internal condition of the body despite a constantly
changing external environment
Variable definition within homeostasis - answhat is being controlled or regulated
Receptor definition within homeostasis - ansreceives info about a specific variable, produces
a message to send to the control center
Control Center - Homeostasis - ansinterprets message, sends message about solution to the
effector
Effector definiton- Homeostasis - ansstructure or organ that makes the change in order to
resolve back to homeostasis
Negative feed back mechanism - ansCause the variable to change in a direction that is
opposite of the initial change to prevent severe changes in the body
ex- thermoregulation with shivering and sweating
Positive feedback mechanism - anscause the original change of the variable to be enhanced
- Extreme Change!!
ex- Clotting, and oxytocin release during labor
Imbalance in homeostasis - ansaging often leads to homeostatic imbalance
, Comprehensive Exam Study Guide on BIOL 251-
Anatomy and Physiology Exam 1 EXAM, MOST
TESTED QUESTIONS AND VERIFIED
SOLUTIONS/GET IT 100% ACCURATE!! Latest
Updated 2026/2027.
control systems become less efficient, making us more susceptible to disease
oral and digestive cavities - ansmouth and cavities of the digestive organs
OPEN TO EXTERNAL ENVI
Nasal cavity - answithin and posterior to nose, part of the respiratory passageway
OPEN TO EXTErNAL ENVI
orbital cavity - ansorbitals of the skill, kinda open
Middle Ear Cavity - anscontains bones (ossicles) that transmit sound vibrations
closed off
Synovial Cavities - ansAre joint cavities, enclosed within the fibrous capsules that surround
freely movable joints of the body i.e. elbow and knee joints.
closed off
Colloids - ansheterogeneous mixtures composed of large solute particles that DO NOT settle
out
sol-gel transformations - ansto change reversibly from a fluid (sol) state to a more solid (gel)
state (and back again
example of sol-gel transformation in the body - anscytosol of cells changes depending on
certain cell activities (cell division, change in shape, etc.)
suspensions - ansheterogeneous mixture composed of large solute particles that DO settle out
example of suspension in the body - ansblood contains a fluid portion called plasma with
various cell types suspended in it (RBC, WBC, Platelets)
Ionic Bond - anstransfer of electrons from one atom to another
anions - ansaccept the electron and become negatively charged
cations - ansdonate the electron and become positively charged
Covalent Bonds - ansatoms share some electrons in a common orbital
nonpolar moelcule - ansatoms in a covalent bond share electron equally and are electrically
balanced with no poles
polar molecules - ansone atom is an "electron hog" and creates poles
hydrogen bonds - answhen a bonded hydrogen is pulled by another electron hungry atom
why does water form droplets - anssurface tension from the oxygens pulling on the hydrogen
in other water molecules
hydrogen bonding and proteins - anshydrogen bonds hold proteins together which is
important since structure determines function
synthesis reaction - ansformation of bonds between atoms or molecules to form larger, more
complex structures
ENDERGONIC
ex- anabolic rxn
