BIOL251 Human Anatomy & Physiology I w/Lab 2026 | Module 6
Certification Exam Questions and Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant Download Pdf
What is metabolism? -ANSWERS-a broad term that includes all
chemical reactions that occur within the body
includes breaking down substances into their simpler building blocks
(catabolism), synthesizing more complex cellular structures from
simpler ones (anabolism), and using nutrients and oxygen to produce
ATP, the energy rich molecules that power cellular activities
What are the survival needs? -ANSWERS-Nutrients (needed for energy
and cell building), oxygen (approx. 20% of the air we breathe), water
(60-80% of our body), normal body temp. (37 c) and atmospheric
pressure (force that air exerts on the surface of the body
What is homeostasis? -ANSWERS-the ability to maintain a relatively
stable internal environment in an ever-changing outside world
What are control mechanisms for homeostasis? -ANSWERS-3
components -- the receptor is a sensor that monitors the environment
and responds to changes, called stimuli and then sends info to the
control center where it is analyzed and determines the appropriate
response or course of action (determines the set point - the level that
must be maintained) and then the info flows to the effector which
provides the means for the control centers response to the stimulus
(output). The results of the response then feed back to influence the
,effect of the stimulus by either reducing it (negative feedback) or
enhancing it (positive feedback)
What is negative feedback within homeostasis? and example -
ANSWERS-the response reduces or shuts off the original stimulus
regulation of body temp (nervous mechanism) regulation of blood
sugar (endocrine mechanism)
What separates living beings from nonliving objects? -ANSWERS-Living
organisms are able to maintain their boundaries, move, respond to
environmental change, digest nutrients, carry out metabolism, dispose
of wastes, reproduce and grow. while inanimate objects do not exhibit
all of these
What name is given to all chemical reactions that occur within body
cells -ANSWERS-metabolism
Why is it necessary to be in a pressurized cabin when flying at 30,000
feet? -ANSWERS-because the atmosphere is thinner at high altitudes
and the amount of oxygen entering the blood under such conditions
may be insufficient to maintain life
What's the process of negative back for regulation of blood volume by
ADH -ANSWERS-Receptors sense decreased blood volume, control
center in hypothalamus stimulates pituitary gland to release
antidiuretic hormone ADH, ADH causes the kidneys (effectors) to return
more water to the blood.
, What is positive feedback examples -ANSWERS-the response enhances,
exaggerates or accelerates the original stimulus (cascades); exhibits an
amplifying effect; usually controls infrequent events ex: enhancement
of labor contractions by oxytocin, platelet plug formation and blood
clotting
Homeostatic imbalance is the ...what does this cause? -ANSWERS-
disturbance of homeostasis increases risk of disease, contributes to
changes associated with aging, may allow destructive positive feedback
mechanisms to take over (heart failure)
the head is _______ to the abdomen -ANSWERS-superior
the navel is ______ to the chin -ANSWERS-inferior
the breastbone is _____ to the spine -ANSWERS-anterior (ventral)
the heart is _____ to the breastbone -ANSWERS-posterior (dorsal)
the heart is _____ to the arm -ANSWERS-medial
the arms are _____ lateral to the chest -ANSWERS-lateral
Certification Exam Questions and Correct Answers (Verified Answers)
Plus Rationales 2026 Q&A | Instant Download Pdf
What is metabolism? -ANSWERS-a broad term that includes all
chemical reactions that occur within the body
includes breaking down substances into their simpler building blocks
(catabolism), synthesizing more complex cellular structures from
simpler ones (anabolism), and using nutrients and oxygen to produce
ATP, the energy rich molecules that power cellular activities
What are the survival needs? -ANSWERS-Nutrients (needed for energy
and cell building), oxygen (approx. 20% of the air we breathe), water
(60-80% of our body), normal body temp. (37 c) and atmospheric
pressure (force that air exerts on the surface of the body
What is homeostasis? -ANSWERS-the ability to maintain a relatively
stable internal environment in an ever-changing outside world
What are control mechanisms for homeostasis? -ANSWERS-3
components -- the receptor is a sensor that monitors the environment
and responds to changes, called stimuli and then sends info to the
control center where it is analyzed and determines the appropriate
response or course of action (determines the set point - the level that
must be maintained) and then the info flows to the effector which
provides the means for the control centers response to the stimulus
(output). The results of the response then feed back to influence the
,effect of the stimulus by either reducing it (negative feedback) or
enhancing it (positive feedback)
What is negative feedback within homeostasis? and example -
ANSWERS-the response reduces or shuts off the original stimulus
regulation of body temp (nervous mechanism) regulation of blood
sugar (endocrine mechanism)
What separates living beings from nonliving objects? -ANSWERS-Living
organisms are able to maintain their boundaries, move, respond to
environmental change, digest nutrients, carry out metabolism, dispose
of wastes, reproduce and grow. while inanimate objects do not exhibit
all of these
What name is given to all chemical reactions that occur within body
cells -ANSWERS-metabolism
Why is it necessary to be in a pressurized cabin when flying at 30,000
feet? -ANSWERS-because the atmosphere is thinner at high altitudes
and the amount of oxygen entering the blood under such conditions
may be insufficient to maintain life
What's the process of negative back for regulation of blood volume by
ADH -ANSWERS-Receptors sense decreased blood volume, control
center in hypothalamus stimulates pituitary gland to release
antidiuretic hormone ADH, ADH causes the kidneys (effectors) to return
more water to the blood.
, What is positive feedback examples -ANSWERS-the response enhances,
exaggerates or accelerates the original stimulus (cascades); exhibits an
amplifying effect; usually controls infrequent events ex: enhancement
of labor contractions by oxytocin, platelet plug formation and blood
clotting
Homeostatic imbalance is the ...what does this cause? -ANSWERS-
disturbance of homeostasis increases risk of disease, contributes to
changes associated with aging, may allow destructive positive feedback
mechanisms to take over (heart failure)
the head is _______ to the abdomen -ANSWERS-superior
the navel is ______ to the chin -ANSWERS-inferior
the breastbone is _____ to the spine -ANSWERS-anterior (ventral)
the heart is _____ to the breastbone -ANSWERS-posterior (dorsal)
the heart is _____ to the arm -ANSWERS-medial
the arms are _____ lateral to the chest -ANSWERS-lateral
