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NAS 2 Challenge Exam Questions and
Correct Answers/ Latest Update / Already
Graded
List the 8 Life functions necessary for Life.
Ans: How are these related?
1. Synthesis
2. Respiration
3. Regulation
4. Reproduction
5. Excretion
6. Growth
7. Nutrition
8. Transport
Metabolism
Ans: ANABOLIC + CATABOLIC
Both anabolism and catabolism occur simultaneously and
continuously to keep you alive.
Anabolism
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Ans: SMALL substances are combined into larger/complex
molecules
Catabolism
Ans: LARGE substances are broken down into smaller/simpler
molecules. ("destructive metabolism" releases energy)
Anatomy
Ans: study of body structure of an entire organism
Physiology
Ans: study of internal functioning of an organism
Give the order of the 5 steps in the Homeostatic Control Mechanism.
Ans: How are these related?
1. stimulus
2. receptor
3. integrator/control center
4. effector
5. set point
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negative feedback
Ans: mechanism that exists as a feedback loop because it can
either increase or decrease the stimulus. will perform the
opposite of the stimulus in order to return to homeostasis. (ex.
human body temperature, blood sugar regulation)
positive feedback
Ans: maintains the direction of the stimulus, possibly
accelerating it. (ex. Blood clotting/coagulation - as one clotting
factor is activated, it activates the next factor in the sequence
until a fibrin clot is achieved) (ex. Human birth - pressure on
cervix, contractions, hormone secretion)
Homeostasis
Ans: "steady state"; ability to maintain internal conditions
within a normal range almost constantly. Tendency towards
relatively stable equilibrium between interdependent elements.
Describe the anatomical position
Ans: the body is standing upright with the feet at shoulder
width and parallel, toes forward. Upper limbs are held out to
each side, and the palms of the hands face forward
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Head (Axial Body Region)
Ans: cephalic
Neck (Axial Body Region)
Ans: cervical
skull (Axial Body Region)
Ans: cranial
forehead (Axial Body Region)
Ans: frontal
nose (Axial Body Region)
Ans: nasal
base of skull (Axial Body Region)
Ans: occipital
mouth (Axial Body Region)
All rights reserved © 2025/ 2026 |
NAS 2 Challenge Exam Questions and
Correct Answers/ Latest Update / Already
Graded
List the 8 Life functions necessary for Life.
Ans: How are these related?
1. Synthesis
2. Respiration
3. Regulation
4. Reproduction
5. Excretion
6. Growth
7. Nutrition
8. Transport
Metabolism
Ans: ANABOLIC + CATABOLIC
Both anabolism and catabolism occur simultaneously and
continuously to keep you alive.
Anabolism
All rights reserved © 2025/ 2026 |
, Page |2
Ans: SMALL substances are combined into larger/complex
molecules
Catabolism
Ans: LARGE substances are broken down into smaller/simpler
molecules. ("destructive metabolism" releases energy)
Anatomy
Ans: study of body structure of an entire organism
Physiology
Ans: study of internal functioning of an organism
Give the order of the 5 steps in the Homeostatic Control Mechanism.
Ans: How are these related?
1. stimulus
2. receptor
3. integrator/control center
4. effector
5. set point
All rights reserved © 2025/ 2026 |
, Page |3
negative feedback
Ans: mechanism that exists as a feedback loop because it can
either increase or decrease the stimulus. will perform the
opposite of the stimulus in order to return to homeostasis. (ex.
human body temperature, blood sugar regulation)
positive feedback
Ans: maintains the direction of the stimulus, possibly
accelerating it. (ex. Blood clotting/coagulation - as one clotting
factor is activated, it activates the next factor in the sequence
until a fibrin clot is achieved) (ex. Human birth - pressure on
cervix, contractions, hormone secretion)
Homeostasis
Ans: "steady state"; ability to maintain internal conditions
within a normal range almost constantly. Tendency towards
relatively stable equilibrium between interdependent elements.
Describe the anatomical position
Ans: the body is standing upright with the feet at shoulder
width and parallel, toes forward. Upper limbs are held out to
each side, and the palms of the hands face forward
All rights reserved © 2025/ 2026 |
, Page |4
Head (Axial Body Region)
Ans: cephalic
Neck (Axial Body Region)
Ans: cervical
skull (Axial Body Region)
Ans: cranial
forehead (Axial Body Region)
Ans: frontal
nose (Axial Body Region)
Ans: nasal
base of skull (Axial Body Region)
Ans: occipital
mouth (Axial Body Region)
All rights reserved © 2025/ 2026 |
