68W ALC PHASE 3 Exam Study
Guide – 279 Practice Questions
with Verified Answers. GRADED
A+. Latest 2026/2027 Update
What is Threat Stress? - Answer✔✔-Anything that stimulates the sympathetic
nervous system (fight-or-flight).
Examples of threat stress? - Answer✔✔-Bullets flying, written test, practical
test, intimidating instructor.
The nervous system is divided into two main structural divisions: - Answer✔✔-
The Central Nervous System (CNS) and the Peripheral Nervous System (PNS)
Central Nervous System (CNS) - Answer✔✔-Controls the brain and spinal cord.
The Peripheral is divided into two sub-systems: - Answer✔✔-The Somatic
Nervous System and the Autonomic Nervous System.
The Somatic Nervous System - Answer✔✔-Controls sensory nerves and the
efferent, motor nerves (intentional movement and sensation).
,The Autonomic Nervous System - Answer✔✔-Controls automatic (involuntary)
body functions (unconscious body functions).
1. The physiological effects seen from threat stress are under the influence of
the Autonomic Nervous System, which is a sub-system of the Peripheral
Nervous System.
2. The Autonomic Nervous System is further broken down into two sub-
systems:
a. Sympathetic Nervous System (Fight-or-Fight)
b. Parasympathetic Nervous System ("Feed and Breed")
Two sub-systems of the Autonomic Nervous System? - Answer✔✔-1.
Sympathetic Nervous System (Fight-or-Flight)
2. Parasympathetic Nervous System ("Feed and Breed")
Sympathetic Nervous System (Fight-or-Flight) - Answer✔✔-This system is
mediated by catecholamine's including epinephrine (adrenalin),
norepinephrine and dopamine.
Effects of Sympathetic Nervous System (Fight or flight) - Answer✔✔-1. Pupil
dilation. Enables better light gathering for better vision, but causes loss of
depth perception and loss of peripheral vision. This may cause problems for
68Ws with Intravenous catheterization and surgical cricothyroidotomy.
,2. Tremors. This may make handling of tools and performance of procedures
such as intravenous catheterization, surgical cricothyroidotomy and writing
more difficult.
3. Tachycardia. May cause more oxygen consumption.
4. Vasoconstriction. May result in decreased large muscle endurance due to
decreased oxygen supply.
5. Bronchodilation. May result in enhanced respiration.
6. Blood shunting from the fore-brain (the human, thinking part of our brain) to
the midbrain (the basic, mammal, animal-instinct part of our brain). Result in
decreased cognitive (thinking) ability.
7. Enhanced neural stimulation of large muscle groups. Resulting in more
strength.
Effects of Parasympathetic Nervous System ("Feed and Breed") include: -
Answer✔✔-1. Asserts an opposite effect to the SNS (Sympathetic Nervous
System).
2. Mediated by acetylcholine, mainly in the 10th Cranial Nerve (Vagus Nerve).
3. Stimulates digestion, slowing of the heart rate and reproductive functions.
, 4. Since pulse increases as SNS stimulation increases, pulse can be used as an
approximate indicator of stimulation.
What does not correlate with SNS (Sympathetic Nervous System) stimulation? -
Answer✔✔-Tachycardia due to medications, illness, or exercise.
Physiological changes: fear and performance are based on levels of
physiological stimulation during battle, which are categorized within five
conditions: - Answer✔✔-1. Condition White
2. Condition Yellow
3. Condition Red
4. Condition Black
5. Condition Gray
Describe Condition White? - Answer✔✔-The individuals baseline vital signs are
at normal range with no elevated stimulation.
1. Normal pulse, respiratory rate, fine motor skills intact, cognition normal.
2. Example is a deployed Soldier in his billet or recreation area.
Describe Condition Yellow? - Answer✔✔-Limited stimulation.
1. Pulse rate approximately 80-115.
Guide – 279 Practice Questions
with Verified Answers. GRADED
A+. Latest 2026/2027 Update
What is Threat Stress? - Answer✔✔-Anything that stimulates the sympathetic
nervous system (fight-or-flight).
Examples of threat stress? - Answer✔✔-Bullets flying, written test, practical
test, intimidating instructor.
The nervous system is divided into two main structural divisions: - Answer✔✔-
The Central Nervous System (CNS) and the Peripheral Nervous System (PNS)
Central Nervous System (CNS) - Answer✔✔-Controls the brain and spinal cord.
The Peripheral is divided into two sub-systems: - Answer✔✔-The Somatic
Nervous System and the Autonomic Nervous System.
The Somatic Nervous System - Answer✔✔-Controls sensory nerves and the
efferent, motor nerves (intentional movement and sensation).
,The Autonomic Nervous System - Answer✔✔-Controls automatic (involuntary)
body functions (unconscious body functions).
1. The physiological effects seen from threat stress are under the influence of
the Autonomic Nervous System, which is a sub-system of the Peripheral
Nervous System.
2. The Autonomic Nervous System is further broken down into two sub-
systems:
a. Sympathetic Nervous System (Fight-or-Fight)
b. Parasympathetic Nervous System ("Feed and Breed")
Two sub-systems of the Autonomic Nervous System? - Answer✔✔-1.
Sympathetic Nervous System (Fight-or-Flight)
2. Parasympathetic Nervous System ("Feed and Breed")
Sympathetic Nervous System (Fight-or-Flight) - Answer✔✔-This system is
mediated by catecholamine's including epinephrine (adrenalin),
norepinephrine and dopamine.
Effects of Sympathetic Nervous System (Fight or flight) - Answer✔✔-1. Pupil
dilation. Enables better light gathering for better vision, but causes loss of
depth perception and loss of peripheral vision. This may cause problems for
68Ws with Intravenous catheterization and surgical cricothyroidotomy.
,2. Tremors. This may make handling of tools and performance of procedures
such as intravenous catheterization, surgical cricothyroidotomy and writing
more difficult.
3. Tachycardia. May cause more oxygen consumption.
4. Vasoconstriction. May result in decreased large muscle endurance due to
decreased oxygen supply.
5. Bronchodilation. May result in enhanced respiration.
6. Blood shunting from the fore-brain (the human, thinking part of our brain) to
the midbrain (the basic, mammal, animal-instinct part of our brain). Result in
decreased cognitive (thinking) ability.
7. Enhanced neural stimulation of large muscle groups. Resulting in more
strength.
Effects of Parasympathetic Nervous System ("Feed and Breed") include: -
Answer✔✔-1. Asserts an opposite effect to the SNS (Sympathetic Nervous
System).
2. Mediated by acetylcholine, mainly in the 10th Cranial Nerve (Vagus Nerve).
3. Stimulates digestion, slowing of the heart rate and reproductive functions.
, 4. Since pulse increases as SNS stimulation increases, pulse can be used as an
approximate indicator of stimulation.
What does not correlate with SNS (Sympathetic Nervous System) stimulation? -
Answer✔✔-Tachycardia due to medications, illness, or exercise.
Physiological changes: fear and performance are based on levels of
physiological stimulation during battle, which are categorized within five
conditions: - Answer✔✔-1. Condition White
2. Condition Yellow
3. Condition Red
4. Condition Black
5. Condition Gray
Describe Condition White? - Answer✔✔-The individuals baseline vital signs are
at normal range with no elevated stimulation.
1. Normal pulse, respiratory rate, fine motor skills intact, cognition normal.
2. Example is a deployed Soldier in his billet or recreation area.
Describe Condition Yellow? - Answer✔✔-Limited stimulation.
1. Pulse rate approximately 80-115.
