Aerospace Physiology 25-07 Practice Test

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• What term describes the force exerted from the head toward the feet during vertical acceleration?
• Which of the following is NOT a function of the respiratory system?
• DCS with symptoms including disturbances in vision, severe persistent headache, partial paralysis, loss of speech or hearing, vertigo and loss of orientation is classified as?
• Which term in the SHELL model corresponds to the human element in aviation systems?
• The retinal feature that lacks photoreceptors and is the anatomical blind spot is the:
• This vision is used when light availability is between adequate and inadequate. Here both rods and cones are active, although not at peak efficiency.
• Which term describes the combination of protective devices used for hearing protection?
• In the SHELL model, which element represents the equipment, material, and physical assets of a system?
• Which type of hypoxia is caused by low environmental oxygen pressure?
• What color are high pressure oxygen systems, and what are they normally pressurized to?
• Histotoxic hypoxia results when the O2 delivered to tissues and cells cannot be used for energy production.
• Which photoreceptors enable you to see the details of the world in color under bright light conditions?
• Which symptom is associated with CNS manifestations of DCS?
• Why is a slow decompression potentially the most dangerous?
• What is the unit of measurement for frequency?
• Which term describes the inability to accurately orient yourself with respect to the Earth’s horizon?
• Which statement lists factors that influence hypoxic hypoxia?
• Which of the following is a common hypoxia symptom?
• The force applied from the front to the back of the body.
• After recovering from G-LOC, the ability to return to full alertness is not immediate. What is this condition called?
• Which trapped gas disorders are most commonly encountered on descent?
• Which of the following lists the three types of spatial disorientation?
• Considered a parallel processor. This level of our mind is capable of doing more than one thing at a time and can do them very quickly.
• In the SHELL model, which element comprises the rules, regulations, policies, and guidance that govern how a system operates?
• Tiny sacs in the lungs that exchange oxygen and carbon dioxide with the bloodstream are called what?
• Which DCS type is associated with a mottled reddish or purplish rash on the skin?
• What is the most effective method to minimize hazards of decompression sickness, hypoxia, and fatigue?
• DCS with symptoms including deep sharp pain centrally located under the sternum, a dry nonproductive cough, and difficulty with inspiration is called?
• A nonpermanent loss of hearing in a frequency or range of frequencies after exposure to loud noise.
• Which vision is used in daylight with sufficient light to activate the cones; best acuity and reaction time?
• What are the most practical hearing protection available to you?
• Which term symbolizes humans in the aviation system and considers human performance, capabilities, and their limitations?
• Which photoreceptors are densest at the periphery of the retina and support peripheral vision in dim light?
• Which unit is used to measure frequency?
• In which vision is color vision lost?
• The level at which we actively process information; we are at our best when we do one thing at a time (serially).
• When the temperature remains constant, a volume of gas is inversely proportional to the surrounding pressure; this describes which law?
• The inward movement of eyes to focus on a near object.
• This zone extends from approximately 10,000 feet to approximately 50,000 feet and features reduced atmospheric pressure, inadequate oxygen, and risk of decompression sickness.
• What effect does rapid decompression have on Time of Useful Consciousness (TUC)?
• What are the three types of fatigue?
• What is the approximate composition of Earth's atmosphere?
• Which of the following is a function of the respiratory system?
• A change in direction without a change in speed. Occurs when pulling out of a dive, pushes over into a dive, or performs an inside or outside turn.
• Which areas of the body are most commonly affected by trapped gas disorders?
• In daylight, color discrimination is primarily mediated by which retinal photoreceptors?
• Which term describes the ability to adjust the crystalline lens to focus near or far objects?
• What describes the interface between the primary human element and the secondary human element, such as other crew members and air traffic controllers?
• Which of the following is NOT a type of spatial disorientation?
• Which initial action is indicated by the Green Ring protocol for physiological symptoms?
• What is the primary and most critical disadvantage of aircraft pressurization?
• Which of the following correctly pairs a type of hypoxia with its defining characteristic?
• What is the unit of measurement for intensity?
• A simultaneous change in both speed and direction. Occurs during most aerial maneuvers.
• Ability to adjust the strength of lens (required to focus both near and far objects on retina).
• Which item is the first step in the RICE check for oxygen systems?
• What is the primary purpose of the respiratory system?
• Which of the following is a method of recovering situational awareness?
• Which acceleration involves a change in direction without speed change?
• Which illusion is caused by linear acceleration?
• What is the illusion that means 'self-motion' and occurs by staring at a single light source against a dark background?
• Which of the following is NOT a unit for measuring atmospheric pressure?
• Which of the following is a sign of hypoxic hypoxia?
• Placing demands in perspective, maintaining a healthy diversity in your life, eliminating self-imposed stress, and having good self assessment habits are all methods of?
• Which areas are more susceptible to trapped gas disorders on ascent?
• Which component detects linear acceleration in the vestibular system?
• What are the two types of decompressions?
• The otolith organs respond to what kind of acceleration?
• Exists above 50,000 feet. The physiological problems of flight above 50,000 feet are essentially the same as those for space.
• Which factor is NOT typically listed as affecting oxygen delivery to tissues?
• Which of the following is a symptom of hypoxia?
• Acceleration that involves a change in speed without a change in direction.
• What are the standard sea-level temperature and atmospheric pressure?
• Which system transports and distributes nutrients and oxygen to the tissues and removes waste products of metabolism?
• The sum of chemical and physical processes which maintain life.
• Which type of hypoxia is caused by exposure to low barometric pressure leading to reduced oxygen partial pressure?
• Which term describes a temporary reduction in hearing sensitivity following noise exposure?
• Concentrated on the fovea. Its primary function is to recognize and identify objects, generally to answer the 'what is it' question.
• The force applied from the feet to the head.
• What term describes the combined weight of all atmospheric gases acting to create a force upon the surface of the Earth?
• Hypemic hypoxia is characterized by which of the following?
• Which statement is NOT part of the described treatment protocol?
• A change in speed without a change in direction. Occurs during takeoff, landing, or level flight.
• Which atmospheric zone extends from about 10,000 feet to 50,000 feet?
• Which term describes the optimization of the relationship between people and their activities through the systematic application of human sciences within systems engineering?
• Which law states that volume is inversely proportional to pressure when temperature is constant?
• Which illusion is specifically associated with angular acceleration?
• Illusions caused by linear accelerations, with the otolith organs responding to linear acceleration forces, are called?
• Which type of spatial disorientation occurs when the pilot recognizes the error but remains disoriented?
• What color are low pressure oxygen systems, and what are they normally pressurized to?
• Which of the following is a common symptom of hypoxia?
• What term measures the magnitude of an acoustic event and is a measure of pressure of sound waves in the ear canal?
• What is the active component of respiration?
• What is the primary purpose of the red blood cell (RBC)?
• Which of the following are causes for hypemic hypoxia?
• What structure in the lungs is primarily responsible for gas exchange with the blood?
• Disorder produced by the evolution of gas from tissues and fluids of the body (nitrogen bubbles)?
• Which pressurization system unpressurizes until a preset cabin pressure is reached, then maintains a constant cabin pressure until a selected differential is attained?
• The movement of oxygen and carbon dioxide between the alveoli and the blood is called?
• Which part of the vasculature carries blood away from the heart?
• In the IM SAFE mnemonic, which item represents Fatigue?
• How often is air normally exchanged per minute in a healthy adult?
• Excessive loss of carbon dioxide from the blood.
• Which are the three types of vision?
• Which term describes the cockpit and organizational context, including culture and workflow, in which humans operate?
• What is the passive component of respiration?
• Which law describes gas behavior using three interrelated variables: pressure, volume, and temperature?
• What term describes the diffusion of a gas from an area of higher concentration to an area of lower concentration until equilibrium is reached?
• The innermost layer of the eye, containing millions of photoreceptors, is the:
• Which part of the vestibular system measures angular acceleration?
• Which cockpit control is explicitly referenced in the protocol for handling physiological symptoms?
• Part of the red blood cell that is responsible for transporting O2 and CO2?
• Illusions caused by stimulation of the semicircular canals due to angular acceleration are called?
• Which part of the vasculature carries blood back to the heart?
• What are the levels of situational awareness?
• What are the steps of treatment for decompression sickness?
• An oxygen deficiency sufficient to cause impairment of function.
• Which gas law states that the total pressure of a mixture equals the sum of the partial pressures of each gas?
• What is the most common means of preventing hypoxia?
• What is Time of Useful Consciousness as defined?
• Which option lists factors that can affect oxygen delivery to the tissues?
• Which atmospheric zone exists above 50,000 feet and has problems similar to those in space?
• DCS in which pain is generally localized in and around the joints of the body is known as?
• What is the maximum percentage of oxygen the T-6 OBOGS can produce when the concentration lever is positioned in MAX?
• Which component detects angular acceleration in the vestibular system?
• What term describes an aircrew's continuous perception of self and aircraft in relation to the dynamic environment of flight, threats, and mission, and the ability to forecast, then execute tasks based upon that perception?
• Which of the following is not a fatigue type?
• What is the recommended action after initiating DCS treatment to ensure patient safety?
• Which oxygen system is abbreviated as OBOGS?
• In the retina, which cells mediate color vision under bright light?
• Which thermal stress is most dangerous and requires immediate medical attention?
• What occurs at night time since the cones in the fovea require high light levels to function?
• What is the most dangerous type of spatial disorientation you can experience?
• Occurs when the cochlea's ability to convert a certain frequency to electrical signals is lost because of hair cell damage.
• Which atmospheric zone extends from sea level to about 10,000 feet and is the zone the human body is adapted to?
• Stagnant hypoxia occurs when a reduction in cardiac output, pooling of the blood, or restriction of blood flow reduces O2 delivery.
• Used primarily to orient oneself relative to the environment and constitutes the remainder of the visual field.
• Which of the following is a somatogravic illusion?
• Which item is not part of the RICE check?
• The weight of the atmosphere can be measured in what units?
• Which photoreceptors are primarily responsible for color vision under daylight?
• Which structure is considered an anatomical blind spot because there are no photoreceptors located there?
• Which term denotes the interface between the primary human element and the secondary human element?
• What is the tiny pit that contains only cones and is the natural point on the retina where the lens focuses an image?
• Which of the following is NOT a listed sign of hypoxic hypoxia?
• Which term describes the ongoing awareness of the aircraft’s position and threat environment during flight?
• Which of the following is a component of the IM SAFE mnemonic used for pilot self-assessment?
• The amount of a gas dissolved in a solution varies directly with the partial pressure of that gas over the solution. This is described by which law?
• The greatest pressure change occurs between which altitude ranges?
• Which of the following is NOT a phase of respiration?
• The region of the retina that provides the highest visual acuity and color discrimination in bright light is the:
• Cabin pressurization primarily helps prevent which hazard?
• Which gas law is described by the relationship among pressure, volume, and temperature and is often expressed as PV = nRT?
• Which term describes the humans in the aviation system and their abilities and limitations?
• Which term describes DCS manifestations including loss of vision, severe headache, vertigo and loss of orientation?
• What is the standard lapse rate?
• The number of times a sound wave oscillates?
• Which of the following is NOT part of the IM SAFE acronym?
• Which term refers to the cockpit, flight deck, ground control system, the organization, and the culture in which the human operates?
• Which part of the inner ear measures linear acceleration?
• What is the gaseous envelope surrounding the Earth?
• The photoreactive protein that gives rods their light sensitivity is called which?
• Which vision occurs when both rods and cones are active but not at peak efficiency due to intermediate light levels?
• Gas exchange in the lungs occurs primarily through the walls of which structures?
• During G-LOC, unconsciousness lasting roughly 9 to 21 seconds is referred to as which condition?
• What are the five common oxygen systems?
• A condition in which the rate and depth of breathing is abnormally increased.
• Which acceleration occurs during aerobatic maneuvers when speed and direction change?
• Descent below what altitude should be initiated according to the protocol?
• DCS that can produce a mottled, reddish, or purplish rash that develops on the skin is called?
• Which DCS form is characterized by chest pain and a dry nonproductive cough?
• Which cells mediate high-acuity color vision in bright light?
• The amount of gas dissolved in a solution varies directly with the partial pressure of that gas over the solution. This is described by which law?
• What are the three types of thermal stress?
• LOX is an acronym used for what in aerospace oxygen systems?
• Which aircraft pressurization system maintains a constant cabin pressure as altitude increases?
• Which vessels return blood to the heart?
• The inner ear contains two subsystems: the semicircular canals and the otolith organs. What is this overall system called?
• This vision is used during low-light conditions. Cone cells are ineffective, resulting in poor resolution of detail. Color vision is lost and visual acuity decreases as much as 20/200.