Army MFT Exam 2 Answers

1. Which of the following statements is true about the muscle active during breathing?
a. Primary the diaphragm during strenuous exercise.
b. Primary the intercostal and abdominals during rest
c. Both the diaphragm and intercostal during exercise and rest
d. Neither the diaphragm nor the intercostal during rest

2. What are the small sac like structures in the lungs where oxygen moves into the bloodstream and what is the process called?
a. Bronchioles and diffusion
b. Alveoli and diffusion
c. Capillaries and infusion
d. Alveoli and infusion

3. Which of the following is correct in reference to heart function?
a. The left side of the heart pumps blood to the entire body
b. The right side of the heart pumps blood to the entire body
c. The left side of the heart pumps blood into the lungs
d. It takes ten minutes for both sides of the heart to start pump the entire blood supply throughout the body.

4. Which of the following statements is true concerning the components of blood?
a. Blood maybe divided into two entities. Cells and plasma
b. Red blood cells contain antibodies to fight infection and platelets for clotting
c. White blood cells contain water, proteins, glucose and electrolytes
d. Plasma contains hemoglobin, which attaches to and carries oxygen.

5. What are the effects of regular exercise, especially aerobic activates, on the OTS?
a. Increase in lung efficiency and capacity due to decreased diffusion
b. Increase in lung efficiency and capacity, cardiac output and a-v O2 difference.
c. Increase in lung efficiency and capacity and a decrease in a-v O2 difference
d. Increase in lung efficiency and capacity decrease in heart rate and stroke volume.

6. How do diet and exercise positively affect CV disease risk?
a. Elevates blood pressure and decreases insulin production
b. Increases LDL cholesterol levels and relieves stress
c. Burn fat and utilizes protein for energy
d. Decreases elevated blood pressure and cholesterol

7. Which of the following best matches the energy system used to make ATP and its primary fuel(s)?
a. Phoshagen system / phosphocreatine (PCr) and stored fats
b. Abaerobic glycolysis / carbohydrates and protein stored in the liver
c. Aerobic respiration / carbohydrates and fats
d. Bet oxidation / carbohydrates and protein.

8. What by-product of anaerobic metabolism will shut it down when in excess?
a. Pyruic acid
b. Citric acid
c. Hydrochloric acid
d. Lactic acid

9. What factors influence the contribution of carbohydrates vs fats as fuel to make ATP?
a. Performing high intensity activities primarily use fats
b. Performing long distance activities primarily use carbs
c. Well-conditioned individuals will burn fat sooner and better tolerate lactic acid
d. Diet has little or no effect on fuel source used for making ATP.

10. Using the following meal information what percentage of calories comes from carb>
Carbs 50g, protein 19g, fat 17g
a. 18 percent
b. 36 percent
c. 46 percent
d. 58 percent

11. Several terms used by the institute of medicine for nutrient recommendations. Which of the following would best be used to guide a person daily’s intake of omega 3-fatty acids and why?
a. Adequate intake(AI)- omega-3 fatty acids have not been researched enough by scientist to make a conclusive recommendation, so the AI provides a guide for adequate amounts
b. Estimated average requirements – this is a researched-based requirements to meet the average person’s needs
c. Acceptable macronutrients distribution range- these ranges provide suggestions for the range of fat intake.
d. Recommended dietary allowances- these provide levels of nutrient requirements across all populations, regardless of occupation or age.

12. The main reason to perform dietary recall is to?
a. Diagnose anorexia nervosa
b. Help soldiers understand their daily eating habits
c. Monitor a person blood sugar levels
d. Provide more accurate information to health care providers

13. Dietary recalls include information about?
a. Timing of meals, types of food, sleep duration and quality and bowel movements
b. Timing of meals, sleep duration, and quality, fluid intake and exercise intensity
c. Body weight, resting heart rate, exercise duration and frequency
d. Food ingredients, vitamins, minerals and supplements

14. Which of the following statements is NOT true about flexibility?
a. Flexibility is the range of movement at a joint or groups of joints and the surrounding muscles
b. Flexibility is the ability to readily adapt to changes in position or alignment in order to complete a precise movement.
c. Flexibility can be expressed as normal, limited(hyomobile) or excessive(hypermobile)
d. Flexibility contributes greatly to ATP production and aerobic endurance

15. Modifiable strength improvements factors include all of the following except
a. Anatomy and physiology
b. Muscle size and training specify
c. Muscle fiber recruitment
d. Motor pattern development and muscle memory

16. Strength runs a continuum between what two subcomponents
a. Aerobic and anaerobic endurance
b. Strength, endurance and mobility
c. Loaded and unloaded
d. Absolute muscular strength and muscular endurance

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