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29 Cards in this Set
- Front
- Back
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What is the proper sequence of blood flow through the heart?
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Vena cava, right atrium, right ventricle, pulmonary valve, pulmonary arteries, lungs, pulmonary veins, left atrium, mitral valve, left ventricle, aorta
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Which of the following has the GREATEST influence on exercise performance?
Oxygen extraction, aerobic threshold, crossbridge formation, myocardial VO2 max? |
Oxygen extraction.
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The phase in which the heart refills is known as _____?
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Systole
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Exercise program development is based on which of the following groups of variables?
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Frequency, time, type, and intensity
FITT |
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Which of the following is a characteristic of slow-twitch muscle fibers?
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They have a higher aerobic capacity than fast-twitch fibers.
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Which term best describes a muscle action in which the tension created by the muscle is variable throughout the range of motion?
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isotonic
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Golgi tendon organs serve as a protective mechanism against excessive _________________.
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Contractile force
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According to the sliding filament theory of muscle contraction, which of the following is the FIRST step in the sequence of events?
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A nervous impulse from the central nervous system
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Which type of blood vessels contain valves to prevent blood from flowing backwards?
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Veins
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Increased bone density proportional to the amount of stress placed on it is an example of?
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Wolffs law
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The tibia-fibula articulation is an example of what type of joint?
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Fibrous
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Flexion, extension, dorsiflexion and plantarflexion all occur in which plane?
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Sagittal
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Which muscle acts both to plantarflex the ankle and flex the knee joint?
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Gastrocnemius
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These muscles collectively make up the hamstrings?
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Biceps femoris, semitendinosus, semimembranosus
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The p[ectoralis major is a prime mover for shoulder_____ in the sagittal plane?
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Flexion
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Which muscle is a prime mover for internal rotation of the shoulder girdle?
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Subscapularis
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Rotatin of the vertebral column occurs in which plane?
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transverse
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The sacral plexus (spinal nerves L4 through S4) innervates which of the following areas of the body?
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Posterior thigh
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Muscle action that involves lengthening as tension is crated is described as?
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Eccentric
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The shoulder joint is capable of which of he following movements in the sagittal plane?
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Flexion and extention
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Describe kyphosis lordosis?
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Increased lumbar curve, increased curve of the thoracic spine, rounded shoulders and a forward tilted head.
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The middle deltoid functions as the prime mover for shoulder _____?
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Abduction
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Abduction and adduction occur in which planes?
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Frontal
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Approximately 60% of the body is composed of which major nutrient?
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Water
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low density lipoproteins (LDL) levels can be lowered by?
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Increased intake of monounsaturated and polyunsaturated fats
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Vitamins C & E, selenium, sulfur & beta carotene are nutrients classified as?
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Antioxidants
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Which nutrient best replenishes glycogen stores immediately after high intensity exercise?
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Baked potatoe
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Which of the following is true of a protein?
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It helps to synthesize hormones, enzymes and antibodies.
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What is the caloric content of an energy bar that has 22 grams of carbs, 8 grams of proteins and 8 grams of fat?
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220 calories
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