010-111 practice questions, page 8 of 14, with answer review and explanations.
Question 36
From a seated position, with dumbbells to the sides, raising the dumbbells laterally to shoulder level with elbows slightly flexed, exercises primarily the _______:
bicep brachii and latisimus dorsi
posterior deltoid
anterior deltoid and triceps brachii
middle deltoid.
Question 37
What is the major muscle used to flex the hip joint?
Vastus lateralis
Iliopsoas
Biceps femoris
Gluteus maximus
Question 38
A subject with elbows held at 90 degrees of flexion is handed a 150 lb (68.1kg) barbell. Even though he exerts maximal tension, the barbell causes the joint angle to increase to 170 degrees. Which one of the following describes the muscle action during the extension?
Isotonic concentric
Isotonic eccentric
Isokinetic concentric
Isokinetic eccentric
Question 39
Type II muscle fibers:
Have a high capacity to generate energy through the electron transport system.
Have a high capacity to generate energy from fat.
Are recruited at a higher percentage of maximum force than Type I fibers.
Have high endurance capabilities.
Question 40
Which of the following is a normal blood pressure (BP) response to aerobic exercise?
Both systolic and diastolic BP increase proportionately to increases in workload.
Systolic BP increases and diastolic BP decreases.
Systolic BP increases proportionately to increases in workload and diastolic BP remains unchanged or decreases slightly.
Systolic and diastolic BP both decrease at the onset of exercise, then increase in proportion to the increase in intensity.