Exam 18: Locomotion: Solid Surface

Why is it difficult to throw a ball while treading water (as in water polo)?

Which best describes the striking segment when hitting a ball with as high a velocity as possible?

Why is it better to contact the ball with the elbow fully extended rather than flexed in executing a hard tennis serve?

Which of the following muscles will contract to produce the trunk rotation to the left that is necessary for a right hand throw? 1) right external oblique 2) left external oblique 3) right internal oblique 4) left internal oblique

Which of the following factors has the least effect on the development of momentum in a striking implement?

The wind-up (preparatory phase) is a very important part of the forceful throwing motion. Give a neuromuscular reason and at least one mechanical reason why this is true.

What is the movement in the shoulder (glenohumeral) joint in the delivery and beginning of the follow through of an overarm throw?

Which muscles are responsible for the primary action of the humerus in the shoulder joint motion during the propulsive phase of the overarm throw? 1) anterior deltoid 2) subscapularis 3) latissimus dorsi 4) pectoralis major 5) posterior deltoid 6) teres major

Throw-like motions are classified as being ____ in nature.

Why should the pelvic girdle rotate before the arm comes through in executing a hard throw?

What are the prime movers in giving top spin to the ball in a tennis stroke with strong forearm pronation? 1) pronation teres 2) pronator quadratus 3) biceps brachii 4) brachialis

Which of the following does not illustrate an underarm throwing pattern?

Why can you generate a better throw if you move each of the body parts involved in sequence rather than simultaneously?

Which of the following best describes the desired action of the segments contributing to the motion in striking activities where maximum velocity of the implement is desired?

Which segment should be the last to move and have the highest velocity in a throw?