Deck 18: Locomotion: Solid Surface

Question 1

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

A) abduction, flexion, medial rotation
B) horizontal adduction, abduction
C) medial rotation, horizontal adduction
D) lateral rotation, flexion

Answer 1

medial rotation, horizontal adduction

Question 2

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?

A) reach highest velocity at the same time
B) distal segments reach higher velocity than proximal segments
C) proximal segments reach higher velocity than distal segments
D) segments should move through a large range

Answer 2

distal segments reach higher velocity than proximal segments

Question 3

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

A) 1, 2
B) 1, 2, 3
C) 1, 2, 3, 4
D) 1, 2, 4
Short Answer Questions

Answer 3

1, 2, 4
Short Answer Questions

Question 4

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

A) hand
B) forearm
C) upper arm
D) trunk

Question 5

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

Question 6

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

A) 1, 2, 5
B) 1, 4, 6
C) 2, 3, 4
D) 4, 5, 6

Question 7

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

A) air resistance
B) length of lever
C) mass of the implement
D) speed of application of force

Question 8

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

A) sequential
B) simultaneous
C) combination
D) concurrent

Question 9

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

Question 10

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

A) be as close to the axis of rotation as possible
B) have a low angular velocity
C) have a low linear velocity
D) be as far from the axis as possible

Question 11

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

Question 12

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

A) 1, 3
B) 1, 4
C) 2, 3
D) 2, 4

Question 13

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

A) softball pitch
B) golf swing
C) tennis drive
D) bowling delivery

Question 14

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.

Question 15

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