Biomechanics

Question 1

What is a contraction that occur as the muscles shortens?

Answer 1

Contractions

Question 2

The foot becomes a “rigid lever” for push-off when it is in what position?

Answer 2

Supination

Question 3

How many degrees of freedom does the knee have?

Answer 3

2

Question 4

How many degrees does the scapula contribute to shoulder abduction?

Answer 4

60

Question 5

What role does the quadriceps musculature assume during active knee extension against gravity?

Answer 5

Agonist

Question 6

What lever system is most common in the body?

Answer 6

Third

Question 7

What class lever does the gastrocnemius use during plantar flexion?

Answer 7

second

Question 8

Momentum is created by

Answer 8

Mass

Velocity

Question 9

A sprinter who is in the “ready” position at the start of the race has a lot of potential energy. What is his potential energy converted into as he takes off when the gun is heard?

Answer 9

Thermal

Question 10

Which of the following describes the plane and axis for cervical rotation?

Answer 10

Horizontal

Vertical

Question 11

What is the maximum number of degrees of freedom a joint can possess?

Answer 11

Saddle

Question 12

Shoulder abduction occurs in the___plane and moves around a___axis

Answer 12

Frontal

Medial-lateral

Question 13

Hip internal/external rotation occurs in the___plane around a___axis?

Answer 13

Horizontal

Vertical