Question 4 — You can perform these - Questions at the end of the chapter - Chapter 3 - Tissues in Action (Exploration)

Last updated at August 14, 2026 by

You can perform these two jumps (Fig. 3.21): Straight-leg jump — keep knees and ankles stiff. Normal jump — bend knees and ankles naturally. How did your ankle, knee and hip positions differ between the two jumps?
Question 4 — You can perform these - Tissues in Action - [Teachoo] - Questions at the end of the chapter
Straight-leg jump — joints stiff and straight
Hard landing (shock not absorbed)
Normal jump — ankle, knee, hip bend
Soft landing (shock absorbed)
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In the straight-leg jump the ankle, knee and hip stay stiff and almost straight, so the joints hardly bend and the landing feels hard.

In the normal jump the ankle, knee and hip all bend, letting the hinge joints fold and the ball-and-socket hip flex. This bending softens the landing and absorbs the shock.

Straight-Leg Jump vs Normal Jump
Straight-leg jump
Ankle, knee and hip stay stiff; the landing feels hard.
↓
Normal jump
Hinge joints fold and the hip flexes.
↓
Bending the joints absorbs the shock
Back to: 3.5 Types of Joints
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