Question

The force generated by the muscles that acts as alan ----(P)---- is used to
carry out movement through joints, where the joint acts as alan
---(Q)---
In the above, the 'P' and 'Q' respectively are
(A) Effort: Fulcrum
(B) Fulcrum; Effort
(C) Resistance: Effort
(D) Effort: Resistance​

Answer 1

Answer:

Levers in our body are formed from bones, joints and muscles.

A lever consists of:

a rigid structure (bone)

a force acting upon it (muscle) to produce a turning movement (angular motion)

a fulcrum which is a fixed point (joint)

a load or resistance that is placed on the rigid structure (weight of body part being moved and anything that it is carrying)

Explanation:

Answer 2

(A) P is Effort and Q is Fulcrum.

The lever system operates in our body. There are three basic components of a lever:

• Load/ Resistance: The load is the muscle/ body part that has to be moved.
• Fulcrum: It is the point about which movement occurs.
• Effort: It is work done by the muscles of our body to bring about the movement.

Commonly, the body parts to be raised or moved act as a load, the joints about which the movement is brought about act as a fulcrum, and the muscles that actually generate the necessary force act as effort in the human body.

There are three classes of the lever system depending on the positions of the resistance, fulcrum, and the effort with respect to each other.

So, the force generated by the muscles that act as an Effort is used to

carry out movement through joints, where the joint acts as a Fulcrum.