Complete the table by writing 'contracts' or 'relaxes' to show the action of the muscles in the arm. Muscle Bending the arm Straightening the arm Biceps Triceps

Muscle Bending the arm Straightening the arm Biceps contracts relaxes Triceps relaxes contracts The movement of our body parts takes place by the contraction and the relaxation of the muscles. The two types of muscles are required for this process, one undergo contraction, and the other muscle helps in relaxation of the muscle. Example: the lower arm is moved upwards and contracts by biceps, and it moves downwards and get relax by triceps. Hence, a pair of muscles are required to move the lower arm up and down.

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Cambridge Lower Secondary Science Stage 7 : Workbook>Chapter 1 - Living Things>Exercise 3

Aidan Gill, Heidi Foxford and, Dorothy Warren Solutions for Chapter: Living Things, Exercise 3: Exercise 3

Author:Aidan Gill, Heidi Foxford & Dorothy Warren

Aidan Gill Science Solutions for Exercise - Aidan Gill, Heidi Foxford and, Dorothy Warren Solutions for Chapter: Living Things, Exercise 3: Exercise 3

Attempt the free practice questions on Chapter 1: Living Things, Exercise 3: Exercise 3 with hints and solutions to strengthen your understanding. Cambridge Lower Secondary Science Stage 7 : Workbook solutions are prepared by Experienced Embibe Experts.