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.

Complete the table to show the function of the organs. Name of organ Function Heart Bladder Diaphragm

Name of organ Function Heart The human heart is a muscular organ located in the chest cavity, slightly towards the left. The main functions of circulatory organ in the circulatory system is heart, it helps to pump blood to all the body parts. Bladder The process of removal of unwanted wastes from the body is called excretion. Kidneys are the excretory system that perform the essential function of removing waste products from the blood and regulating the water fluid levels. It helps to remove waste in the form of urine. It is stored in the bladder, hence, it is called as the temporary storage reservoir for urine. Diaphragm A thin skeletal muscle that sits at the base of the chest is called diaphragm. During inhalation, it contracts and flattens which creates a vacuum effect that pulls air into the lungs. When you exhale, the diaphragm relaxes and the air is pushed out of lungs.