It is a discharge of the uterine lining and blood through the vagina. This happens every month.

Is the system that provides an area for the exchange of gases between the blood and the environment A.RESPIRATORY SYSTEM B. CIRCULATORY SYSTEM C. REPRODUCTIVE SYSTEM

Which of the following boys will experience? 1. enlargement of breasts 2. menstruation period 3. voice breaks and become deeper 4. production of ova

What body system is this? A.RESPIRATORY SYSTEM B. CIRCULATORY SYSTEM C. REPRODUCTIVE SYSTEM

What body system is this? A.RESPIRATORY SYSTEM B. CIRCULATORY SYSTEM C. REPRODUCTIVE SYSTEM

What does the picture show? 1. fertilization 2. menstruation 3. puberty 4. respiration

What stage when a child experiences some changes to his or her body? 1. Puberty stage 2. childhood stage 3. adulthood stage

What blood defends the body against diseases? 1. white blood cells 2. red blood cells 3. plasma 4. platelets

What is the correct flow of air? 1. Nose – trachea – bronchi – alveoli 2. Nose – alveoli – trachea – bronchi 3. Alveoli – bronchi – trachea – nose 4. Trachea – nose – bronchi – alveoli

What body system is this? A.RESPIRATORY SYSTEM B. CIRCULATORY SYSTEM C. REPRODUCTIVE SYSTEM

A component of the blood that carries oxygen. 1. Plasma 2. red blood cells 3. white blood cells 4. artery

Is the system that enables human to produce offspring. A.RESPIRATORY SYSTEM B. CIRCULATORY SYSTEM C. REPRODUCTIVE SYSTEM