Human body consists of complex systems, one of which is excretory system. Excretory system removes waste of metabolism from our body. Some metabolisms happen in human body, such as food and drink processing. Metabolism produces waste that should be released from our body because it is poisonous to the body, e.g. urine and carbon dioxide. … Read more
Human is completed with reproductive system since they were born. But, the system does not work until they have been a teenager. When they are teenagers, man and woman start to produce specific cell that is called gametes. If both cells (gametes from the man and woman) meet and fuse, it will form a zygote … Read more
Human gugup system is composed of sensory receptor of the sense (nerves which are located in the five senses), stimulus transmitter that transmits stimulus to the nerve center (sensory nerver), the central nervous which sorts and interprets the stimulus information, and motor nerve that transmits message from central nerve to effectors. Human Nervous System Read: … Read more
Basically, there are two kinds of body movements, conscious movements and reflex. Conscious body movement is coordinated by the brain, e.g. when someone is bitten by insect, he/she will know there is a stimulus on his/her skin that comes from out of the body. This stimulus is received by nerve receptor on the skin. The … Read more