ساينس الصف السادس الإبتدئي الفصل الدراسي الاول ساينس سادسة ابتدائي – ترم أول In This part we will study : The peripheral nervous system Second: It is the nerves that emerge from the central nervous system (brain & spinal cord) The function: 1) It delivers sensory information and kinetic responses between the central nervous system and all body parts. 2) It is responsible for the reflexes. The peripheral nervous system consists of: Cranial nerves 12pairs of nerves emerges from the brain. Spinal nerves 31pairs of nerves emerges from the spinal cord. – When the body is subjected to external stimuli such as light, heat, and smell, it makes an involuntary response by the nervous system, this is called the reflex action. The reflex action: It is an automatic (spontaneous) response done by the body when it is exposed to an external stimulus. لمتابعة مستر احمد الباشا وكل ما يخص الساينس : جروب الفيس بوك http://bit.ly/2Of1mcN صفحة الفيس بوك http://bit.ly/2Gq5xMo بالتوفيق مستر احمد الباشا