السلام عليكم ورحمة الله : تحية طيبة
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Circulatory systemالجهاز الدوري
The system that contains the heart and the blood vessels and moves blood throughout the body. This system helps tissues get enough oxygen and nutrients, and it helps them get rid of waste products. The lymph system, which connects with the blood system, is often considered part of the circulatory system.
nervous system الجهاز العصبي
One of eleven major body organ systems in animals; coordinates and controls actions of internal organs and body systems, receives and processes sensory information from the external environment, and coordinates short-term reactions to these stimuli
excretory system الجهاز الاخراجي
One of eleven major body systems in animals; regulates the volume and molecular and ionic constitution of internal body þuids and eliminates metabolic waste products from the internal environment.
neural tube الانبوب العصبي
A tube of ectoderm in the embryo that will form the spinal cord.
notochord الحبل الظهري
In chordates, a cellular rod that runs the length of the body and provides dorsal support. Also, a structure of mesoderm in the embryo that will become the vertebrae of the spinal column. The stiff rod-like structure that all members of the Phylum Chordata develop at some stage during their life.
diffusion الانتشار
The spontaneous movement of particles from an area of higher concentration to an area of lower concentration.
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