Physiology Notes PDF

# Physiology - Study of function of the human body. - The internal environment must be regulated to become constant. ## Role of systems in homeostasis: - All body systems share in maintaining homeostasis for the body except the reproductive system. ## Why? - For homeostasis to the human cells....

# Physiology - Study of function of the human body. - The internal environment must be regulated to become constant. ## Role of systems in homeostasis: - All body systems share in maintaining homeostasis for the body except the reproductive system. ## Why? - For homeostasis to the human cells. ## Regulation: - The activities in the body are regulated by : 1. Nervous system 2. Endocrine system ## Homeostasis: - توازن الجسم ## Endocrine: - غدد ص # One: Introduction ## Transport Across the Cell Membrane: ### Passive Transport: - No carrier. - No energy. - Moves from high concentration to low one. - Not Saturable. - Concentration is gradient. - Lipid soluable moves through the cell membrane more easily than water soluble drugs. ### Facilitated Diffusion: - Needs carrier, like protein. - Sort of passive. ### Active Transport: - Needs carrier. - Needs energy (ATP). - Moves from low concentration to high one. - Against the concentration gradient. - Saturable. - Transport larger sizes. ### Endocytosis: - Goes inside the cell through the cell membrane. ### Exocytosis: - Gets out of the cell through the vesicles. ## Saturable: - مشع ## Facilitated Diffusion: - نقل سهل ## Endocytosis: - بلعمة ## Exocytosis: - اخراج ## Vesicles: - حويصلات