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1)what do we learn in Physiology? 2)starting from a simple cell how body forms ? 3)What is the function of cell wall anda WhatsApp is the structure molecules? (4) what are mechanisms of cellular wall transportation ? 5) what node iş the starting point of heart beat?
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1) In Physiology, we learn about the functions and processes of the human body and how various systems work together to maintain homeostasis. This includes studying the mechanisms of different organs and systems, such as the cardiovascular system, respiratory system, nervous system, and more.2) The body forms from a simple cell through a process called development. Starting from a fertilized egg, the cell undergoes multiple rounds of cell division and differentiation to form various tissues and organs. This process involves the activation of specific genes and signaling pathways that guide the formation of different cell types and tissues.3) The cell wall is a rigid structure found in plant cells and some other organisms. Its primary function is to provide structural support and protection to the cell. It helps maintain the shape of the cell and prevents it from bursting in hypotonic solutions. The cell wall is composed of cellulose, hemicellulose, and pectin, which are polysaccharide molecules.4) The mechanisms of cellular wall transportation involve the movement of substances across the cell wall. This can occur through passive transport, such as diffusion or facilitated diffusion, where substances move from areas of higher concentration to lower concentration. Active transport, on the other hand, involves the use of energy (ATP) to move substances against their concentration gradient. Transport proteins, such as channels and carriers, play a crucial role in facilitating the movement of molecules across the cell wall.5) The starting point of the heartbeat is the sinoatrial (SA) node, also known as the natural pacemaker of the heart. The SA node generates electrical impulses that spread through the walls of the atria, causing them to contract and pump blood into the ventricles. From there, the impulses travel to the atrioventricular (AV) node, which acts as a gateway between the atria and the ventricles. The electrical impulses then travel through the bundle of His and the Purkinje fibers, ultimately leading to the coordinated contraction of the ventricles and the pumping of blood out of the heart.