Several examples will be included here, including skin, mouth, stomach, pancreas, duodenum, and breasts. The mode of nutrition in which organisms make their own food by the process of photosynthesis. The process by which plants make their own food using raw materials banjo weed like sunlight, chlorophyll, water and carbon dioxide is called photosynthesis. The process of intake of nutrients like carbohydrates, fats, minerals, vitamins and proteins by an organism and also utilization of these minerals by the organism is called nutrition.

Most glandular structures are epithelial in origin, and many are folded and organised into recognisable glands with a central duct. Glands possessing a duct are exocrine glands ; the duct acts as a conduit into which secretions are released before being carried away to their sites of action. Exocrine glands include many of the digestive glands in the gut, sweat glands in the skin and mucus-producing glands in the mucous membranes of the mouth and reproductive tracts. The endocrine system is made up of glands and tissues that produce and secrete hormones to regulate and coordinate vital bodily functions. It also highlights the varying roles of hormones in regulating and coordinating physiological processes, as well as maintaining homoeostasis in the body.

Following the initial formation of the epithelial bud, ductal elongation occurs. This process undergoes mediation by a large group of molecular signals such as Netrin-1, TIMP1, amphiregulin, IGF1, and leukemia inhibitory factor. Several matrix metalloproteinases contribute assistance with basement membrane renewal and facilitate ductal elongation.

Collects and transports tissue fluid from the intercellular spaces in all the tissues, back to the veins in the bloodstream. Excretion is the process of removal of waste products from the body. The white blood cells make antibodies whereas red blood cells help in respiration. The ______blood cells make antibodies whereas________ blood cells help in respiration. The two types of transport system in human beings are blood circulatory system and lymphatic system.

Plants obtain nitrogen from the soil by inorganic salts like nitrites or nitrates in the form of organic compounds produced by bacteria using the atmospheric nitrogen. Carbon dioxide is reduced into carbohydrates like glucose by light energy utilizing the hydrogen and oxygen produced in the above step. The anus is the opening in the human body through which undigested food is thrown out. The anus is surrounded by sphincter muscles that are important in allowing control of stool. Peristaltic movement moves the food in the digestive system. Assimilation is the process in which digested food moves into the cells of the body.