https://padlet.com/jh329240/372t7228jxo4 All about the different body systems that humans have. en-us 2019-02-28 02:17:18 UTC 2025-11-08 15:38:22 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Thunder.png jh329240 https://padlet.com/jh329240/372t7228jxo4/wish/336232618 Network of cells, tissues, and organs that coordinate your body’s defenses against any threats to your health. It relies upon millions of defensive white blood cells also known as leukocytes, that originate in our bone marrow. These cells move into our bloodstream and the lymphatic system, which is a network of vessels which helps clear bodily toxins and waste. There are between 4,000 and 11,000 in every microliter of blood. Leukocytes screen the blood, tissues, and organs for suspicious signs. This system relies on cues called antigens which are molecular traces on the surface of pathogens and other foreign substances to betray the presence of invaders. There are two main types of leukocytes; Phagocytes and lymphocytes. Phagocytes trigger the immune response by sending macrophages and dendritic cells into the blood, and as the circulate they destroy and foreign cells they encounter by eating them. This allows phagocytes to identify the antigen on the invaders the just ingested and transmit this information to the lymphocytes. A group of these types of cells (call T-cells) go insearch of infected body cells to quickly kill them. B-Cells and helper T-Cells use the information gathered from the unique antigens to start producing proteins called antibodies, which each antigen has an antibody to match it and destroy the antigen. When cells are damaged they release chemicals into the body to heat it up, and slow down the production of the bacteria. Autoimmune diseases trick the body into thinking that other cells are the problem and some examples are arthritis, type 1 diabetes and multiple sclerosis.]]> 2019-02-28 02:19:17 UTC https://padlet.com/jh329240/372t7228jxo4/wish/336232618 jh329240 https://padlet.com/jh329240/372t7228jxo4/wish/336232726 Skin is the foundation of the integumentary system which also includes your hair, nails, and specialized glands and nerves. Skin is made of three layers, epidermis, dermis, and hypodermis. Skin has three main functions; protecting, regulating and sensing the world. Large pressure-sensitive skin components are called Merkel cells. These give you a sense of touch. Skin absorbs pressure and shock with flexible collagen that makes up most of its dermal layer. The epidermis is made up mainly of skin cells called keratinocytes that are completely replaced every few weeks.]]> 2019-02-28 02:19:45 UTC https://padlet.com/jh329240/372t7228jxo4/wish/336232726 jh329240 https://padlet.com/jh329240/372t7228jxo4/wish/336625018 Water, Carbohydrates, Proteins, Fats, Minerals, and Vitamins.]]> 2019-02-28 20:13:54 UTC https://padlet.com/jh329240/372t7228jxo4/wish/336625018 jh329240 https://padlet.com/jh329240/372t7228jxo4/wish/336626090 You eat food in your mouth, saliva breaks it down, it then moves down your esophagus, ending up in your stomach. Peristalsis is the involuntary contracting of your stomach to break down food. In the stomach gastric juices break down the food like an enzyme. Digestive juices break down your food into a semi-liquid mixture called chyme. The remainder of food is then broken down in the small intestine, or more specific, the duodenum.]]> 2019-02-28 20:15:58 UTC https://padlet.com/jh329240/372t7228jxo4/wish/336626090 jh329240 https://padlet.com/jh329240/372t7228jxo4/wish/336655352 Absorption is the process by which nutrients move out of the digestive organs and into circulatory and lymphatic systems y tes, that originate in our bone marrow. These cells move into our bloodstream and the lymphatic system, which is a network of vessels which helps clear bodily toxins and waste. There are between 4,000 and 11,000 in every micro liter of blood. Leukocytes screen the blood, tissues, and organs for suspicious signs. This system relies on cues called antigens which are molecular traces on the surface of pathogens and other foreign substances to betray the presence of invaders. There are two main types of leukocytes; Phagocytes and lymphocytes. Phagocytes trigger the immune response by sending macrophages and dendritic cells into the blood, and as the circulate they destroy and foreign cells]]> 2019-02-28 21:28:51 UTC https://padlet.com/jh329240/372t7228jxo4/wish/336655352 jh329240 https://padlet.com/jh329240/372t7228jxo4/wish/336655902 These types of cells (call T-cells) go in search of infected body cells to quickly kill them. B-Cells and helper T-Cells use the information gathered from the unique antigens to start producing proteins called antibodies, which each antigen has an antibody to match it and destroy the antigen. When cells are damaged they release chemicals into the body to heat it up, and slow down the production of the bacteria. Autoimmune diseases trick the body into thinking that other cells are the problem and some examples are arthritis, type 1 diabetes and multiple sclerosis.]]> 2019-02-28 21:30:39 UTC https://padlet.com/jh329240/372t7228jxo4/wish/336655902 jh329240 https://padlet.com/jh329240/372t7228jxo4/wish/336656366 2019-02-28 21:32:23 UTC https://padlet.com/jh329240/372t7228jxo4/wish/336656366 jh329240 https://padlet.com/jh329240/372t7228jxo4/wish/336656447 2019-02-28 21:32:41 UTC https://padlet.com/jh329240/372t7228jxo4/wish/336656447 jh329240 https://padlet.com/jh329240/372t7228jxo4/wish/337051685 Hormones are chemicals released in one part of the body that travel through the bloodstream and affect the activities of target cells. Hormones are made in the endocrine gland.]]> 2019-03-01 21:53:39 UTC https://padlet.com/jh329240/372t7228jxo4/wish/337051685