osmoreceptor cells detect _____?_____ concentration in the blood 06.01 Excretory System Assignment Directions: Fill-in the blanks on slide 1 (the order is correct). Fill-in the blanks on slide 2 AND put the boxes in the correct order. _____?_____ – osmoreceptor cells detect _____?_____ concentration in the blood low salt high salt No thirst No ADH released Stimulates: 1. _____?_____ centers 2. _____?_____ gland - told by the hypothalamus to secrete _____?_____ into the blood _____?_____ - goes to the kidneys to extract water from the excretory system and put it back into the _____?_____

Urea travels in blood to the Renal tubule - Filtered fluid, or _____?_____, trickles along the renal tubule, where much of the water, glucose, and salts are reabsorbed, ensuring the blood maintains its correct composition. The toxic urea is left behind. Renal capsule - The central part holds a bundle of capillaries called the _____?_____. Narrow vessels create an area of relatively high pressure. This forces a lot of the fluid part of the blood through the walls of the glomerulus _____?_____ and into the space inside the renal capsule. The fluid that passes through contains useful substances, such as glucose, water, and salts, as well as harmful _____?_____. But the blood cells and proteins are too large to pass through and remain in the capillary blood. So, therefore, the blood is selectively filtered as it passes through the glomerulus Liver – _____?_____ is formed here from the breakdown of proteins not required by the body Nephrons – _____?_____ areas in the kidneys (about a million per kidney). They are made up of 3 parts: Collecting duct - the remaining fluid then trickles into the collecting ducts which leads to the _____?_____ and drips into the _____?_____. Kidneys – urea removed and mixed with water and other removed substances to form _____?_____ Urea travels in blood to the