Ap2 Urinary
Terms : Hide Images [1]
| Paired Kidneys, Ureters, urinary bladder, uretha | ||
| Bean shaped Organs, lots of blood flow, production of urineyou have two but could accomplish the job with 1. Removes Waste, regulate BP, blood ph and RBR production | ||
| For urine to travel to bladder. Consists of three layers = Mucosa (in contact with urine), muscularis, advantitia (stretchy allows change of shape. | ||
| Collapsible muscular sac that stores urine, same three layers = mucosa, muscularis, advantitia. | ||
| Urethra | ||
| Thing walled muscular tube, takes urine from bladder out of body. | ||
| You dont have control of this. SMOOTHE musc;e, prevents urine from leaking between voidings. | ||
| you CAN control this. Skeletal muscle, under voluntary control. | ||
| Functional structural unit of kidney. On the surface of kidney. millions of them! | ||
| 1 part of nephron == glomerulus surrounded by bowmans capsule.. knot of fenestrated (they holes that leak) capillaries. | ||
| Outer wall lined by simple Squamous Epithelium | ||
| Foot cells -- All around inner surface, they hug the capillary. | ||
| Narrow gaps between the podocytes. | ||
| wallas consist of simple cubodial epithelium with microvilli on top, lots of mitochondria | ||
| descending and ascending loops that consists of thing and thick segments. | ||
| Distal portion of loops. freely permeable to water.Simple Squamous | ||
| Portion of ascending loops that has simple cuboidal. impermeable to water and solutes (water CANNOT move) | ||
| empties into collecting ducts ( collect urine from many nephrons) | ||
| COllect urine from nephrons. They run through medullary pyramids and end in ureters. | ||
| Absorb Solutes and water from tubules. | ||
| Renal Arteris --> Branch into Sm. Arteries -->Afferent Arterioles -->Glomerulus --->Efferent Arterioles -->Peritubuilar Capallaries (exchange O2) -->Rein Veins (deoxygenated) | ||
| 1. Glomerular FIltration, 2. Tubular Reabsorption, 3. Tubular Secretion | ||
| Increases Na+ in plasma ----> Sensed by osmoreceptors in hypothalamus --->stimulates release of DH by post pituitary ---> in kidney, ADH causes more water to be retained by collecting ducts ---->increases blood Vulume, decreases Na+ ---->Negative feedback | ||
| 95% Water, 5% solutes | ||
| COntrolling blood PH, removal of excess K+, elimination of undesired substances, Disposing of substances in filtrate. | ||
| permeable to water but not solutes | ||
| impermeable to water | ||
| Involves specific ATP carrier, transports material to interstitial space | ||
| Diffusion, faciltated diffusion and osmosis. |