Module_07_Lab_Worksheet_05202018.docx

Concentrated urine little water that will have a dark

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concentrated urine (little water) that will have a dark yellow appearance and strong “ammonia” smell. If the body is in a hydrated state, the collecting duct will reabsorb less water leading to diluted urine that will be a faint yellow to clear color. This process will also assist in the regulation of blood volume and blood pressure along with electrolyte concentration. This filtered fluid from the nephrons and collecting duct, referred to as urine, is collected in the ureters which transport the urine from the kidneys to the bladder no matter what position the body is within. The bladder collects and stores the urine and is lined with smooth muscle that contracts to expel the urine out of the bladder into the urethra. The urethra connects the bladder to the external environment of the body. The length of the urethra within females is much shorter compared to males, which leads to increased risk of bladder infections. Urinalysis is an array of tests performed on a urine sample from a dipstick urine test strips that measure various concentrations and levels of substances that could be found in blood such as glucose, proteins, nitrates and so forth. Another common urine test is light microscopy, examining a urine sample under a light microscope to view the concentration of blood cells, bacteria cells and any other solid structure that may be found in a urine sample. Materials · Urinalysis test strips · Sterile urine cups · Microscopes and microscope slides Pre-Lab Evaluation Questions The pre-lab evaluation questions must be answered prior to lab and demonstrated to your lab instructor. You must read through the assigned chapter readings, lab introduction, objectives, overview and procedure to answer these questions. Please cite your work for any reference source you utilize in answering these questions. 1. Describe the blood flow to the kidney and within including the renal artery and vein, interlobar arteries, cortical radiate arteries and afferent arteries? The renal arteries branch off of the abdominal aorta and supply the kidneys, The Renal supply begins here. The renal arteries split into several smaller arteries upon entering the kidneys. Each of these smaller arteries split
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further into multiple interlobar arteries and enter the renal columns which supply the renal lobes. The interlobar arteries divide at the junction of the renal cortex and medulla to form the arcuate arteries. These bow shaped arteries follow along the base of the medullary pyramids. Cortical radiate arteries move outward from the arcuate arteries and branch into numerous afferent arterioles and then to the capillaries supplying the nephrons. From here the renal veins follow a similar pathway out of the kidneys and back to the renal veins which then dump into the inferior vena cava (Betts, 2017).
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