C renal cortex d renal vein e renal columns f calyces

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C) renal cortex D) renal vein E) renal columns F) calyces G) renal (medullary) pyramids 120) 121) 122) 123) 124) 125) 126) Identify these organs of the urinary system with their associated descriptions: 127) Tube that drains urine from the kidney to the urinary bladder Answer: C 128) Muscular sac suitable for temporary urine storage Answer: A 129) Transports urine and sperm in males Answer: B A) urinary bladder B) urethra C) ureter 127) 128) 129) 27
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130) Contains three layers of smooth muscle known as the detrusor muscle Answer: A 131) Contains an area called the trigone formed by the openings of the ureters and urethra Answer: A 132) Micturition reflex causes this organ to go into contractions Answer: A A) urinary bladder 130) 131) 132) ESSAY. Write your answer in the space provided or on a separate sheet of paper. 133) Explain how tubular reabsorption and tubular secretion are nearly opposite processes. Answer: Tubular reabsorption is the process by which the body reclaims substances within the filtrate that it wants to keep. Most reabsorption is an active process using membrane carriers. Substances that are typically reabsorbed include amino acids, glucose, and ions. Most reabsorption occurs in the proximal convoluted tubules. Tubular secretion is the opposite process. With secretion, substances such as hydrogen ions, potassium ions, and creatinine are removed from the peritubular capillaries into the tubules to be eliminated in urine. 134) Describe the normal characteristics of freshly - voided urine in a healthy adult. Answer: Urine is a pale, straw - colored liquid that progressively becomes a darker yellow color as it becomes more concentrated. The yellow color is a result of the presence of urochrome pigment, a by - product of hemoglobin breakdown. Urine is more concentrated than water with a specific gravity that ranges from 1.001 at its most dilute to l.035 at its most concentrated. Urine is sterile and slightly aromatic. Urine often has an acidic pH of around 6 but can be either acidic or basic depending on metabolism or diet. Urine normally contains water, sodium and potassium ions, urea, uric acid, creatinine, ammonia, and bicarbonate ions, as well as other ions that the body needs to dispose.
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