Exam Review
- What is the best explanation for the microvilli on the apical surface of the proximal convoluted tubule (PCT)?A)Their movements propel the filtrate through the tubules.B)They move materials from the filtrate to the blood plasmaC)They increase the surface area and allow for a greater volume of filtrate components to be reabsorbed.D)They hold on to enzymes that cleanse the filtrate before reabsorption.E)They increase the amount of surface area that comes in contact with the blood's plasma to help actively excrete toxins.
- Which of the following is NOT associated with the renal corpuscle?A)a podocyteB)an efferent arterioleC)a fenestrated capillaryD)glomerular capsuleE)a vasa recta
- The urinary bladder is composed ofA)transitional ETB)simple squamous ETC)simple cuboidal ETD)stratified squamous ETE)pseudostratified columnar ET epithelium.
- The kidneys are stimulated to produce reninA)when the peritubular capillaries are dilatedB)when the pH of the urine decreasesC)by the increase in blood pressureD)when the specific gravity of urine rises above 1.10E)by a decrease in the blood pressure
Exam Review
- Which of the choices below is NOT a function of the urinary system?A)helps maintain homeostasis by controlling the composition, volume, and pressure of bloodB)regulates blood glucose levels and produces hormonesC)maintains blood osmolarityD)eliminates solid, undigested wastes and excretes carbon dioxide, water, salts, and heat
- The renal corpuscle is made up ofA)Bowman's capsule and glomerulusB)the renal pyramidC)the descending nephron loopD)the kidney cortex and medullaE)the renal papilla
- The functional and structural unit of the kidneys is theA)collecting ductB)nephronC)capsular spaceD)nephron loopE)glomerular capsule
- The glomerular capsular space containsA)plasmaB)urineC)bloodD)filtrate
Exam Review
- The macula densa cells respond toA)antidiuretic hormoneB)changes in pressure in the tubuleC)aldosteroneD)changes in Na+ content of the filtrateE)renin concentration
- The fluid in glomerular capsule is similar to plasma except that it does NOT contain a significant amount ofA)hormonesB)plasma proteinC)glucoseD)electrolytes
- The function of angiotensin II is toA)decrease the production of aldosteroneB)decrease water absorptionC)decrease arterial blood pressureD)constrict arterioles and increase blood pressureE)increase the production of ADH
- Place the following in correct sequence from the formation of a drop of urine to its elimination from the body. 1. major calyx 2. minor calyx 3. nephron 4. urethra 5. ureter 6. collecting ductA)3, 6, 2, 1, 5, 4B)2, 1, 3, 6, 5, 4C)3, 1, 2, 6, 5, 4D)6, 3, 2, 1, 5, 4E)5. ureter
Exam Review
- Which of the following hormones acting on the collecting duct is most responsible for retaining sodium ions in the blood?A)atrial natriuretic peptideB)parathyroid hormoneC)antidiuretic hormoneD)aldosteroneE)renin
- The factor that promotes filtrate formation at the glomerulus is theA)myogenic mechanismB)colloid osmotic pressure of the bloodC)capsular hydrostatic pressureD)glomerular hydrostatic pressure
- Except for potassium ions, tubular secretion of most unwanted substances occurs inA)theB)nephron loopC)proximal convoluted tubuleD)collecting ductE)glomerulus
- Which of the choices below is NOT a glomerular filtration rate control method?A)neural regulationB)hormonal regulationC)electrolyte levelsD)renal autoregulation
Exam Review
- Alcohol acts as a diuretic because itA)is not reabsorbed by the tubule cellsB)increases the rate of glomerular filtrationC)increases secretion of ADHD)inhibits the release of ADH
- All of the following things occur during meiosis I. Select the statement below that does NOT occur during meiosis I.A)The sister chromatids are separated from each other.B)Portions of maternal chromosomes crossover with equivalent portions of paternal chromosomes.C)The homologous chromosomes are separated from each other.D)A single diploid (2n) nucleus has become two haploid (n) nuclei.
- Which of the following statements is true of metaphase I of meiosis I?A)Joined homologous pair uniformly line up on the equatorial spindle with chromosome one at the top and chromosome 23 on the bottom.B)Tetrads align randomly on the spindle equator with all the maternal homologs on one side and all the paternal homologs on the opposite side.C)Homologous pairs align randomly on the spindle equator with a mix of paternal and maternal homologs destined for each of the daughter cells.D)The sister chromatids line up randomly on the spindle equator with some maternal and paternal chromatids on both sides of the equator.
- The dartos and cremaster muscles are important to the integrity of the male reproductive system. Which of the following best describes the role they play?A)They regulate the temperature of the testes.B)They contract to allow ejaculation.C)They contract to push sperm along the ductus deferens.D)They are responsible for penile erection.