Unit 3 HW Questions Flashcards
What defines the trigone of the urinary bladder?
The ureter entrances and the opening to the urethra define the trigone of the urinary bladder, which is found in both males and females.
Which of the following would NOT inhibit micturition?
detrusor contraction
Which hormone(s) is/are required for facultative water reabsorption in the collecting ducts?
Antidiuretic hormone (ADH) stimulates an increase in the number of aquaporins used by the collecting duct to reabsorb water.
Vasa recta blood osmolality is critical to maintaining the countercurrent mechanisms of the nephron. Where is vasa recta blood osmolality the highest?
Vasa recta blood osmolality is at its highest where the filtrate and interstitial fluid are the highest, which is in the deep medulla.
What hormone promotes active tubular secretion of potassium ions and reabsorption of sodium ions in the distal convoluted tubule (DCT) and collecting ducts?
Aldosterone
In which kidney region are all renal corpuscles located?
All renal corpuscles are located in the renal cortex. The glomerular capsule wraps around the glomerulus, whose blood source is the cortical radiate artery.
Which capillary bed produces filtrate?
The glomerulus (capillary bed) in the glomerular capsule produces filtrate due to the high fluid pressure within the vessels
Which of the following is NOT a characteristic of the cortical nephrons?
Their nephron loop is closely wrapped with vasa recta.
Which male reproductive structure is NOT correctly matched with its function?
The epididymis is where sperm is stored and matured, not where its produced
Which gland does NOT match its type of secretion?
testis: clear, viscous mucus that neutralizes urine. (The bulbo-urethral gland produces a clear, viscous mucus that neutralizes urine)
The number of chromosomes in a human gamete is __________; this is referred to as a __________ chromosome number.
23; haploid
Which of the following female sex hormones is most responsible for estrogenic effects?
estradiol
Which structure(s) of the female’s external genitalia has/have erectile tissue?
The clitoris
The __________ is shed during each menstruation and is then regenerated by the __________.
functional layer of the endometrium; basal layer of the endometrium
Why does only one egg, rather than four eggs, develop during oogenesis, given that spermatogenesis results in four sperm formed from one stem cell?
Unequal cytoplasmic division ensures that a fertilized egg has ample nutrients for its journey to the uterus.
