chapter 27 questions Flashcards
What are the final products of meiosis?
four haploid cells that are each genetically different from the parent cell
Sperm are produced in the ___________ of the tests.
seminiferous tubules
Which organ of the male duct system runs from the scrotum into the pelvic cavity?
- ductus (vas) differs
Select the true statement regarding the male accessory glands.
The prostate encircles the urethra just inferior to the bladder.
Which cells surround and nourish developing sperm?
sustentocytes
Which hormone stimulates spermatogenesis and inhibits GnRH release from the hypothalamus?
testosterone
Which structure is the site where fertilization usually occurs?
ampulla of the uterine tube
The male scrotum is homologous to the female ________.
labia majora
Meiosis I complete in a __________ follicle just before ovulation.
vesicular
Select the statement that describes an event of the follicular phase of the ovarian cycle.
One follicle becomes the dominant follicle.
Which hormone prompts ovulation?
luteinizing hormone (LH)
What is the most common bacterial sexually transmitted infection (STI) in the United States?
Chlamydia
A site at which most of the tubular reabsorption occurs
Proximal convoluted tuble
Blood supply that directly receives substances from the tubular cells
peritubular capillaries
Site of filtrate formation
glomerulus
Site that drains the distal convoluted tuble
collecting duct
The mechanism that established the medullary osmotic gradient depends on the permeability properties of the
nephron loop
Which of the choices below are the most important hormone regulators of electrolyte reabsorption and secretion
angiotension 2 and aldosteron
The chief force pushing water and solutes out of the blood across the filtration membrane is
glomerular hydrostatic pressure
The juxtamedullary nephron is responsible for 80% of kidney filtration.
false
Glomerular Filtration Rate (GFR) is the amount of filtrate in all the renal corpuscles of both the kidneys per minute.
true
The Juxtaglomerular Apparatus (JGA) consists of the macula densa cells and the juxtamedullary cells.
false
Podocytes make up the parietal layer of the renal corpuscle.
false
During tubular reabsorption, water is removed from blood and returned to tubule.
false
The countercurrent mechanism results in dilute urine.
false
Blood flows from the interlobar arteries to the arcuate arteries to the interlobular arteries.
true
Arrange the four structures listed below into the order in which sperm pass from the testis to the urethral meatus.
1. ductus deferens
2. urethra
3. ejaculatory duct
4. epididymis
epididymis, ductus deferens,ejaculatory duct, urethra
The pituitary hormone that stimulates the Leydig cells to secrete testosterone is
ACTH
The special type of cell division required to produce gametes is called
meosis
What is the function of gonads?
produce gametes and produce hormones
The cells that are formed during spermatogenesis by the first meiosis are called
secondary spermatocytes.
Inward projections of the tunica albuginea, known as sepia, divide the testis into
lobules
