Human anatomy chapter 24

Which vessels in the nephron function in filtration?
glomerular capillaries
The visceral layer of the glomerular capsule __________.
clings to the glomerulus, consists of branching cells call podocytes, and plays an important role in the formation of filtrate
Which structure(s) is/are confined to the renal medulla?
The thin segments of the nephron loop (loop of Henle.)
Why is blood pressure in the glomerulus higher than in other capillary beds?
Arterioles are high-resistance blood vessels, and the efferent arteriole is narrower than the afferent arteriole.
Renal corpuscles __________.
consist of a glomerulus and a glomerular capsule
What happens in tubular resorption?
Most nutrients, water, and essential ions are returned to the blood renal capillaries.
Which of these statements concerning peritubular capillaries is FALSE?
They are low-pressure porous capillaries.
– They are adapted for secretion.
They are continuous from efferent arterioles draining the cortical glomeruli.
They absorb solutes and water from the tubule cells after these substances are resorbed from filtrate.
Knot of capillaries that directs blood into the efferent arteriole.
glomerulus
The medial concave cleft in which vessels, ureters, and nerves enter/leave the kidney.
hilum
85% of nephrons are described by this term that relates to their location in the kidney.
cortical
The descriptive term for the location of the kidneys relative to the abdominal cavity.
retroperitoneal
Which of the following is not normally found in urine?
glucose
Vessels and nerves enter and leave the kidney through the
medial hilum.
The most superficial layer of the kidney is the
cortex
How much of the fluid filtered by the kidney actually becomes urine?
1%
Before it enters the ureter, urine collects in the
renal pelvis
Which of the following is not part of the filtration membrane?
granular cells
Which of the following processes does not participate in the production of urine in the kidney?
evaporation
The glomerular capsule and the glomerular capillaries together make up the renal corpuscle.
true
A network of peritubular capillaries surrounds the convoluted tubules and nephron loop for the purpose of filtration.
false
Cortical and juxtamedullary nephrons can be distinguished by the absence of a vasa recta in the cortical nephrons.
true
Where does blood flow immediately after it leaves the glomerulus in the renal corpuscle?
efferent arteriole
Which of these sequences correctly traces arterial blood as it flows from the renal artery to the renal cortex?
segmental artery, interlobar artery, arcuate artery, cortical radiate artery, afferent arteriole, glomerulus, efferent arteriole, peritubular capillary
Which of these events occurs after the posterior pituitary gland secretes antidiuretic hormone (ADH)?
The collecting ducts and distal convoluted tubules become more permeable to water, which results in additional water being resorbed into blood vessels from the filtrate.
Region of the distal tubule that monitors concentration of the filtrate.
macula densa
Blood vessel that contains granular cells involved in blood pressure regulation.
afferent arteriole
The function of the collecting duct is to
determine the final volume and concentration of urine.
Renin is produced in
the granular cells.
In the juxtaglomerular apparatus, the macula densa belongs to the
terminal nephron loop.
An increase in the permeability of collecting tubule cells to water is due to
an increase in the production of ADH.
What is the function of the macula densa?
These are specialized cells of the DCT that act as chemoreceptors for monitoring ion concentrations in the filtrate.
The ureters enter the bladder obliquely at the anterolateral corners.
false
In what way is the histology of the ureters the same as that of the urinary bladder?
Their luminal epithelium is transitional epithelium.
Contraction of this muscle forces urine from the bladder.
detrusor
The mucosal folds in the bladder (rugae)
have the same basic function as transitional epitheliumaccommodating stretch as the bladder fills.
Which of the following statements about the urinary bladder is false?
In females, the bladder lies posterior to the uterus but anterior to the rectum.
The epithelium lining the urinary bladder that permits distension is
transitional
In females, the urinary bladder lies anterior to the vagina and uterus.
true
The urinary bladder, when empty, lies within both the abdominal and pelvic cavities.
false
The name of the inferior of the three openings in the trigone of the bladder is the
internal urethral orifice.
The longest of the three parts of the male urethra is the
spongy urethra.
Which urethral sphincter is innervated by somatic (voluntary) motor neurons?
external urethral sphincter
The oblique entry of the ureters into the bladder __________.
prevents backflow of urine into the ureters from the urinary bladder
The internal urethral sphincter is composed of smooth muscle and is under involuntary control.
true
The micturition center is located in the
pons of the brain stem.
x

Hi!
I'm Heidi!

Would you like to get a custom essay? How about receiving a customized one?

Check it out