5 Written questions
3 Matching questions
- a Generally, most water reabsorption in a nephron occurs at the:
nephron loop and is called obligatory water reabsorption.
nephron loop and is called facultative water reabsorption.
proximal convoluted tubule and is called obligatory water reabsorption.
proximal convoluted tubule and is called facultative water reabsorption.
- b Both the proximal convoluted tubule and the distal convoluted tubule reside in the cortex of the kidney.
- c The capillaries of the glomerulus differ from most other capillary networks in the body because they:
carry only deoxygenated blood.
drain into an arteriole instead of a venule.
contain no endothelium.
absorb nutrients from the glomerular capsule.
5 Multiple choice questions
- Careful measurements of GFR are made by injection of _______, but approximations of GFR can be made more simply by measuring renal plasma clearance of _________.
creatine phosphate, insulin
insulin, creatine phosphate
- How are the processes of reabsorption and secretion related?
They both involve movement of material from the blood into the tubular fluid.
Materials move in opposite directions: reabsorption moves materials into the blood, whereas secretion removes them from the blood.
Materials move in opposite directions: secretion moves materials into the blood, whereas reabsorption removes them from the blood.
They both involve movement of material from the tubular fluid into the blood.
This figure shows a renal corpuscle. The two structures indicated by number 3 collectively form the:
- ANP is a hormone that causes:
constriction of the afferent arterioles and release of renin.
constriction of the afferent arterioles and inhibition of renin release.
dilation of the afferent arterioles and release of renin.
dilation of the afferent arterioles and inhibition of renin release.
- The endothelium of the glomerulus is made up of _________ capillaries.
5 True/False questions
b → Dehydration results in:
increased ADH secretion and increased water reabsorption.
increased ADH secretion and decreased water reabsorption.
decreased ADH secretion and increased water reabsorption.
decreased ADH secretion and decreased water reabsorption.
b → The main parts of the juxtaglomerular apparatus are the:
principal cells and macula densa.
granular cells and macula densa.
granular cells and intercalated cells.
intercalated cells and principal cells.
principal cells and granular cells.
c → The tubuloglomerular feedback mechanism responds to an increase in:
systemic blood pressure by signaling for a decrease in heart rate through blood-borne hormones.
urine production by signaling for a decrease in urine production through the hormone ADH.
NaCl concentration in tubular fluid by signaling for afferent arteriole constriction with local chemical messengers.
glomerular capillary hydrostatic pressure by signaling for afferent arterioles to constrict and increase filtration rate.
a → Stimulation of granular cells by the sympathetic nervous system causes them to:
d → Which of the following is a nitrogenous waste product produced from nucleic acid breakdown in the liver?