BIO 2452: Practical #3 UPDATED ACTUAL Questions and CORRECT Answers

BIO 2452: Practical #3 UPDATED ACTUAL Questions and CORRECT
Answers

Question: URINARY SYSTEM (Ex. 40)
Correct Answer: In its excretory role, the urinary system is primarily concerned with the removal of
wastes from the body.: nitrogenous
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: The perform(s) the excretory and homeostatic functions of the urinary system.: kidneys
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: This knot of coiled capillaries, found in the kidneys, forms the filtrate. It is the::
glomerulus
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: The section of the renal tubule closest to the glomerular capsule is the:: proximal
convoluted tubule
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: The arteriole drains the glomerular capillary bed.: efferent
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Metabolism of nutrients produces wastes including:: carbon dioxide, nitrogenous wastes,
and ammonia that must be eliminated if the body's normal function is to continue
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Kidney primary functions: - excretory function - maintains the electrolyte, acid-base, and
fluid balances of the blood (thus making it a major homeostatic organ of the body)
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: For the kidney to perform its functions: - acts first as a blood filter and then as a filtrate
processor - it allows toxins, metabolic wastes, and excess ions to leave the body in the urine, while retaining
needed substances and returning them to the blood - manufactures urine
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Malfunction of the urinary system: - particularly the kidneys - leads to a failure in
homeostasis, which, unless corrected, is fatal
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Organs of the urinary system (anterior view):
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Proximal convoluted tubule (w/i renal tubule): - DESCRIPTION - highly coiled first
section of the renal tubule EPITHELIUM - simple cuboidal w/ many microvilli and many mitochondria
FUNCTION - primary site of tubular reabsorption of water and solutes - some secretion also occurs
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Organs of the urinary system (cross sectional view):

, Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Supportive tissue layers of the kidney (superficial to deep): - transparent renal fascia
(anterior & posterior) - perirenal fat capsule - fibrous capsule (holds the kidneys in place in a retroperitoneal
postion)
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Descending limb of the nephron loop (w/i renal tubule): DESCRIPTION - first portion of
the nephron loop EPITHELIUM - simple cuboidal with some microvilli FUNCTION - tubular reabsorption
and secretion of water and solutes
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Parietal layer of the glomerular capsule (w/i renal corpuscle): DESCRIPTION - outer
impermeable wall of the glomerular capsule EPITHELIUM -simple squamous epithelium FUNCTION -
forms the outside of the cuplike glomerular capsule - plays no role in filtration
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Internal anatomy of the kidney:
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Function of the remaining organs of the system (all except the kidneys): provide
temporary storage reservoirs or transportation channels for urine
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Fibrous capsule: a smooth, transparent membrane that adheres tightly to the external
aspect of the kidney
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Wall thickness of ureter, renal vein & renal artery- : URETER - the largest of these
structures - thickest wall RENAL VEIN - thinnest wall (and will be collapsed)
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Glomerulus (w/i renal corpuscle): DESCRIPTION - a cluster of capillaries supplied by
the afferent arteriole and drained by the efferent arteriole EPITHELIUM - fenestrated endothelium (simple
squamous) FUNCTION - forms part of the filtration membrane
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Visceral layer of the glomerular capsule (w/i renal corpuscle): DESCRIPTION -
podocytes that branch into foot processes EPITHELIUM - simple squamous epithelium FUNCTION -
forms part of the filtration membrane - spaces b/w the foot processes form filtration silts
Question: URINARY SYSTEM (Ex. 40)
Correct Answer: Renal blood flow pathway: 1. RENAL ARTERY 2. SEGMENTAL ARTERIES 3.
CORTICAL RADIATE ARTERIES 4. AFFERENT ARTERIOLES 5. GLOMERULUS 6. EFFERENT
ARTERIOLES 7. PERITUBULAR CAPILLARIES or VASA RECTA 9. CORTICAL RADIATE VEINS
10. INTERLOBAR VEINS 11. RENAL VEIN
Question: URINARY SYSTEM (Ex. 40)