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L07 Urinary System

Total questions: 45

Worksheet time: 23mins

Name
Class
Date
1.

The female urethra is approximately:

a)

$15-20 \text{ cm}$ long

b)

$\approx 4 \text{ cm}$ long

c)

$\approx 10 \text{ cm}$ long

d)

The length is highly variable

2.

Which part of the female urethra is lined with stratified epithelium for protection?

a)

Proximal urethra

b)

Neck of bladder

c)

Distal urethra

d)

Entire length

3.

Micturition is initiated when urine accumulation activates:

a)

Voluntary nerve endings

b)

Stretch receptors in the bladder wall

c)

The external urethral sphincter

d)

The cerebral cortex

4.

The reflex action of micturition involves the contraction of the:

a)

External urethral sphincter

b)

Pelvic floor muscles

c)

Detrusor muscle

d)

Internal urethral sphincter

5.

In infants and young children, micturition is:

a)

Completely voluntary

b)

Largely involuntary

c)

Controlled by the external sphincter

d)

Inhibited by the cerebral cortex

6.

Voluntary control of micturition in adults is provided by the conscious control over the:

a)

Internal urethral sphincter

b)

Detrusor muscle

c)

External urethral sphincter

d)

Renal pelvis

7.

Urine output of less than $400 \text{ mL}$ per day is defined as:

a)

Anuria

b)

Polyuria

c)

Dysuria

d)

Oliguria

8.

The absence of urine is defined as:

a)

Polyuria

b)

Anuria

c)

Nocturia

d)

Oliguria

9.

The presence of blood in the urine is called:

a)

Proteinuria

b)

Ketonuria

c)

Haematuria

d)

Glycosuria

10.

The presence of protein in the urine, often due to leaky glomeruli, is:

a)

Glycosuria

b)

Haematuria

c)

Proteinuria

d)

Ketonuria

11.

Pain on passing urine, often described as a burning sensation, is:

a)

Polyuria

b)

Nocturia

c)

Dysuria

d)

Incontinence

12.

The presence of glucose in the urine, abnormal in conditions like diabetes mellitus, is:

a)

Proteinuria

b)

Glycosuria

c)

Uraemia

d)

Ketonuria

13.

The involuntary leakage of urine is:

a)

Nocturia

b)

Frequency

c)

Incontinence

d)

Oliguria

14.

Glomerulonephritis is a group of disorders affecting the:

a)

Renal pelvis

b)

Ureters

c)

Glomeruli

d)

Renal tubules

15.

Which microscopic description of glomerulonephritis involves an increased number of glomerular cells?

a)

Membranous

b)

Focal

c)

Diffuse

d)

Proliferative

16.

Painless passage of blood in urine due to damaged glomerular walls is a sign of glomerulonephritis known as:

a)

Proteinuria

b)

Hypertension

c)

Haematuria

d)

Uraemia

17.

The accumulation of nitrogenous wastes (urea, creatinine) in the blood is called:

a)

Oliguria

b)

Hyperlipidaemia

c)

Uraemia

d)

Acidosis

18.

Nephrotic syndrome is characterized by marked proteinuria, generalized oedema, hyperlipidaemia, and:

a)

Hyperglycaemia

b)

Hyperkalaemia

c)

Hypoalbuminaemia

d)

Hypertension

19.

In nephrotic syndrome, oedema is caused by the loss of plasma proteins, mainly albumin, which reduces:

a)

Glomerular filtration rate

b)

Plasma osmotic pressure

c)

Renal blood flow

d)

Renin secretion

20.

The most common cause of nephrotic syndrome in children is:

a)

Diabetic nephropathy

b)

Minimal-change glomerulonephritis

c)

Systemic lupus erythematosus (SLE)

d)

Hypertension

21.

Diabetic nephropathy is kidney damage caused by:

a)

Renal calculi

b)

Hypertension

c)

Diabetes mellitus

d)

Urinary tract infection

22.

The two major risk factors for diabetic nephropathy are long-standing hyperglycaemia and:

a)

Hyperlipidaemia

b)

Proteinuria

c)

Hypotension

d)

Hypertension

23.

Hypertension can cause renal disease by damaging renal vessels, leading to $\downarrow$ renal blood flow and triggering the:

a)

ADH system

b)

Calcitonin system

c)

Renin-Angiotensin-Aldosterone System (RAAS)

d)

Parathyroid hormone system

24.

A sudden, severe reduction in Glomerular Filtration Rate (GFR) and kidney function is:

a)

Chronic Kidney Disease (CKD)

b)

End-Stage Kidney Disease (ESKD)

c)

Acute Kidney Injury (AKI)

d)

Nephrotic syndrome

25.

$\downarrow$ Renal blood flow (e.g., from severe haemorrhage) is classified as which cause of AKI?

a)

Postrenal

b)

Renal (intrinsic)

c)

Prerenal

d)

Systemic

26.

Urine outflow obstruction (e.g., from a renal stone) is classified as which cause of AKI?

a)

Renal (intrinsic)

b)

Prerenal

c)

Postrenal

d)

Intrinsic

27.

Chronic Kidney Disease (CKD) is characterized by the progressive, irreversible loss of kidney function over:

a)

Days or weeks

b)

Months

c)

Years

d)

Hours

28.

An early sign of Chronic Kidney Disease (CKD) is often:

a)

Anuria

b)

Nocturia

c)

Haematuria

d)

Hypokalaemia

29.

Anaemia in CKD is largely due to the reduced production of:

a)

Renin

b)

Erythropoietin

c)

Aldosterone

d)

$\text{H}^+$ ions

30.

The final, irreversible stage of renal failure is:

a)

Acute Kidney Injury (AKI)

b)

Nephrotic syndrome

c)

End-Stage Kidney Disease (ESKD)

d)

Diabetic nephropathy

31.

Survival with ESKD requires renal replacement therapy, such as kidney transplant or:

a)

Chemotherapy

b)

Diuretics

c)

Dialysis

d)

Antibiotics

32.

Renal Calculi are solid deposits formed when urinary solutes precipitate, mainly:

a)

Sodium chloride and potassium

b)

Urobilin and ammonia

c)

Calcium oxalate and calcium phosphate

d)

Glucose and amino acids

33.

Renal calculi often originate in the collecting tubules or:

a)

Glomerulus

b)

Renal artery

c)

Renal papillae

d)

Urinary bladder

34.

A predisposing factor for renal calculi due to low urine volume and high solute concentration is:

a)

High protein diet

b)

Infection

c)

Dehydration

d)

High urinary $\text{pH}$

35.

Inflammation of the urinary bladder is known as:

a)

Ureteritis

b)

Pyelonephritis

c)

Urethritis

d)

Cystitis

36.

The cause of cystitis is often an ascending infection by which type of bacteria?

a)

Fungal

b)

Bowel bacteria (e.g., $\text{E. coli}$)

c)

Viral

d)

Airborne

37.

Stress incontinence is the leakage of urine during increased:

a)

Body temperature

b)

Intra-abdominal pressure

c)

Blood pressure

d)

Detrusor muscle tone

38.

Which type of incontinence involves a sudden, intense urge to void with inability to delay urination?

a)

Stress Incontinence

b)

Overflow Incontinence

c)

Urge Incontinence

d)

Functional Incontinence

39.

Overflow incontinence is caused by chronic overfilling of the bladder, often due to obstruction from an enlarged:

a)

Uterus

b)

Prostate

c)

Renal pelvis

d)

Intestine

40.

Passing urine during the night is called:

a)

Polyuria

b)

Oliguria

c)

Dysuria

d)

Nocturia

41.

The accumulation of nitrogenous wastes (urea, creatinine) in the blood is called:

a)

Acidosis

b)

Hypokalaemia

c)

Uraemia

d)

Nephrotic syndrome

42.

What is the minimum urine volume required per day to excrete wastes?

a)

$\approx 180 \text{ L}$

b)

$\approx 125 \text{ mL}$

c)

$\approx 1-1.5 \text{ L}$

d)

$\approx 500 \text{ mL}$

43.

The smooth muscle walls of the renal pelvis and calyces propel urine by:

a)

Osmosis

b)

Diffusion

c)

Filtration

d)

Peristalsis

44.

Which organ is located superiorly to the Right Kidney?

a)

Stomach

b)

Spleen

c)

Right adrenal gland

d)

Pancreas

45.

Which of these substances is selectively reabsorbed from the filtrate back into the blood?

a)

Creatinine

b)

Urea

c)

Amino acids

d)

Hydrogen ions