A
Which organ is primarily responsible for filtering wastes from the blood?
A. Urinary bladder
B. Ureter
C. Kidney
D. Urethra
C. Kidney
Which part of the kidney contains the glomeruli?
A. Renal medulla
B. Renal cortex
C. Renal pelvis
D. Ureter
B. Renal cortex
Which process is the FIRST step in urine formation?
A. Tubular secretion
B. Excretion
C. Tubular reabsorption
D. Glomerular filtration
D. Glomerular filtration
Which sequence correctly shows the flow of urine?
A. Kidney → Bladder → Renal Pelvis → Ureter
B. Kidney → Ureter → Urinary Bladder → Urethra
C. Ureter → Kidney → Bladder → Urethra
D. Kidney → Urethra → Bladder → Ureter
B. Kidney → Ureter → Urinary Bladder → Urethra
The moist ball of food formed in the mouth is called:
A. Chyme
B. Feces
C. Bolus
D. Filtrate
C. Bolus
Which of the following is NOT part of the urinary system?
A. Kidney
B. Ureter
C. Urinary bladder
D. Liver
D. Liver
The inner region of the kidney that contains the loops of Henle is the:
A. Renal cortex
B. Renal medulla
C. Renal artery
D. Renal pelvis
B. Renal medulla
The liquid produced after glomerular filtration is called:
A. Plasma
B. Blood
C. Filtrate
D. Urine
C. Filtrate
Which type of digestion physically breaks food into smaller pieces?
A. Chemical digestion
B. Mechanical digestion
C. Cellular digestion
D. Biological digestion
B. Mechanical digestion
Chewing food is also known as:
A. Peristalsis
B. Assimilation
C. Mastication
D. Defecation
C. Mastication
The muscular tubes that transport urine from the kidneys to the bladder are called:
A. Urethra
B. Ureters
C. Nephrons
D. Renal arteries
B. Ureters
The funnel-shaped structure that collects urine before it enters the ureter is the:
A. Renal cortex
B. Renal medulla
C. Renal pelvis
D. Glomerulus
C. Renal pelvis
Most glucose and amino acids are returned to the bloodstream during:
A. Excretion
B. Tubular reabsorption
C. Filtration
D. Secretion
B. Tubular reabsorption
Chemical digestion begins in the mouth through the action of:
A. Teeth
B. Tongue
C. Enzymes
D. Gums
C. Enzymes
The stomach changes the bolus into:
A. Feces
B. Nutrients
C. Chyme
D. Saliva
C. Chyme
Urine is temporarily stored in the:
A. Kidney
B. Ureter
C. Urinary bladder
D. Urethra
C. Urinary bladder
The renal vein carries:
A. Urine to the bladder
B. Blood to the kidney
C. Filtered blood away from the kidney
D. Urine outside the body
C. Filtered blood away from the kidney
Tubular secretion mainly occurs in the:
A. Bowman's capsule
B. Collecting duct
C. Distal convoluted tubule
D. Renal pelvis
C. Distal convoluted tubule
Which enzyme is found in saliva?
A. Lipase
B. Pepsin
C. Amylase
D. Peptidase
C. Amylase
Food moves through the esophagus by:
A. Diffusion
B. Osmosis
C. Peristalsis
D. Respiration
C. Peristalsis
Which structure carries urine out of the body?
A. Ureter
B. Renal pelvis
C. Urethra
D. Renal vein
C. Urethra
The functional unit of the kidney is the:
A. Cortex
B. Medulla
C. Nephron
D. Ureter
C. Nephron
The final step of urine formation is:
A. Reabsorption
B. Filtration
C. Secretion
D. Excretion
D. Excretion
The first process of digestion is called:
A. Digestion
B. Ingestion
C. Assimilation
D. Egestion
B. Ingestion
Hydrochloric acid is secreted by the:
A. Liver
B. Pancreas
C. Stomach
D. Small intestine
C. Stomach