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WorksheetsSB025 TOPIC 19
Total questions: 15
Worksheet time: 11mins
When glucose concentration in the blood exceeds its normal level, this condition is called
Hyperglycaemia
Homeostasis
Glycosuria
Glycogenesis
Insulin is secreted by
Alpha-cells of the islets of Langerhans
Beta-cells of the islets of Langerhans
Cortex of adrenal glands
Medulla of adrenal glands
Insulin has to be injected into the body and cannot be taken in pills because
Insulin is absorbed faster if injected into the body
Insulin acts more efficiently if injected into the body
The reaction time of insulin taken in pill form is longer
Insulin will be digested in the alimentary canal
Gluconeogenesis is
The conversion of glucose into glycogen
The conversion of glycogen into glucose
The conversion of non-carbohydrate source into glucose
The conversion of non-glucose monosaccharides into glucose
Which of the following correction mechanisms occur in the human body if the blood glucose level is lower than the normal concentration?
I It stimulates α-cells to secrete insulin.
II Glycogenesis occurs.
III inhibit liver cells from releasing glucose
IV stimulates glucogenesis
I
II
III
IV
If Beta-cells of the pancreas of a mouse do not function, which of these reactions will occur in the mouse?
I Glycolysis is stimulated
II The synthesis of lipids is stimulated
III The synthesis of proteins is stimulated
IV The breakdown of glycogen is stimulated
V The production of glucose from sources other than glycogen is stimulated
I
II
III
IV
V
Which of the following substances are not found in the glomerular filtrate?
I Erythrocytes
II Urea
III Plasma proteins
IV Amino acids
I
II
III
IV
Most of the water filtered into the Bowman’s capsule is reabsorbed in the
Proximal convoluted tubule
Descending limb of the loop of Henle
Ascending limb of the loop of Henle
Distal convoluted tubule
Which of the following processes that occurs in the nephron is important for the detection of drugs in urine?
Ultrafiltration
Reabsorption
Active secretion
Counter current multiplier
Arrange the following structures found in the kidney in the correct sequence through which filtrate passes
1 Loop of Henle
2 Collecting duct
3 Bowman’s capsule
4 Distal convoluted tubule
5 Proximal convoluted tubule
5>4>3>2>1
3>5>1>4>2
3>4>1>5>2
1>5>2>3>4
Evidence of ultrafiltration in the glomerulus can be obtained by comparing the size of molecules present in Bowman’s capsule with that obtained in the
Afferent arteriole
Proximal convoluted tubule
Loop of Henle
Distal convoluted tubule
The function of the counter current multiplier process in loop of Henle is
To promote diffusion of Na+ ions into the tubule from blood capillaries
To promote diffusion of Na+ ions into blood capillaries from the tubule
To promote diffusion of water from the tubule into blood capillaries
To promote diffusion of water from blood capillaries into the tubule
Which of the following substances are actively secreted out into the glomerular filtrate in the distal convoluted tubule?
I Drugs III Ammonia
II H+ ions IV Creatinine
I
II
OOO
IV
How does alcohol affect urine production in kidneys?
Inhibits secretion of aldosterone
Inhibits secretion of ADH
Increases permeability of the distal convoluted tubule towards water
Increases permeability of the distal convoluted tubule towards Na+
If a person does not eat or drink for one day, which of the following glands increases its secretion?
I Alpha cells of islet of Langerhans
II Beta cells of islet of Langerhans
III Thyroid glands
IV Posterior pituitary glands
I
II
III
IV
