Lesson 3.6.4.3.1
3.6.4.3.1 Hormonal control of blood water potential (ADH) Quiz: AQA Biology, Unit 6
20 questions
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Lesson 3.6.4.3.1, Hormonal control of blood water potential (ADH): 20 multiple choice questions for the AQA Biology (7402), Unit 6: Organisms respond to changes in their internal and external environments, written with Revision Ninja.
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The 20 questions
-
Where is antidiuretic hormone released into the blood from?
- Posterior pituitary
- Hypothalamus
- Adrenal cortex
- Anterior pituitary
-
Which nephron structure is the primary target for antidiuretic hormone?
- Loop of Henle
- Proximal tubule
- Bowman capsule
- Collecting duct
-
How does ADH increase water permeability in collecting duct membranes?
- Active transport
- Pinocytosis channels
- Osmotic lysis
- Inserting aquaporins
-
What physiological variable does osmoregulation specifically control?
- Blood glucose concentration
- Blood water potential
- Blood sodium mass
- Blood oxygen level
-
Which brain region contains osmoreceptors detecting changes in blood water potential?
- Cerebellum
- Hypothalamus
- Medulla oblongata
- Cerebrum
-
Which substance is entirely reabsorbed at the proximal convoluted tubule?
- Creatinine
- Urea
- Excess salts
- Glucose
-
What is the primary role of the loop of Henle in the kidney medulla?
- Urea production
- Sodium ion gradient
- Glucose filtration
- Protein synthesis
-
What physiological response occurs when blood water potential decreases significantly?
- Increased aldosterone destruction
- Decreased glomerular filtration
- Increased ADH release
- Decreased ADH release
-
What happens to ADH secretion after drinking a very large volume of pure water?
- Stays constant
- Decreases
- Increases
- Stops permanently
-
What urine output characterizes a failure to produce antidiuretic hormone?
- Large dilute volume
- Bloody viscous volume
- Complete anuria
- Small concentrated volume
-
What is the effect of a drug that blocks ADH receptors in the kidney?
- Increased urine volume
- Decreased urine volume
- Increased glucose loss
- Decreased blood pressure
-
Assume that 99 per cent of the 180 dm3 of glomerular filtrate produced each day is reabsorbed. What volume is reabsorbed each day?
- 1.8 dm3
- 99 dm3
- 180 dm3
- 178.2 dm3
-
Which nephron region actively transports sodium to build the medullary gradient?
- Bowman capsule
- Descending limb
- Proximal tubule
- Ascending limb
-
What is the primary effect of alcohol consumption on urine output?
- Bloody urine
- Concentrated urine
- Dilute urine
- No urine
-
Which nephron region relies on a sodium gradient to reabsorb water?
- Distal tubule
- Collecting duct
- Proximal tubule
- Bowman capsule
-
Which nephron structure is directly controlled by ADH to alter permeability?
- Proximal convoluted tubule
- Loop of Henle
- Collecting duct
- Glomerulus
-
What biological mechanism corrects deviations in blood water potential?
- Positive feedback
- Active transport
- Osmotic lysis
- Negative feedback
-
Why does drinking seawater lead to dehydration?
- Rapid digestion
- Rapid evaporation
- High salt concentration
- High toxicity
-
A person excretes 1.5 dm3 of urine per day when ADH is working. Without ADH the same solute load would need 15 dm3 of urine per day. How many times more water is excreted without ADH?
- 2 times
- 5 times
- 10 times
- 15 times
-
Which gland releases antidiuretic hormone (ADH) into the blood?
- Hypothalamus
- Posterior pituitary
- Adrenal cortex
- Anterior pituitary
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