Negative Feedback: Salt Concentration (Grade 12 NSC Matric Life Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is homeostasis?
What is homeostasis?
Maintaining stable internal conditions
Which gland produces the hormone aldosterone?
Which gland produces the hormone aldosterone?
Adrenal gland
What happens to aldosterone levels when blood salt concentration drops?
What happens to aldosterone levels when blood salt concentration drops?
Aldosterone secretion increases
Where are the receptor cells that detect changes in blood sodium levels located?
Where are the receptor cells that detect changes in blood sodium levels located?
Kidneys
What does aldosterone stimulate in the kidneys?
What does aldosterone stimulate in the kidneys?
Increased reabsorption of sodium ions
What happens when blood salt concentration becomes too high?
What happens when blood salt concentration becomes too high?
Adrenal gland stops releasing aldosterone
When salt levels are low, what happens to sodium lost in urine?
When salt levels are low, what happens to sodium lost in urine?
Less sodium is lost in urine
What is the relationship between sodium and water in the body?
What is the relationship between sodium and water in the body?
Where sodium goes, water follows
Why is this system called a negative feedback system?
Why is this system called a negative feedback system?
It detects changes and reverses them
Which of these is maintained by salt concentration regulation?
Which of these is maintained by salt concentration regulation?
Blood pressure stability