Excretory Organs and the Urinary System (Grade 11 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 excretion?
What is excretion?
Removal of metabolic waste from organism
Which organ removes carbon dioxide and water vapour through exhaled air?
Which organ removes carbon dioxide and water vapour through exhaled air?
Lungs
What are the four main functions of the kidneys?
What are the four main functions of the kidneys?
Osmoregulation, excretion, pH, salt
What is the outer region of the kidney called?
What is the outer region of the kidney called?
Cortex
What is the Malpighian body made up of?
What is the Malpighian body made up of?
Glomerulus and Bowman's capsule
Why does high pressure occur in the glomerulus during filtration?
Why does high pressure occur in the glomerulus during filtration?
Afferent arteriole wider than efferent
What percentage of water is reabsorbed in the proximal convoluted tubule?
What percentage of water is reabsorbed in the proximal convoluted tubule?
About 65%
What does the Loop of Henle create by pumping salt into the medulla?
What does the Loop of Henle create by pumping salt into the medulla?
Hypertonic medulla with low water potential
Which ions are actively secreted in the distal convoluted tubule?
Which ions are actively secreted in the distal convoluted tubule?
H⁺, K⁺, Na⁺, bicarbonate
What substances should NOT be present in healthy urine?
What substances should NOT be present in healthy urine?
Glucose and amino acids