Introduction
Humans have to dispose of two sorts of garbage. Wastes produced by the digestive system (feces) as well as wastes produced by metabolic activities (sweat & urine). Egestion is the process of removing digestive wastes (pooping). Excretion is the process of removing metabolic wastes, this is excretion.
The excretory system is a key biological mechanism that maintains homeostasis by removing excess and waste materials from the body.
The majority of these items are utilised and broken down metabolic components that exit the body in the form of urine, perspiration, or feces.
Task
-Must know what is excretion, the organs involved, the functions of organs, the differences between systems involved in excretion, students will need to know the different types reactions involved, they will need to identify organs.
Process
The students need to widen their knowledge of excretion in humans by watching the videos links that follow, after watching the video they will have to answer questions that will know to test their understanding.
1.
2
The Activity is as follows.
Question 1
1.1 The kidneys remove metabolic waste from the liquid part of the blood.
Name
1.1.1 The liquid part of the blood
1.1.2 The process that involves removing metabolic waste from the body.
1.1.3 Describe the process of filtration in the kidney
1.1.4 Other than the elimination of waste products, identify functions of the urinary system
1＋1＋4＋4 =10
1.2
1.2.1 Name two regions in the kidney where water is reabsorbed.
1.2.2What do you think would happen if blood flow to the kidneys is blocked?
1.2.3 Contrast the renal artery and renal vein
2＋4＋4=10
Evaluation
The memo is as follows.
QUESTION 1
1.1
1.1.1 plasma√
1.1.2 Excretion√
1.1.3 In the nephron, your blood is filtered by the tiny blood vessels of the glomeruli and then flows out of your kidney through the renal vein. ... In a single day, your kidneys filter about 150 quarts of blood. Most of the water and other substances that filter through your glomeruli are returned to your blood by the tubules.√√√√
1.1.4 Besides the elimination of waste products, functions of the urinary system include maintaining homeostasis of mineral ions in extracellular fluid, regulating acid-base balance in the blood, regulating the volume of extracellular fluids, and controlling blood pressure.√√√√
1.2
1.2.1
Two regions in the kidney where water is reabsorbed are:
from the renal tubule into the peritubular capillaries√
from the collecting ducts√
1.2.2 If blood flow to the kidneys is blocked, I think that wastes would build up in the blood, as well as excess water and ions. This would be very dangerous and potentially deadly√√√√
1.2.3A renal artery connects each kidney with the aorta and transports unfiltered blood to the kidney√√. A renal vein connects each kidney with the inferior vena cava and transports filtered blood back to the circulation.√√
Conclusion
Students ask the questions in a section where they do not understand.
we ask basic questions as follows
what is excretion?
what organs involved ?
what is urinary system ?
Credits
Teacher Page
activity will be marked and marks will be given to them after 3 days.