The diagram shows a nephron.A nephron. W points to branch of renal artery. X points to branch of renal vein. Y points to tubular point of nephron. Z points to collecting duct.At what point does blood filtration start?WXYZ

Question

2. Which is the role of the gall bladder?

to provide physical digestion
to store the liquid produced by the liver
to make the liquid that is stored in the liver
to decrease the chemical digestion

3. The digestive system and the excretory system both excrete waste.

Which best describes how waste is secreted in each system?

The digestive system excretes a liquid waste and the excretory system excretes a solid waste.
Both systems excrete waste as a liquid.
Both systems excrete waste as a solid.
The digestive system excretes a solid waste and the excretory system excretes a liquid waste.

4. Which are structures of the excretory system? Select four options.

kidney
spleen
bladder
esophagus
ureter
urethra

5. Once the teeth start grinding food,___
is produced to make food moist and slippery.

6. The functional unit of the kidney is the___
.

7. In which part of the digestive system does a chemical change of the food first occur?

mouth
esophagus
stomach
liver

8. The picture represents the excretory system.The excretory system. X points to the part that connects the kidney to the bladder.Which is represented by the X?nephron
ureter
bladder
urethra

9. Which statement best describes the breakdown of food in the digestive system?

Carbohydrate digestion starts in the stomach and protein digestion starts in the stomach.
Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach.
Carbohydrate digestion starts in the esophagus and protein digestion starts in the small intestine.
Carbohydrate digestion starts in the small intestine and protein digestion starts in the esophagus.

10. Which is the proper order of structures that contact the substances removed from the blood?

nephron → urethra → bladder → ureter
urethra → ureter → bladder → nephron
nephron → ureter → bladder → urethra
urethra → bladder → ureter → nephron

Answer 1

Here are the answers to your questions:

1. At what point does blood filtration start?
   Answer: Y (the tubular point of nephron; filtration occurs in the renal corpuscle, which includes the glomerulus and Bowman's capsule, before the tubular segments).

2. What is the role of the gall bladder?
   Answer: to store the liquid produced by the liver (the gallbladder stores bile produced by the liver).

3. Which best describes how waste is secreted in each system?
   Answer: The digestive system excretes a solid waste and the excretory system excretes a liquid waste (solid waste is in the form of feces, and liquid waste is in the form of urine).

4. Which are structures of the excretory system?
   Answer:

   • kidney
   • bladder
   • ureter
   • urethra

5. Once the teeth start grinding food, ___ is produced to make food moist and slippery.
   Answer: saliva.

6. The functional unit of the kidney is the ___ .
   Answer: nephron.

7. In which part of the digestive system does a chemical change of the food first occur?
   Answer: mouth (salivary enzymes begin the chemical digestion of carbohydrates).

8. Which is represented by the X?
   Answer: ureter (the ureter connects the kidney to the bladder).

9. Which statement best describes the breakdown of food in the digestive system?
   Answer: Carbohydrate digestion starts in the mouth and protein digestion starts in the stomach.

10. Which is the proper order of structures that contact the substances removed from the blood?
    Answer: nephron → ureter → bladder → urethra.

Feel free to ask if you have further questions!