Name: ______Class:___

Body Systems WebQuest!

Directions: Find this Body Systems WebQuest document in the NACS-Students-7th Science Folder. Use the document to Ctrl-Click and link to the websites provided. Use each website to answer the questions for that section.

Site #1:

1.Click on “What’s Inside This Article” and choose “Muscles and what they do.” How many muscles are in your body? ______What percent of your body weight are they? ___

2.List the 3 types of muscles: ______, ______, ______

3.Scroll to the next page of this article. What area of the brain controls muscle movements? ______

True or False? Muscles move body parts by contracting and then relaxing. Muscles can pull bones, and they can also push them back to the original position.

4.A type of muscle called a______contracts to bend a limb at a joint. Then, when the movement is completed, the flexor ______and the ______contracts to extend or ______the limb at the same joint. So, muscles work in pairs! Name a pair of muscles that work together in this way: ______& ______

Site#2:

5.The Circulatory System is responsible for transporting materials throughout the entire body. It transports nutrients, ______, and ______to your billions of body cells and carries away ______such as carbon dioxide that body cells produce.It is an amazing highway that travels through your entire body connecting all your body ______.

6.Blood cells that help stop bleeding are called ______.

7.______is the liquid part of the blood.

8.One drop of blood contains a half a drop of ______, 5 MILLION ______Blood Cells, 10 Thousand ______Blood Cells and 250 Thousand ______.

9.How far could your blood vessels stretch? ______

10.Roughly how many times might your heart have to beat in your lifetime? ______

Site #3:

11.The goal of ______is to deliver oxygen to the body and to take away ______.

12.Explain how the circulatory and respiratory systems work together: ______

______

13.Explain why you yawn. ______

______

Site #4:

14.Nerve cells are called ______.

15.The parts of the Central Nervous System (CNS) are: ______

16.The parts of the Peripheral Nervous System (PNS) are: ______

17.How fast can nerve signals (in the form of electrochemical ______) travel? ______

Site #5:

18.Name 3 organs that are part of the Excretory system AND another body system, and name the other body system:

a. Organ: ______Its other System: ______

b. Organ: ______Its other System: ______

c. Organ: ______Its other System: ______

19. How much urine can an average adult bladder hold? ______

20. About how many times does the average human urinate in a year? ______

21. What is the job of the kidneys? ______

Site #6:

22. List the parts of the Integumentary System: ______

23. About how much skin might you shed in a year? ______

24. Write a fact or function about each of the 3 layers of skin:

Epidermis: ______

Dermis: ______

Hypodermis: ______

25. What is the average number of hairs on an individual’s head? ______

26. What “ingredients” are in sweat? ______

Site #7:

Virtual Frog Dissection (If you have time, pick up a set of headphones and work through this virtual frog dissection on your computer.)