Health Blog!

Welcome students to our class blog. We will be using this space for class discussions to examine, evaluate, and share knowledge. Discussions provide opportunities for students to think critically on the topics we will be learning about in Health class. Concepts, assignments, and readings will be used as the basis for our discussions to create a positive learning community in which students are willing to share their ideas and to accept constructive criticism from their peers.

Thursday, January 6, 2011

Concept check 27.5
1. Explain how muscles work in pairs in moving limbs.
as one muscle contracts the other relaxes and vice versa
2. Identify the structures that make up a skeletal muscle. Include these terms: muscle fiber, fascicle, myofibrils, actin, myosin, sarcomere.
a muscle is made up of muscle fibers, muscle fibers are made up of myofibrils, these have sacromeres. sacromeres are made up of two types of filaments, thin (actin) and thick (myosin)
3. Identify at least 3 organ systems involved in a handshake. Describe WHAT each system contributes to the handshake.
muscles, bones and nerves. your brain gives the message to give the hand shake. the muscles receive the order and the muscles contract and relax depending on the movement, and finally the muscles move with the bones to make the hand shake possible
4. Explain how actin and myosin interact as a muscle cell contracts.
myosin first binds thin filaments in each contraction. then the heads band to the center.
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3 comments:

  1. emii alarconJanuary 8, 2011 at 9:09 AM

    the answers are well explained but maybe next time organize it a little better so it is easier to read! :)

    ReplyDelete
  2. isaiturraldeJanuary 8, 2011 at 12:06 PM

    You should be more organized. It would be easier to understand you information. Maybe be more precise in your answers. In the last question talk a little more about the process!

    ReplyDelete
  3. Estebanfs. (Denso Ayala)January 9, 2011 at 5:53 PM

    You should organize more the answers, answers are fine.

    ReplyDelete

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