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.

Sunday, January 9, 2011

Concept Check 27.5

1. Explain how muscles work in pairs in moving limbs.
The Muscles of the human body work in pairs. When one muscle relaxes the other one contracts. and viceversa.

2. Identify the structures that make up a skeletal muscle. Include these terms: muscle fiber, fascicle, myofibrils, actin, myosin, sarcomere.
Muscle FIbers: They contain the nuclei.
Myofibrils: Contain bandles of smaller units.
Actin: The protain which makes the thinner filaments.
Myosin: The protain which makes the thicker filaments.
Sarcomere: The Muscle fibers.

3. Identify at least 3 organ systems involved in a handshake. Describe WHAT each system contributes to the handshake.
You use you brain to coordinate you hand with your eye. The you use your nerves to feel the other person's hand. Finally your muscles allow you to move your hands and parts of the body.
4. Explain how actin and myosin interact as a muscle cell contracts.
They are both protains that make the filaments of the muscles.
Posted by at

1 comment:

  1. Mauricio BustamanteJanuary 9, 2011 at 7:55 PM

    2. Explain how these things relate to each other more thoroughly , don´t just define each term.
    3. You have recognized only 2 systems because your brain and nerves are both part of the nervous system, but remember that you use circulatory, muscular, skeletal, etc.
    4. The acting and the myosin follow a pattern, so the can overlap or stretch in order to relax and contract muscles.

    ReplyDelete

Subscribe to: Post Comments (Atom)