Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Chapter 7

The Muscular System 7.1-7.3

Skeletal Muscles Muscles that are cylindrical, have many nuclei, alternating light and dark bands. The muscles attach directly to the skeleton or skin. Voluntarily controlled.
Cardiac Muscle Muscles of the heart. Striated and cylindrical with one to two nuclei. These muscles are branched and have intercalated disks. Involuntarily controlled.
Smooth Muscle Located within body organs. Spindle shaped cells that are narrow and have one nucleus. Involuntarily controlled.
Endomysium A layer of loose connective tissue that surrounds each muscle fiber.
Fascicle A group of muscle fibers bundled together.
Perimysium The connective covering surrounding fascicles.
Epimysium The outermost connective tissue layer that surrounds the entire muscle.
Tendon An accumulation of collagen fibers that attach a muscle to a bone.
Sarcolemma The plasma membrane of a muscle fiber.
Sarcoplasm The cytoplasm of a muscle fiber.
Sarcoplasmic reticulum The endoplasmic reticulum of a muscle fiber.
T Tubules Conduct impulses for a muscle cell that reach from the sarcolemma to the sarcoplasmic reticulum.
Myofibrils Bundles of myofiliaments. Myofibrils are the part of the muscle that contract.
Myoglobin A protein and pigment that acts as oxygen storage molecule.
Sarcomeres Repeating units found found within a muscle, made up of Z lines, A bands, H zones, and I bands.
Z Lines Two dark vertical lines that mark the ends of a sarcomere.
I Band A region of thin filaments at the ends of a sarcomere that attach to the Z Line.
A Bands Regions of thick and thin filaments
H Zone A region in the center of A bands that only contain myosin.
Thick Filaments A filament made up of only myosin and is part of the A Band and H Zone.
Thin Filaments Made up of three proteins: Actin, tropomyosin, and troponin.
Created by: Mr.Klein