Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.

Remove ads
Don't know
Know
remaining cards
Save
0:01
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:
Retries:
restart all cards




share
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

Chap. 6 muscles

anatomy chapter 6

QuestionAnswer
contractility the ability of skeletal muscle to shorten with force
excitability the capacity of skeletal muscle to respond to a stimlus
extensibility the ability to be stretched
elasticity ability to recoil to their original resting length after they have been stretched
muscles help to produce _ _ _ _ essential for maintenance of normal body temperature heat
each skeletal muscle is surrounded by a connective tissue sheath called the epimysium
_ _ _ _ _ is another connective tissue located outside the the epimysium. Fascia
what surrounds and separates the muscles fascia
a muscle is composed of numerous visible bundles called muscle fasciculi (fascicle)
fascicle are surrounded by loose connective tissue called perimysium
The fasciculi are composed of single muscles cells called fibers
Each muscle fiber is a single cylindrical cell containing several nuclei
each fiber is surrounded by a connective tissue sheath called the endomysium
the cytoplasm of each fiber is filled with myofibrils
thread-like structure that extends from one end of the fiber to the other myofibrils
myofibrils contain 2 major kinds of protein fibers actin and myosin
define actin thin myofilaments
define myosin thick myofilaments
actin and myosin myofilaments form highly ordered units called _______ which are joined end to end to form the myofibril sarcomeres
basic structural and functional unity of the muscle sarcomeres
the sliding actin myofilaments past myosin during contraction sliding filament mechanism
nerve cells that carry action potentials to skeletal muscle fibers motor neurons
a single motor neuron and all the skeletal muscle fibers it innervates motor unit
the ____ extends the length of the myosin A band
where the muscle remains contracted without relaxing tetany