Malisha S wanted to know:


1. Every human body has an uncountable number of this basic unit of a muscle known as the: (1 point)
muscle fibers
ligaments
tendons
muscle tissues
2. Slow-twitch muscles are needed for: (1 point)
Quick, short bursts of energy for high intensity
Endurance activities
Speed or power activities
Low endurance and short duration exercises
3. A group of muscle fibers responsible for a specific movement is called: (1 point)
a motor unit
a striated group
a fast-twitch unit
a slow-twitch unit
4. When a muscle fiber contracts as much as it can it is called the _________________. (1 point)
Maximum potential principal
Contraction principal
Muscular capacity principal
All or none principal
5. Select the answer below that best fits the following description.

Voluntary
Come in pairs
Attach to the bones through tendons
Made up of long, cylindrical fibers (1 point)
Striated muscles
Cardiac muscles
Smooth muscles
Contracted muscles
6. Select the answer below that best fits the following description.

Involuntary
Found in internal organs
Can stretch or maintain tension for long periods of time

(1 point)
Striated muscles
Cardiac muscles
Smooth muscles
Skeletal muscles
7. Select the answer below that best fits the following description.

Involuntary
Only found in the heart

(1 point)
Striated muscles
Cardiac muscles
Smooth muscles
Skeletal muscles
8. What is occurring when you are curling your arm during a bicep curl? (1 point)
The muscle is lengthening as in eccentric contraction
A concentric contraction is when your muscle is producing more force than the resistance you are using
The muscle is neither lengthening nor shorting as in an isometric contraction
A concentric contraction occurs when there is a contraction of the muscle, but there is no movement
9. What is happening during the downward portion of the bicep curl, when the arm returns to its starting position? (1 point)
The muscle is lengthening as in eccentric contraction
A concentric contraction is when your muscle is producing more force than the resistance you are using
The muscle is neither lengthening nor shorting as in an isometric contraction
An isometric contraction occurs when there is a contraction of the muscle, but there is no movement
10. What is happening to a muscle when you are pushing or pulling on an immoveable object? (1 point)
The muscle is lengthening as in eccentric contraction
A concentric contraction is when your muscle is producing more force than the resistance you are using
The muscle is neither lengthening nor shorting as in an isometric contraction
An isometric contraction occurs when there is a contraction of the muscle, but there is no movement