Lecture Week 9 Quiz - Skeletal Muscle Structure Flashcards
1
Q
Which muscle fiber structure stores calcium?
A
Sarcoplasmic reticulum
1
Q
Which structure in a muscle fiber contracts?
A
Myofibril
2
Q
The contractile unit within a myofibril is called a
A
Sarcomere
3
Q
Where in a myofibril would you find z lines?
A
In the middle of the I bands
4
Q
Which of the following is formed from areolar tissue?
A
Endomysium
5
Q
A bundle of muscle fibers within a skeletal muscle like your biceps brachii is called a (an)
A
Fascicle
6
Q
The connective tissue at the outermost surface of a skeletal muscle that separates the muscle from surrounding organs is called the
A
Fascia
7
Q
Which of the following contains both thick and thin myofilaments?
A
A band
8
Q
The plasma membrane of a muscle fiber is called the
A
Sarcolemma
9
Q
Which of the following is the smallest?
A
Myofilament
