Muscles Flashcards
1
Q
Approximately what % of body weight do muscles account for?
A
40%
2
Q
What does the metabolism occurring in muscles produce?
A
heat essential for the maintenance of body temp
3
Q
What are the 2 features used to characterize muscles?
A
-presence/absence of light/dark stripes in muscle cells (striated or non-striated)
-voluntary/involuntary control
4
Q
What are the light and dark stripes in muscle cells?
A
striations/myofibrils
5
Q
What type of muscles have stripes?
A
striated muscles
6
Q
What is a myofibril?
A
a long row of repeated segments called sarcomeres
7
Q
What is a sarcomere?
A
the basic unit of striated muscle tissue
