muscles Flashcards
1
Q
what type of muscle is smooth muscle
A
involuntary
2
Q
what type of muscle is skeletal muscle
A
voluntary
3
Q
what makes up a muscle
A
muscle fibre
4
Q
what makes up muscle fibre
A
myofibril
5
Q
what are myofibral made up of
A
filimants
6
Q
what are filiments made up of
A
sarcomeres
7
Q
what are the two types of filiments
A
actin
myosin
8
Q
describe the actin filiment
A
thinner
consists of two strands twisted around each other
9
Q
describe the myosin filiment
A
thicker
consists of long shaped rod tails with bulbous heads that project to the sides
10
Q
what are the two parts of the sacromere
A
a band
i band
11
Q
what colour is the a band
A
dark
12
Q
why is the a band dark
A
thick filiments
has both actin and myosin
13
Q
what colour is the i band
A
light
14
Q
why is the i band light
A
only contains actin
15
Q
what is sarcoplams
A
cytoplasm of muscle fibre
