Anatomy and Embryology of Skeletal Muscle

Question 1

What are the types of muscle tissue?

Answer 1

Striated skeletal muscle
Striated cardiac muscle
Non-striated smooth muscle

Question 2

What are the two types of muscle contraction?

Answer 2

Isotonic - concentric (shorten ) eccentric (lengthen)

Isometric - exerts force without changing

Question 3

What are the 4 functions of muscles?

Answer 3

Primer mover
Antagonist
Fixator
Synergist

Question 4

What are the 7 main shapes of muscles?

Answer 4

Circular
Multipennate
Bipennate
Unipennate 
Parallel 
Fusiform 
Convergent

Question 5

What happens in the sarcomere during muscle contraction?

Answer 5

Sarcomere shortens
Z-line moves closer
I and H bands narrow
A band remains the same

Question 6

What are the 4 main fibre types?

Answer 6

Type 1 - slow oxidative
Type 2a - fast oxidative
Type 2b - fast glycolytic
Type 2x - super fast glycolytic