Muscle Physiology: finish in lectures

Question 1

list 3 types of muscles

Answer 1

-skeletal
-cardiac
-smooth

Question 2

List the characteristics of skeletal muscles

Answer 2

• Multinucleated
• Long, unbranched fibres
• Voluntary
  -Striated (in TS only)
  -T tubules
• SR

Question 3

List the characteristics of smooth muscles

Answer 3

-Uninucleate
-Unbranched fibres
-Involuntary
-non striated

Question 4

List the charecteristic of cardiac msucles

Answer 4

-Branched fibres
-Intercalated discs
- Purkinje fibres (glycogen)
- Faintly striated
- Inherent rhythm
-branched

Question 5

myosin is know as the _ band and is a ____ filament

Answer 5

A
thick

Question 6

Actin is known as the _ band and is a ____ filament

Answer 6

I
thin

Question 7

what are myosin’s 4 biological activities

Answer 7

1. Spontaneously assembles into filaments
2. Enzyme (ATPase)
3. Binds polymerised actin

Question 8

what is the other classification of muscles besides cardiac, skeletal and smooth

Answer 8

Fast and slow fibres