6 Muscle (Overview)

Question 1

What are the 3 types of muscle tissue?

Answer 1

Skeletal
Cardiac
Smooth

Question 2

Which muscle tissue types are striated?

Answer 2

Skeletal

Cardiac

Question 3

What are the 5 characteristics of muscle tissue?

Answer 3

Conductivity
Excitability
Contractility
Extensibility
Elasticity

Question 4

Which muscle tissue types are voluntary?

Answer 4

Only skeletal muscle - cardiac and smooth muscle are involuntary

Question 5

Where is smooth muscle found?

Answer 5

In the hollow organs and tubes of the body

Question 6

What are the regenerative capacities of different muscle tissues?

Answer 6

Skeletal muscle - moderate regenerative capacity

Cardiac muscle - very limited regenerative capacity, most injured tissue replaced by scar tissue

Smooth muscle - no regenerative capacity

Question 7

What are the sensory receptors that monitor stretch and contraction in muscle tissue?

Answer 7

Golgi Tendon Organ - located in tendon. initiates contraction response to avoid over-stretching

Muscle spindle - located in muscle belly. initiates stretch response to avoid over-contraction

Question 8

What are the 3 types of muscle fibres?

Answer 8

1: slow oxidative (aerobic, slow, low power, high endurance
2a: fast oxidative (aerobic, intermediate)
2b: fast glycolytic (anaerobic, rapid, high power, low endurance)

Question 9

What are the 3 types of muscle contraction?

Answer 9

Concentric: muscle contracts under load

Eccentric: muscle lengthens under load

Isometric: muscle does not change length under load