The Neuromuscular System

Question 1

What does the autonomic nervous system do

Answer 1

Regulates the function of our internal organs eg heart
Controls some of our skeletal muscles within the body
Works involuntary

Question 2

What does the Neuromuscular system do

Answer 2

-Nervous system and the muscles work together to allow movement
-Changes in the neuromuscular system take place before, during and after excersize.
- changes either Perez are body for excersize and allow for changing demands of differing intensities
- SNS and PNS are part of the peripheral nervous system

Question 3

What are the 3 main types of muscles fibres

Answer 3

• slow oxidative ( TYPE 1) slow twitch
• Fast oxidative glycolytic (TYPE IIA)
• fast glycolytic (TYPE IIB)

Question 4

What are the characeristics of slow twitch type 1 fibres

Answer 4

-slower contraction speed
-better adapted to lower inentsity excersize
-produce most of their energy aerobically

Question 5

What are the characteristics of fast twitch fibres type II

Answer 5

• faster contraction speed, generate a greater force of contraction
• fatigue quickly
• used for short, intense bursts of effort
• produce their energy anerobically

Question 6

Slow twitch fibre examples

Answer 6

• marathon
• cycling, Tour de France
• 10k swim

Question 7

Slow twitch fibre examples

Answer 7

• marathon
• cycling, Tour de France
• 10k swim

Question 8

Type IIA sporting examples

Answer 8

800m run
400m run
200m swim
Anything that lasts 2-3mins

Question 9

Is the contraction speed per second for type I, type IIa and type IIb fast or slow

Answer 9

Type I - slow (110)
Type IIb- fast (50)
Type IIB- fast (50)

Question 10

What is the motor neurone size for the 3 muscle fibres

Answer 10

Type I- small
Type IIa- large
Type IIb- large

Question 11

Is the motor neurone conduction capacity slow or fast for the muscle fibres

Answer 11

Type I- slow
Type IIa- fast
Type IIb- fast

Question 12

Is the force procued high or low for the muscle fibres (each one)

Answer 12

Type I- low
Type IIa- high
Type IIb- high

Question 13

Is the fatigability high, medium or low for each muscle fibre

Answer 13

Type I- low
Type IIa- medium
Type IIb- high

Question 14

Is the mitochondrial density high medium or low for each muscle fibre

Answer 14

Type I- high
Type IIa- medium
Type IIb- low

Question 15

Is the myoglobin content high medium or low for each muscle fibre

Answer 15

Type I- high
Type IIa- medium
Type IIb- low

Question 16

Is the myoglobin content high medium or low for each muscle fibre

Answer 16

Type I- high
Type IIa- medium
Type IIb- low

Question 17

Is the capillary density high or low for each muscle fibre

Answer 17

Type I- high
Type IIa- medium
Type IIb- low

Question 18

Is the aerobic capacity high or low for each muscle fibre

Answer 18

Type I- very high
Type IIa- medium
Type IIb- low

Question 19

Is the anaerobic capacity high or low for each muscle fibre

Answer 19

Type I- low
Type IIa- high
Type IIb- very high

Question 20

Is the myosin ATPase/ glycolytic enzyme activity high or low for each muscle fibre

Answer 20

Type I- low
Type IIa- high
Type IIb- very high

Question 21

Name the functional characteristics of fast and slow twitch muscle fibres

Answer 21

• contractional speed
• force produced
• fatigability
  -myosin ATPase/ glycolytic enzyme activity

Question 22

Name the sctructional characteristics of fast and slow muscle twitch fibres

Answer 22

-muscle neurone size
- motor neurone conduction copacity
-mitochondrial Density
- myoglobin content
-capillary density
- aerobic, anerobic copacity