Section 1.3 Neuromuscular system

Question 1

What does the sympathetic nervous system do?

Answer 1

It prepares the body for exercise, known as fight or flight

Question 2

What does the parasympathetic nervous system do?

Answer 2

It relaxes the body and slows down many high energy functions

Question 3

What are the three main type of muscle fibers?

Answer 3

Slow oxidative (type 1)
Fast oxidative glycolytic (type 2a)
Fast glycolytic (type 2x)

Question 4

What are the structural characteristics of type 1 muscle fibers?

Answer 4

high mitochondria levels
High myoglobin content
high capillary density
small motor neurone size
Slow motor neurone conduction capacity

Question 5

What are the functional characteristics of type 1 muscle fibers?

Answer 5

Slow contraction speed
Low force produced
Low fatigability
Very high aerobic capacity
Low anaerobic capacity