Topic 1.1 muscular systems

Question 1

Define cardiac muscle

Answer 1

• unconsciously controlled
• function is to pump blood around the body

Question 2

Define voluntary muscle

Answer 2

• muscles that attach to the skeleton via tendons
• under conscious control

Question 3

Define involuntary muscle

Answer 3

• no control over them
• contracts when the body needs them to

Question 4

List antagonistic pairs(4)

Answer 4

• biceps and triceps
• quadriceps and hamstrings
• gastrocnemius and tibialis anterior
• hip flexors and gluteals

Question 5

Type 1 muscle fibres

Answer 5

• contract slowly for longer duration with lesser force
• resistant to fatigue
  eg. marathon running

Question 6

Type 2a muscle fibres

Answer 6

• strong muscle contractions
• prone to fatigue
  eg. weight lifters or sprinters

Question 7

Type 2x muscle fibres

Answer 7

• Fast and extremely powerful
• quick bursts of power
• rapid fatigue
  eg. power lifting

Question 8

agonist

Answer 8

The working muscle

Question 9

antagonist

Answer 9

the relaxing muscle

Question 10

fixator

Answer 10

stabilises the joint around which movement is taking place