BTEC - Muscle

Slow twitch muscle fibres have:

• More mitochondria and more myoglobin than fast twitch

• More mitochondria and less myoglobin than fast twitch

• Less mitochondria and more myoglobin than fast twitch

• Less mitochondria and less myoglobin than fast twitch

Select all of the correct statements for fast twitch fibres

• Are more aerobic

• Are often used to maintain posture

• Fatigue more quickly

• fatigue more slowly

• Are more anaerobic

What colour are fast twich fibres

• red

• white

• blue

• yellow

What colour are slow twich fibres

• red

• white

• blue

• yellow

What is the smallest functional unit of muscle tissue?

• Muscle fibre

• myofibril

• sacromere

• Myocyte

Which are correct for A-band on a sacromere?

• They are the light band under the microscope and stay the shorten when muscles contract

• They are the light band under the microscope and stay the same length when muscle contract

• They are the dark band under the microscope and stay the shorten when muscles contract

• They are the dark band under the microscope and stay the same length when muscle contract

What is the correct name for the thoeory that explains muscle movement

• muscle contraction theory

• sliding filament theory

• Sacroplasmic reticulum theory

• Conduction theory

The I band is made up of:

• Myoglobin

• Actin

• Myosin

• tropomyosin

What is the name for the synapse between a motor neuron and a muscle fibre?

• reflex synapse

• muscloskeletal synapse

• neuromuscular junction

• Electrical synapse

A-Bands are ________ in color

• light

• dark

• neither