Exercise Science Unit 1.3: Muscle Fiber Types

Identify the antagonist muscle to the motion observed while on the upstroke of a curl:

• Deltoid

• Biceps brachii

• Latissimus Dorsi

• Tricep brachii

A muscle fibre type that has a high aerobic capacity is known as...

• Type I

• Type IIa

• Type IIx

• Type III

Tags

NGSS.HS-LS2-5

A muscle fibre type that would be used for a 55 m sprint during indoor track is:

• Type I

• Type II

• Type III

• Type IV

True or False: Type I fibers can function well in the absence of oxygen.

• True

• False

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Using the picture, identify which muscle fibre is represented by the darker pink colour

• Type I

• Type IIa

• Type IIx

• Type 21

Identify the agonist muscle to the motion observed while on the upstroke of a curl:

• Deltoid

• Biceps brachii

• Latissimus Dorsi

• Tricep brachii

Muscle fibers that fatigue slowly

• Fast Twitch

• Slow Twitch

Myofibrils have more mitochondria to produce a higher ATP concentration

• Slow Twitch
• Fast Twitch

Relies more on anaerobic metabolism to power contraction

• Slow Twitch
• Fast Twitch

Tags

NGSS.HS-LS2-3

Has a higher density of capillaries in order to provide oxygen

• Slow Twitch
• Fast Twitch