Soc 14 The Musclur System Flashcards
(20 cards)
What muscles is on the top and front part of the arm
Biceps
What muscle is on the upper chest
Pectorlis major
What muscle are on the groin
Hip flexes
Antagonistic pairs
Muscles that work together to create movement.
The four antagonist pairs
Elbow (biceps,triceps)
Knee (hamstring,quadriceps)
Ankle (gastrocnemius,tibias anterior)
Hip (gluteals,hip flexor)
What are muscle fibers?
Muscle fibers are the individual contractile units of muscle tissue that enable movement.
What are the two main types of muscle fibers?
The two main types of muscle fibers are slow-twitch fibers and fast-twitch fibers.
True or False: Slow-twitch fibers are more efficient at using oxygen than fast-twitch fibers.
True
Fill in the blank: Fast-twitch fibers are primarily used for ______ activities.
short bursts of power and speed
What type of muscle fiber is best for endurance activities?
Slow-twitch fibers
Which type of muscle fiber has a higher capacity for anaerobic metabolism?
Fast-twitch fibers
What are the two subtypes of fast-twitch fibers?
Type IIa (fast oxidative) and Type IIb (fast glycolytic)
Multiple Choice: Which type of muscle fiber is more resistant to fatigue?
A) Slow-twitch fibers
What is the primary energy source for slow-twitch muscle fibers?
Oxygen
True or False: Fast-twitch fibers are better suited for prolonged activities.
False
Fill in the blank: Muscle fibers are classified based on their ______ and ______ characteristics.
contractile speed; metabolic
What is the main function of muscle fibers?
To contract and produce movement.
Which muscle fiber type is associated with sprinting?
Type IIb (fast glycolytic) fibers
Multiple Choice: What type of muscle fiber is primarily used in marathon running?
A) Slow-twitch fibers
What adaptation occurs in muscle fibers with endurance training?
Increased oxidative capacity in slow-twitch fibers
