Muscular System

Question 1

What are the three muscle types ?

Answer 1

Smooth
Cardiac
Skeletal

Question 2

What are the muscle labels ?

Answer 2

1.
Trapezius
Gastrocnemius
Tibialis Anterior
Bicep Femoris
Pectorals
Rectus Abdominis
Gluteus Maximus
Biceps
2.
Obliques
Triceps
Adductors
Soleus
Rectus Femoris
Deltoids
Latissimus Dorsi
Erector Spinae

Question 3

What three things does muscle activation need ?

Answer 3

Energy in the form of ATP
Calcium (the on/off switch)
Stimulus (nerve message)

Question 4

What are the three functions of a muscle ?

Answer 4

Movement
Posture
Heat Production (catabolism)

Question 5

What does origin mean ?

Answer 5

Origin is the point of attachment closest to the midline of the body. It remains relatively fixed when the muscle contracts.

Question 6

What does insertion mean ?

Answer 6

Insertion is the point of attachment furthest away from the midline of body. When the muscle contracts it moves more than the point of origin.

Question 7

What are the three muscle fibre types ?

Answer 7

Type 1 (slow)
Type IIa (fast)
Type IIb (fast)

Question 8

What is type 1 muscle fibre ?

Answer 8

Slow twitch or slow oxidative. Good blood supply. Slow contraction speed. Very resistant to fatigue. Hugh numbers of mitochondria. Endurance activities.

Question 9

What is type II muscle fibre ?

Answer 9

Fast twitch. Poor blood supply, IIa - lower than maximal capacity, IIb - at near maximal capacity. Fast contraction speed. Fatigues easily. High intensity activities.