Structure
Thin filaments of the sacromere are called___
actin
The main function of the muscular system is
movement of the body
The energy required for muscle contraction is obtained from_________
ATP
The main flexor of the upper limb
biceps brachii
The basic building blocks for muscle come from
proteins
Thick filaments that grab onto the actin are called...
Myosin
The way that the muscle contracts is by
2 filaments (actin & myosin) sliding past each other or the shortening of the sarcomere
Production of energy with oxygen is called__________.
aerobic respiration
The 2 main muscles that make up the back are
Lats and Traps
Genetic disorder characterized by muscle wasting
muscular dystrophy
Which muscle cells have more than one nucleus, are striated and are controlled voluntarily?
Skeletal
What are 2 OTHER functions of the muscular system (not movement)
Digestion Heat Production Posture Others...
Muscles that work with prime movers by providing the opposing action is the _____________.
Antagonist
The antagonist of the biceps brachii
triceps brachii
What should be done to avoid muscle imbalances and maintain mobility
Stretching!
The contractile unit of a skeletal muscle, situated between the Z-lines is called
Sarcomere
ATP is used to do what?
rotate the myosin head in order to shorten the sarcomere
When you work out slow (red) red muscles, the muscles...
Become more efficient (gain mitochondria)
The muscles that allow for flexion of the torso and help maintain posture
rectus abdominus
When the attachment of the muscle is inflamed
tendonitis
The message for a muscle contraction is transmitted from the motor neuron by
neurotransmitters (acetylcholine)
What two systems does the muscular system work closely with in order to ensure the body has enough ATP delivered to all muscles throughout the body.
cardiovascular- transport
respiratory- oxygen for making ATP
ATP may be made through a reaction between adenosine diphosphate and _________ which is stored in the muscles
Creatine Phosphate
Which muscle is primarily being used when the foot is dorsiflexed or inverted
Tibialis anterior
The term for muscle growth, which is only possible with good nutrition and force/stretch of the muscle
Hypertrophy