Neurotransmitter that stimulates the contraction of a skeletal muscle.
What is Acetylcholine?
100
Running and swimming are examples of this type of exercise; which improves muscles' resistance to fatigue.
What is Aerobic (endurance) Exercise?
100
Muscle that is involved in blowing and sucking motions.
What is the Buccinator?
100
This muscle flexes the waist as in doing a 'sit up'.
What is the Rectus Abdominus?
200
The thin myofilament which is part of the sarcomere.
What is Actin?
200
The point where the end of a nerve fiber meets another cell.
What is a Synapse?
200
The type of muscle that creates voluntary action.
What is skeletal muscle?
200
The smiling muscle.
What is the Zygomaticus?
200
The broad muscle of the back that extends from the vertebrae and fascia of the waist to the humerus which extends the shoulder to reach behind you.
What is the Latissimus Dorsi?
300
The light and dark transverse bands in skeletal muscles.
What are striations?
300
The 'action' when a nerve signal ceases and the axon terminal stops releasing ACh.
What is Relaxation?
300
A broad sheet of tendon that attaches a muscle to a bone.
What is an Aponeurosis?
300
The action of the paired muscles of the Temporalis and the Masseter.
What is chewing?
300
Another name for the calcaneal tendon.
What is the Achilles Tendon?
400
The segment of a myofibril from one Z disc to the next Z disc.
What is a Sarcomere?
400
A low level of stimulation from the nervous system that keeps even relaxed muscles in a state of partial contraction; maintains the body against the pull of gravity.
What is Muscle Tone?
400
The prime mover of a joint action.
What is an Agonist?
400
The prime mover of neck flexion and when one side contracts it causes the head to turn to one side and tips the chin up.
What is the SCM: Sternocleidomastoid?
400
The two groups of muscles that are the agonist and the antagonist that create the actions of knee flexion and extension.
What are the Quadriceps and the Hamstrings?
500
The action of the sarcomeres pulling the Z discs closer to each other.
What is the shortening of the muscle?
500
Contraction of the muscle without a change in length.
What is an Isometric Contraction?
500
The muscle that opposes the prime mover.
What is the Antagonist?
500
The muscles that helps you wink, blink or close your eyes.
What are the Orbicularis Occuli?
500
These 4 muscles make up the rotator cuff and are nicknamed the "SITS muscles".
What are the Supraspinatus, Infraspinatus, Teres Minor and the Subscapularis?