Sliding Filament Theory
Which type of neurons innervate muscle fibers?
Motor Neurons
This muscle abducts the humerus
Deltoid
A skeletal muscle cell is called this
Fiber
This type of muscle is multinucleated and striated
Skeletal Muscle
This muscle raises the eyebrows
Frontalis
What ion is released from the sarcoplasmic reticulum?
Calcium (Ca++)
This muscle can laterally rotate the head.
Sternocladomastoid
This connective tissue layer covers the outside of the muscle and turns into tendons at the orgin/insertion.
Epimysium
This type of muscle is not striated
Smooth Muscle
This muscle goes around the eyes
Orbicularis Oculi
Which filament is thicker, actin or myosin?
Myosin
This muscle adducts the humerus
Latissimus Dorsi / Pectoralis Major
A group of muscle fibers is referred to as a...
Fascicle
This type of muscle lines hollow organs
Smooth Muscle
This muscle is the main mover when you smile
Zygomaticus
When a muscle fiber is at rest, what molecule is attached to a myosin head?
ADP (and a phosphate)
The biceps femoris is one of a group of muscles usually referred to as this
Hamstring
This membrane surrounds fascicles
Perimysium
This type of muscle features intercalated disks
Cardiac Muscle
Name the two largest muscles responsible for clenching the jaw
Temporalis and Masseter
Which filament does calcium bind to?
Actin
These two muscles of the calf extend the foot when walking or jumpting
What is the smallest contractile unit called
Sarcomere
Name the type(s) of muscle controlled by the autonomic nervous system.
Cardiac and Smooth Muscle
This muscle squeezes the cheek towards the teeth.
Buccinator