NMJ + ECC
Site where a motor neuron's axon terminal meets the muscle fiber
What is the neuromuscular junction?
Antagonist of extensor hallucis longus
What is flexor hallucis longus?
This muscle closes and protrudes the lips and shapes the lips during speech
What is orbicularis oris?
Sometimes confused as a member of the rotator cuff, this muscle is NOT actually a member of the rotator cuff
What is teres major?
The name of the connective tissue surrounding a fascicle
What is the perimysium?
Calcium is sequestered here until an action potential travels down the t-tubules to trigger its release
What is the sacroplasmic reticulum?
Antagonist of biceps
What is triceps?
These are the two major muscles of mastication
What are temporalis and masseter?
Situated on the anterior aspect of the scapula
What is subscapularis?
A broad sheet like connective tissue muscle insertion
What is an aponeurosis?
When the resting membrane potential becomes less negative
What is depolarization?
Opposes frontalis
What is occipitalis (occipital belly of occipitofrontalis)?
This group of muscles stabilizes the hyoid to structures above
What are the suprahyoids?
This member of the rotator cuff abducts the humerus
What is supraspinatus?
This muscle abducts, flexes, and internally rotates the hip, while also stabilizing the hip and knee joints
What is tensor fascia latae?
When calcium binds to troponin, it causes this regulatory protein to shift over and expose binding sites for myosin heads
What is tropomyosin?
Antagonist of infraspinatus and teres minor
What is subscapularis?
This muscle works to laterally flex and rotate the head when working unilaterally; working bilaterally, it flexes the head
What is the sternocleidomastoid?
This rotator cuff muscle lies underneath the spine of the scapula
What is infraspinatus?
This type of muscle tissue features intercalated discs
What is cardiac muscle?
This energy carrying molecule drives cross bridge cycling and muscle shortening via the sliding filament model of contraction
What is ATP?
This antagonistic muscle of the biceps and pectoralis major extends, internally rotates, and adducts the humerus
What is latissimus dorsi?
Deep muscle that extends, laterally flexes, and rotates the head
What is splenius capitis?
These two muscles are the major external rotators of the rotator cuff
What are infraspinatus and teres minor?
This muscle flexes, abducts, and externally rotates the thigh and also flexes and internally rotates the knee
What is the sartorius?