Back Muscles Flashcards
(34 cards)
What primary tissue type makes up the bulk of a skeletal muscle?
Skeletal muscle
What is another term for skeletal muscle cell?
Muscle fibers
What tissue is composed of areolar connective tissue and adipose that separates muscle from skin?
Superficial fascia
What are cordlike structures that attach muscle to bone, skin, or other structures?
Tendons
What are sheets of tissue that connect muscle to bone,skin or other structures?
Aponeuroses
What are bands of connective tissue that hold tendons in place?
Retinacula
Which attach of a muscle usually remains stationary when a muscle contracts?
Origin
Which attach of a muscle usually moves when a muscle contracts?
Insertion
What is the enlarged fleshy belly of a muscle?
Belly
What is a muscle producing a particular movement called?
Agonist (prime mover)
What is a muscle whose actions oppose those of the prime mover?
Antagonist
What is a muscle that assists the prime mover in its action?
Synergist
What is axial muscles?
Muscles that have both their origins and insertions on parts of the axial skeleton
What is the trapezius origin?
Spinous processes of C1-T12
What is the trapezius insertion?
Spine of the scapula
What is the action of the trapezius?
•Depress scapula
•Adduct scapula
•Elevate scapula
What is latissimus Dorsi origin?
Thoracolumbar fascia
What is latissimus dorsi insertion?
Intertubercular groove of the humerus
What is the action of latissimus dorsi?
Extends, adducts, and rotates humerus medially retracts shoulder
What is levator scapulae origin?
Posterior tubercles of transverse process of C1 C4
What is the insertion of levator scapulae?
Superior part of vertebral border of scapula
What is the action of levator scapulae?
Elevate scapula
What is rhomboid minor origin?
Inferior portion of nuchal ligament and spinous processes of C7-T1
What is the insertion of rhomboid minor?
Vertebral border of the scapula
