Week 2 Packet Flashcards
Criteria 1 for naming muscles (ex: refute, oblique, orbicularis)
Direction of muscle fibers relative to longitudinal axis of muscle
Fibers oriented straight with respect to longitudinal axis
Rectus
Fibers run at an angle to the longitudinal axis
Oblique
Fibers run in a circular path
Orbicularis
Criteria 2 for naming muscles (examples major, minor, Maximus, minimus, longus, brevis)
Relative size
Big muscle
Major
Small muscle
Minor
Biggest muscle
Maximus
Middle sized muscle
Intermedius
Smallest muscle
Minimus
Longest muscle
Longus
Shortest muscle
Brevis
Criteria 3 for naming muscles (examples pectoralis major and rectus femoris)
Location
Criteria 4 for naming muscles (example brachioradialis attaches to humerus and the radius)
Location of the origin and insertion
Criteria 5 for naming muscles (example biceps and triceps)
Number of origins
Two heads
Biceps
Three heads
Triceps
Criteria 6 for naming muscles (examples deltoid and trapezius)
Shape of muscle
Triangular in shape
Deltoid
Shaped like a trapezium or kite
Trapezius
Criteria 7 for naming muscles (examples abduction and adduction)
Action
Flexes a muscle
Flexor
Extends a muscle
Extensor
Bring a muscle inwards
Adduction
Brings a muscle outwards
Abduction
Where muscle attaches at fixed end
Origin
Where muscle attaches at movable end
Insertion
Parallel bundle of fibers (what skeletal muscles are made up of)
Fascicles
Muscles also known as sphincters
Circular muscle
Widespread expansion over a sizable area and the fascicles come to a single, common attachment point
Convergent muscle
Blend into a tendon that runs through the central region of the muscle for its whole length, somewhat like the quill of a feather
Pennate muscle
Fascicles located on one side of the tendon
Unipennate
Have fascicles that insert on multiple tendons tapering toward a common tendon
Multipennate
Muscle that has fascicles that are spindle-shaped to create large bellies
Fusiform
Fascicles that extend in the same direction as the long axis of the muscle
Parallel
Consists of bones along the long axis of the body including skull, vertebral column, bony thorax (rib cage), auditory ossicles, and the hyoid
Axial skeleton
Consists of shoulder girdle, upper extremities, pelvic girdle, and lower extremities
Appendicular skeleton
Bone that is longer than it is wide
Long bone
Bone that is (usually) as long as it is wide
Short bone
Bone type that is represented by the sternum
Flat bone
Bones that do not fit into any of the 3 categories
Irregular bone
Large, rounded projection, may be roughened
Tuberosity
Narrow ridge of bone; usually prominent
crest
Very large, blunt, irregularly shaped process (only examples are on the femur)
Trochanter