lab muscle Flashcards
movement that contract to perform a particular movement
agonist
actions oppose those of an agonist
antagonist
layers of muscle tissue
- epimysium
- perimysium
- endomysium
Epimysium
surrounds entire organ
Perimysium
surrounds fascicle of skeletal muscle fibers
Endomysium
surrounds individual skeletal muscle fibers
Skeletal Muscle Gross Anatomy
- origin
- insertion
- action
what structure is end of the muscle attached to the stationary bone?
origin
what structure is end of the muscle attached to the bone that moves?
insertion
movement that occurs at the synovial joint is called _______
action
the angle between articulating bones decrease
flexion
the angle between articulating bones increase
extension
extension movement continues past the anatomic position
hyperextension
the vertebral column moves (bends) in a lateral direction along a coronal plane
lateral flexion
lateral movement of a body part away from the midline
abduction
lateral movement of a body part toward the midline
adduction
a continuous movement that combines flexion, abduction, extension, and adduction in succession; the distal end of the limb moves in a circle
circumduction
a bone pivots around its own longitudinal axis
rotational motion (pronation, supination)
rotation of the forearm where the palm is turned posteriorly
pronation
rotation of the forearm where the palm is turned anteriorly
supination
movement of a body part inferiorly
depression
movement of a body part superiorly
elevation
ankle joint movement where the dorsum (superior surface) of the foot is brought closer to the anterior surface of the leg
dorsiflexion
ankle joint movement whereby the sole of the foot is brought toward the posterior surface of the leg
plantar flexion
twisting motion of the foot that turns the sole medially or inward
inversion
twisting motion of the foot that turns the sole laterally or outward
eversion
