Muscular System (Laboratory) Flashcards
three muscles type that found in the body
cardiac muscle
skeletal muscle
smooth muscle
it has striations that usually has single nucleus. it is voluntary that found only in the heart
cardiac muscle
it has no striations and has single nucleus. it is voluntary and found mainly in the walls of hallow organs
smooth muscle
it is striated and it is multinucleated. it is voluntary, cells are surrounded and bundled by connective tissue
skeletal muscles
around single muscle fiber
endomysium
around a fascicle (bundle) of fibers
perimysium
covers the entire skeletal muscle
epimysium
on the outside of the epimysium
fascia
cord like structure
tendon
sheet like structure
aponeuroses
sites of muscles attachment
bones
cartilages
connective tissue
also called as “responsiveness”, the ability receive and respond a stimulus
irritability
ability to shorten when an adequate stimulus is received
contractility
the ability of muscle to stretch
extensibility
ability to recoil and resume their resting length after being stretched
elasticity
attachment to a movable bone
insertion
attachment to an immoveable bone
origin
movement that decreases the angle of the joint and brings two bones closer together
flexion
movement that increases the angle or distance between two bones or parts of the body
extension
movement of a bone around its longitudinal axis
rotational
moving a limb away from the midline of the body
abduction
movement of a limb towards the midline of the body
adduction
combination of flexion, extension, abduction, adduction….
circumduction
lifting the foot so that its superior surface approaches the shin, pointing your toe towards your head
dorsiflexion
pointing the toes away from your head
plantar flexion
turning the sole of the foot medially
inversion
turn the sole of the foot laterally
eversion
occurs when the forearm rotates laterally so the palm faces anteriorly or up
supination
occurs when the forearm rotates medially so that the palm faces posteriorly or down
pronation
action when you move your thumb to touch the tips of the other finger on the same hand
opposition
muscles that opposes or reverses a prime mover
antagonist
muscle with the major responsibility for a certain movement
prime mover
stabilizes the origin of a prime mover
fixator
muscle that aids a prime mover in a movement and helps prevent rotation
synergist
Single sheetlike muscle that covers the anterolateral neck
Platysma
Two headed muscles, one found on each side of the neck. one arises from the sternum and the other arises from the clavicle
Sternocleidomastoid
Deep muscles found between the ribs
Intercostal muscles
