Muscular System Flashcards
Tendon
Attaches muscle to bone.
Calcaneal Tendon
“Achilles Tendon”; attaches talus, soleus + gastrocnemius to tibia.
Aponeurosis
Wide, flat sheet of connective tissue that connects muscle to muscle.
Iliotibeal Tract (IT band)
Aponeurosis along the lateral side of both legs. Begins at ilium and connects to the tibia.
Origin
Where a muscle attaches to a bone and remains stable.
Insertion
Where a muscle attaches to a bone that moves or functions during movement.
Action
The movement that takes place when a muscle is excited.
Flexion
The action of bending usually at a joint.
Movement that causes the angle between two points of a joint to decrease.
Extension
The action of straightening, usually at a joint.
Movement causes the angle between to points of a joint to increase.
Adduction
Movement towards the midline.
Abduction
Movement away from the midline.
Supination
Upwards rotation (hand, arm, foot, etc.)
Pronation
Downwards rotation (hand, arm, foot, etc.)
Elevation
Superior or upwards motion of a body part (mandible).
Depression
Inferior or downwards motion of a body part (mandible).
Inversion
Movement of the foot inwards and towards the midline.
Eversion
Movement of the foot outwards and away from the midline.
Dorsiflexion
Toes up
Plantar Flexion
Tip-toes
Flexor Retinaculum
Strong fibrous band that covers carpal bones on the palmar side of the hand.
Extensor Retinaculum
A fibrous band on the back of the wrist that holds the extensor tendons in place. (dorsal carpal lig.)
Gluteus Maximus
Most superficial, butt muscle
Gluteus Medius
Deep to Glut. Max., Superficial to Glut. Min., medial butt muscle.
Gluteus Minimus
Most deep, smallest of the three.
