Transcript types of muscle movements - Kleins

Muscle movements, types,
and names
Types of body movements
•
Every one of our our
600+ skeletal muscles is
attached to bone or to
other connective tissue
structures at no less than
two points
•
These points are called
the origin and the
insertion
Origin vs. Insertion
•
The origin of a muscle is
the site where it is
attached to immovable or
less movable bone
•
The insertion of a muscle
is the site where it is
attached to the movable
bone and therefore,
when the muscle
contracts, the insertion
moves toward the origin.
Types of body movements
•
There are 12 body
movements that are the
most common.
•
All of these movements
occur because our
muscles are working in
tandem with our skeletal
system.
Flexion
•
Flexion is a movement
generally in the sagittal
plane, that decreases the
angle of the joint and
brings 2 bones closer
together
•
Flexion is typical of hinge
joints but can also
happen at ball and
socket joints
Extension
•
Extension is the opposite
of flexion
•
Therefore, it is a
movement that increases
the angle or the distance
between two bones
•
If the angle created by
extension is greater than
180 degrees it is called
hyperextension.
Abduction
•
Abduction is moving a
limb away from the
midline of the body
•
This movement also
refers to the spreading of
fingers or toes
Adduction
•
Adduction is the opposite
of abduction so it is the
movement of a limb
toward the body’s
midline.
Rotation
•
Rotation is movement of
a bone around its
longitudinal axis.
•
Rotation is a common
movement of ball and
socket joints and
describes the movement
of the C1 and C2
vertebrae ( as in shaking
your head “no”)
Circumduction
•
Circumduction is a
combination of flexion,
extension, abduction and
adduction that is
common in ball and
socket joints such as the
shoulder
•
This can be done when
the proximal end of the
limb is stationary and its
distal end moves in a
circle.
Pronation
•
Pronation is the moving
of the palm of the hand
from anterior to a
posterior position
•
This action moves the
distal end of the radius
across the ulna
Supination
•
Supination is moving the
palm from a posterior
position to an anterior
position
•
It is the opposite of
pronation
Inversion and Eversion
•
Inversion is the the
turning of the sole of the
foot so that it faces
medially
•
Eversion is the turning of
the sole of the foot
laterally
Dorsiflexion and Plantar
Flexion
•
Dorsiflexion is the
movement at the ankle
that moves the instep of
the foot up and dorsally
toward the shin
•
Plantar flexion
straightens the ankle joint
causing the toes to point
downards