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Directional Terms and Joint Movements. Mrs. Frasca. Horizontal vs. vertical. Make sure that you know the difference between horizontal and vertical! Horizontal (side to side) Vertical (up and down) Hint: To help you remember, think about the sun rising and setting over the “horizon”.
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Directional Terms and Joint Movements Mrs. Frasca
Horizontal vs. vertical • Make sure that you know the difference between horizontal and vertical! • Horizontal (side to side) • Vertical (up and down) • Hint: To help you remember, think about the sun rising and setting over the “horizon”
Anatomical directional terms • Anterior • The front, or in front of • Posterior • The back, or behind (towards the rear)
Anatomical directional terms • Distal • Away from, furthest from the origin • Proximal • Near, closest to the origin
Anatomical directional terms • Superior • Above, over • Inferior • Below, under
Anatomical directional terms • Lateral • Away from the mid-line (center) • Towards the sides • Medial • Towards the mid-line (center) • Away from the sides
Anatomical Planes • Sagittal plane: divides the body vertically into right and left parts • Frontal or Coronal plane: divides the body vertically into anterior and posterior parts • Transverse or horizontal plane: divides the body horizontally into superior and inferior parts
Joints in our Bodies • Wherever 2 or more bones meet = A skeletal joint • Also called an articulation • There are many different types of joints that can move in very different ways • There are actually 18 different joint classifications
Types of Joint Movements • Flexion • Movement that decreases the angle between 2 bones
Types of Joint Movements • Extension • Movement that increases the angle between 2 bones
Types of Joint Movements • Hyperextension • Movement beyond the natural range of motion
Types of Joint Movements • Abduction • Movement of the limbs away from the middle of the body • (Describes movement of limbs only)
Types of Joint Movements • Adduction • Movement of the limbs toward the middle of the body • (Describes movement of limbs only)
Types of Joint Movements • Rotation • Movement of a bone on an axis, toward or away from the body
Types of Joint Movements • Circumduction • Circular movement of limbs around an axis • The proximal portion of the limb remains stationary • Proximal = where the limb attaches to the body • The distal portion moves in a circle • Distal = the point on the limb that is furthest from the proximal attachment
Joint Movements Activity • Pause for a class activity. (SIMON SAYS) • Can students demonstrate knowledge of these joint movements?
Anterior Posterior Distal Proximal Horizontal Vertical Lateral Medial Superior Inferior Flexion Extension Hyper-extension Rotation Adduction Abduction
Types of Joint Movements • Supination • To turn upward • To face a limb or body towards the ceiling • Ex: Turn palm upward so that it faces the sky
Types of Joint Movements • Pronation • To turn downward • To face a limb or body towards the ground • Ex: turn palms downward so that they face the floor
Types of Joint Movements • Plantar Flexion • Movement that extends the foot • Ex: Pointing your toes like a ballerina
Types of Joint Movements • Dorsiflexion • Movement that flexes the foot • Ex: Try to touch your toes to the front of your shin
Types of Joint Movements • Inversion • Turns the sole of the foot inward (medially)
Types of Joint Movements • Eversion • Turns the sole of the foot outward (laterally)
Types of Joint Movements • Protraction • Moving a body part forward (in the transverse plane) • Ex: shoulders and jaw
Types of Joint Movements • Retraction • Moving a body part backwards (in the transverse plane) • Ex: Neck or jaw
Types of Joint Movements • Elevation • Lifting a body part upward (superiorly) • (Occurs in the frontal plane) • Ex: Shoulders
Types of Joint Movements • Depression • Moving a body part downward (inferiorly) • (Occurs in the frontal plane) • Ex: Shoulders
Types of Joint Movements • Opposition • Moves the thumb to the tips of the other fingers • (That is why they are called “Opposable thumbs”)
Video • Crash Course in the Skeletal System • https://www.youtube.com/watch?v=RW46rQKWa-g • Joints • https://www.youtube.com/watch?v=DLxYDoN634c
POSTERS!!! • Directional movements