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Human Anatomy
study of the structures that make up the human body and how they relate to each other
Physiology
basic processes of the body and how they occur in the body
Structure determines ________.
function
Anatomical Position
the standard way the human body is shown
Anatomical Position Standards
standing erect
facing forward
arms to the side, palms facing forward, thumbs turned outward
legs straight
heels, feet and great toes parallel to each other
Anterior
towards the front of the body
Posterior
towards the back of the body
Anterior vs Posterior
Anterior: towards the front of the body
Posterior: towards the back of the body
Superior
above
Inferior
below
Superior vs Inferior
Superior: above
Inferior: below
Superficial
on or close to the surface of the body
Deep
farther away from the surface of the body
Superficial vs Deep
Superficial: on or close to the surface of the body
Deep: farther away from the surface of the body
Lateral
away from the midline of the body
Medial
towards the midline of the body
Lateral vs Medial
Lateral: away from the midline of the body
Medial: towards the midline of the body
Proximal
closer to a specific region
Distal
further from a specific region
Proximal vs Distal
Proximal: closer to a specific region
Distal: further from a specific region
Supine
lying on the back
Prone
lying on the front
Supine vs Prone
Supine: lying on the back
Prone: lying on the front
Planes
imaginary flat surfaces that divide the body
Median Plane
bisects the body into left and right halves
Sagittal Plane
any plane parallel to the median plane
Frontal Plane
bisects the body into front and back sections
Transverse Plane
bisects the body into top and bottom halves
Center of Gravity
the point where the median, frontal, and transverse planes all intersect
True or False: The taller someone is, the lower their center of gravity will be.
True
Longitudinal Axis
north-south
Horizontal Axis
east-west
Antero-Posterior Axis
front-to-back
Flexion
reduces the angle between two bones at a joint
Extension
increases the angle between two bones at a joint
Flexion vs Extension
Flexion: reduces the angle between two bones at a joint
Extension: increases the angle between two bones at a joint
In what plane does flexion-extension movement occur?
sagittal plane
Abduction
moving a segment of the body away from the midline of the body
Adduction
moving a segment of the body toward the midline of the body
Abduction vs Adduction
Abduction: moving a segment of the body away from the midline of the body
Adduction: moving a segment of the body toward the midline of the body
In what plane does abduction-adduction movement occur?
frontal plane
Circumduction
a cone of movement that does not include rotation
Circumduction occurs when _______-_________ movements are combined with _________-_________ movements.
flexion-extension, adduction-abduction
Internal (Medial) Rotation
rotation of a limb inwardly or towards the midline of the body
External (Lateral) Rotation
rotation of a limb outwardly or away from the midline of the body
Internal (Medial) Rotation vs External (Lateral) Rotation
Internal (Medial) Rotation: rotation of a limb inwardly or towards the midline
External (Lateral) Rotation: rotation of a limb outwardly or away from the midline
In what axis does internal (medial) rotation-external (lateral) rotation occur?
longitudinal axis
Pronation
when the palm is moved and faced posteriorly
Supination
when the palm is moved and faced anteriorly
Pronation vs Supination
Pronation: when the palm is moved and faced posteriorly
Supination: when the palm is moved and faced anteriorly
Inversion
when the sole of the foot is turned inward toward the medial line of the body
Eversion
when the sole of the foot is turned outward away from the medial line of the body
Inversion vs Eversion
Inversion: when the sole of the foot is turned inward toward the medial line of the body
Eversion: when the sole of the foot is turned outward away from the medial line of the body
Dorsiflexion
bringing the top of the foot toward the lower leg or shin
Plantar Flexion
“planting” the foot or pointing your toes straight down
Dorsiflexion vs Plantar Flexion
Dorsiflexion: bringing the top of the foot toward the lower leg or shin
Plantar Flexion: “planting” the foot or pointing your toes straight down
Elevation
a movement in a superior (upwards) motion
Depression
a movement in an inferior (downwards) motion
Elevation vs Depression
Elevation: a movement moving in a superior (upwards) motion
Depression: a movement moving in an inferior (downwards) motion
Protraction
moving in an anterior (forward) direction
Retraction
moving in a posterior (backwards) direction
Protraction vs Retraction
Protraction: moving in an anterior (forward) direction
Retraction: moving in a posterior (backwards) direction
Opposition
occurs when the thumb meets one of the other fingers
Reposition
when the thumb is returned to its anatomical position
Opposition vs Reposition
Opposition: occurs when the thumb meets one of the other fingers
Reposition: when the thumb is returned to its anatomical position