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Merrill's Chapter 3
General Anatomy and Radiographic Positioning Terminology
146
Health Care
Undergraduate 2
08/29/2012

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Cards

Term
Anatomy
Definition
science of the structure of the body
Term
Physiology
Definition
study of functions of organs
Term
Osteology
Definition
study of bones
Term
Body planes
Definition
subdivide body in reference to anatomic position
Term
Sagittal plane
Definition
divide body into right and left segments
Term
Midsagittal plane (MSP)
Definition

divides body into equal right and left portions

 

(halves - always equal)

Term
Coronal planes
Definition
divide body into anterior and posterior parts
Term
Midcoronal plane (MCP)
Definition

divides body into equal anterior and posterior portions

 

(halves - always equal)

Term
Horizontal plane
Definition

pass crosswise through the body at right angles to the longitudinal axis

 

right angle to sagittal and coronal planes

 

Divide body into superior/inferior aka transverse plane cross-sectional

Term
Oblique plane
Definition

pass through a body part at any

angle between the other planes

Term
Interiliac plane
Definition
horizontal plane at the level of the iliac crests
Term
Thoracic cavity
Definition

pleural membranes

lungs

trachea

esophagus

pericardium

heart and great vessels

Term
Abdominal cavity
Definition

peritoneum

liver

gallbladder

pancreas

spleen

stomach

intestines

kidneys/ureters

major blood vessels

Term
Pelvic cavity
Definition

Retum

Urinary bladder

part of reproductive system

Term
Abdomen can be divided into:
Definition

4 quadrants

 

or

 

9 regions

Term
Vertebra prominens
Definition

C7

 

Most prominent cervical spinous process

Term
jugular notch
Definition

T2, T3

 

Good for isolating MSP

Term
inferior angle of scapula
Definition
T7
Term
xiphoid process
Definition

T9, T10

 

also on MSP

Term
iliac crest
Definition
L4, L5
Term
pubic symphysis
Definition

locate by palpating greater trochanters of femur

 

NEVER DIRECTLY PALPATE PUBIC SYMPHYSIS

Term
Body habitus
Definition

common variations in the shape of the human body

 

determines size, shape, and position of organs

Term
Body habitus types
Definition

sthenic

hyposthenic

asthenic

hyperstenic

Term
Bone functions
Definition

attachment for muscles

mechanical basis for movement

protection of organs

support

storage of minerals

blood cell production

Term
How many bones in body?
Definition
206
Term
Axial skeleton
Definition
supports and protects head and trunk
Term
Appendicular skeleton
Definition
provides means for movement
Term
Compact bone
Definition
strong, dense outer layer
Term
Spongy bone
Definition

inner, less dense

 

contains trabeculae filled with red and yellow marrow

Term
Red marrow
Definition
produces blood cells (red and white)
Term
Yellow marrow
Definition
stores fat cells
Term
Medullary cavity
Definition
central cavity of long bones
Term
Periosteum
Definition

tough outer layer

 

covers bones (except at articular ends)

Term
Endosteum
Definition
lines marrow cavity
Term
Ossification
Definition
development and formation of bones
Term
Primary ossification
Definition
begins before birth
Term
Secondary ossification
Definition
occurs after birth
Term
Epiphysis
Definition
end of a long bone
Term
Classifications of bones
Definition

long

short

flat

irregular

sesamoid

Term
long bone example
Definition
humerus or femur
Term
short bone example
Definition
carpals
Term
flat bone example
Definition
sternum or cranium
Term
irregular bone example
Definition
vertebrae
Term
sesamoid example
Definition

patella - largest sesamoid

 

sesamoids develop inside and beside tendons

Term
Arthology
Definition
study of joints
Term
synarthrosis
Definition
immovable joint
Term
amphiarthrosis
Definition
slightly moveable joint
Term
diarthrosis
Definition
freely movable joint
Term
fibrous joint
Definition

no joint cavity

 

fibrous connective tissue

 

strongest joint

 

types: syndemosis, suture, gomphosis

Term
cartilaginous joints
Definition

no joint cavity

 

virtually immoveable

 

types: symphysis, synchondrosis

Term
synovial joint
Definition

enclosed by articular capsule

 

freely movable

 

6 types:

gliding, hinge, pivot, ellipsoid, saddle, ball/socket

Term
gliding joint
Definition

simplest synovial joint

 

ex. intercarpal joints

Term
hinge joint
Definition

flexion/extension only

 

ex. elbow

Term
pivot joint
Definition

rotation around a single axis

 

ex. atlantoaxial joint

Term
ellipsoid joint
Definition

flexion/extension, abduction/adduction, and circumduction

 

ex. wrist joint

Term
saddle joint
Definition
similar to ellipsoid
Term
ball and socket joint
Definition

widest range of motion

 

ex. shoulder

Term
process/projection
Definition

extend beyond or project out

from the main body of a bone

Term
depression
Definition
hollow or depressed area
Term
fracture
Definition
break in a bone
Term
condyle
Definition
round process at an articular end
Term
coracoid or coronoid
Definition
beaklike or crownlike projection
Term
crest
Definition
ridgelike process
Term
epicondyle
Definition
projection above a condyle
Term
facet
Definition
small, smooth surfaced articular process
Term
hamulus
Definition
hook shaped
Term
head
Definition
expanded end of a long bone
Term
horn
Definition
hornlike process
Term
line
Definition

linear elevation

 

not as prominent as a crest

Term
malleolus
Definition
club shaped process
Term
protuberance
Definition
projecting prominence
Term
spine
Definition
sharp process
Term
styloid
Definition
long, pointed process
Term
trochanter
Definition

large, rounded, and elevated process

of the proximal femur

Term
tubercle
Definition
small, rounded, elevated process
Term
tuberosity
Definition
large, rounded, elevated process
Term
fissure
Definition
cleft or deep groove
Term
foramen
Definition
hole in a bone for transmission of vessels and nerves
Term
fossa
Definition
pit or hollow space
Term
groove
Definition
shallow linear channel
Term
meatus
Definition
tubelike passageway
Term
notch
Definition
indentation in the border of a bone
Term
sinus
Definition
recess, groove, cavity, or hollow space
Term
sulcus
Definition
furrow or trench
Term
types of fracture
Definition

closed v. open

 

nondisplaced v. displaced

Term
fx classifications
Definition

compression

compound (open)

simple

greenstick

transverse

spiral (oblique)

comminuted

impacted

Term
anterior
Definition

forward or front part

 

aka ventral

Term
posterior
Definition

back part

 

aka dorsal

Term
caudad
Definition

toward the feet

(away from head)

Term
cephalad
Definition
toward the head
Term
superior
Definition
nearer the head or above
Term
inferior
Definition
nearer the feet or below
Term
central
Definition
mid area
Term
peripheral
Definition
at or near surface, edge, or outside of another body part
Term
medial
Definition
toward the median plane
Term
lateral
Definition
away from the median plane
Term
superficial
Definition
near the skin or surface
Term
deep
Definition
far from surface
Term
distal
Definition
farthest from point of attachment
Term
proximal
Definition
nearer to the point of attachment
Term
external
Definition
outside the body or part
Term
internal
Definition
inside the body or part
Term
parietal
Definition
wall or lining of a body cavity
Term
visceral
Definition
covering of an organ
Term
ipsilateral
Definition
parts on the same side of the body
Term
contralateral
Definition
parts of the opposite side of the body
Term
palmar
Definition
palm of hand
Term
plantar
Definition
sole of foot
Term
dorsum
Definition

anterior (top) of foot

 

or

 

back of the hand

Term
projection
Definition

path of the CR

 

identified by entrance/exit points

Term
position
Definition

overall posture of the patient or general body position

 

also refers to specific placement of the body/part in relation to the table/IR

Term
view
Definition

describes part as seen by the IR

 

OPPOSITE OF PROJECTION

Term
method
Definition
specific projection developed by an invidiual
Term
AP
Definition
CR enters anterior exits posterior
Term
PA
Definition
CR enters posterior exits anterior
Term
axial
Definition
CR is angled 10 degrees or more
Term
tangential
Definition
CR directed along outer margin of a curved surface
Term
lateral projection
Definition
CR enters one side, exits other
Term
oblique projection
Definition

CR enters from angle

 

AP or PA should be specified

Term

Body position

 

upright

Definition
erect or vertical
Term

Body position

 

seated

Definition
upright but sitting on a stool
Term

Body position

 

recumbent

Definition
lying down in any position
Term
supine
Definition
lying on the back
Term
prone
Definition
lying face down
Term
Trendelenburg
Definition
supine w/ head lower than feet
Term
Fowler's
Definition
supine w/ head elevated
Term
Sims'
Definition

recumbent with pt lying on left anterior side with left leg extended and right knee/thigh partially flexed

 

Enema tip insertion position

Term
lithotomy position
Definition

supine with knees and hipped flexed,

thighs abducted and rotated externally,

ankles supported with straps

Term
lateral position
Definition

lying on side

 

named for side down

Term
oblique position
Definition

body is rotated

 

named according to side and surface

of body closer to the IR

 

RPO/LPO

 

RAO/LAO

Term
decubitus position
Definition

recumbent position w/ horizontal CR

 

named by side pt is lying on

Term
lordotic position
Definition
upright, leaning backward
Term
abduct
Definition
move away from central axis
Term
adduct
Definition
move toward central axis
Term
extension
Definition
straighten a joint
Term
flexion
Definition
bending a joint
Term
hyperextension
Definition
forced/excessive extension
Term
hyperflexion
Definition
forced/excessive flexion
Term
evert/eversion
Definition
outward turning of the foot at the ankle
Term
invert/inversion
Definition
inward turning of the foot at the ankle
Term
pronate/pronation
Definition
palm down
Term
supinate/supination
Definition
palm up
Term
rotate/rotation
Definition

turning of part around its axis

 

medial v. lateral

Term
circumduction
Definition
circular movement of a limb
Term
tilt
Definition
tipping/slanting slightly
Term
deviation
Definition
turning away from regular couse
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