Intro Flashcards
plane that divides left and right
sagittal/medial plane
front of body
anterior (ventral)
back of body
posterior (dorsal)
towards the head
superior (cranial)
towards the feet
inferior (caudal)
towards midline
medial
away from midline
lateral
closer to a reference
proximal
further from reference
distal
close to surface
superficial (external)
further from surface
deep (internal)
bending of a joint
flexion
opposite of flexion
extension
movement away from midline
abduction
movement towards midline
adduction
shoulder joint rotates 360°
circumduction
movement of forearm that pivots hand to downward position
pronation
movement of forearm that pivots hand into upward position
supination
wrist abduction with respect to middle finger
radial deviation
wrist adduction with respect to middle finger
ulnar deviation
turn sole of foot inwards
inversion
turn sole of foot outwards
eversion
movement of ankle that brings foot into upward position (heel on floor)
dorsiflexion
movement of ankle that brings foot into downward position (toes on floor)
plantarflexion
movement of scapula inwards along rib cage
retraction
movement of scapula away from vertebra along ribcage
protraction
pivoting of a body part
rotation
muscle in walls of hollow organs, vessels and respiratory pathways (functions in digestion, reproduction, circulation, and breathing)
smooth muscle (involuntary)
muscle that makes up the walls of the heart; creates pulsing action to circulate blood
cardiac muscle (involuntary)
muscle connected to bones; produces movement at joints
skeletal muscle
how many muscles are there
nearly 700
purposes of muscle
- motion
- posture
- protection
- thermogenesis
- vascular pump
purpose of parallel fibre direction
enables muscle to shorten equally and in same direction; maximizes ROM
plane that divides anterior and posterior sides
frontal plane
plane that divides superior and inferior sides
horizontal/transverse plane
parallel muscle shape with thick central belly and tapered ends
fusiform muscle shape
parallel muscle shape with fibre arrangements that surround an opening to form a sphincter (designed to contract/close passages or relax/open them)
circular muscle shape
parallel muscle shape that is broad at base, converging to a single point; fan shaped arrangements allow for diverse actions
triangular muscle shape
pennate muscle shape where fibres run obliquely from one side of central tendon; look like half of a feather
unipennate muscle shape
pennate muscle shape where fibres run obliquely along both sides of central tendon; look like full feather
bipennate
pennate muscle shape where muscle tendons with oblique muscle fibres are on both sides; produce the least amount of force
multipennate muscle shape
slanting fibre direction
oblique
straight fibre direction
rectus
properties that are used to name muscles
location size origin fibre direction insertion shape action number of heads
the more proximal or less movable attachment
origin
the more distal or moveable attachment
insertion
the prime mover of a joint
agonist
opposes the agonist, relaxes to allow movement
antagonist
steadies the bones, fixes origin
fixator
assists in movement (initiated movement)
synergist
rigid system that moves on a fulcrum
lever
applied force and resistance on opposite sides of fulcrum; changes force transmission, speed and direction
first class lever
resistance between applied force and fulcrum; magnifies force at the cost of speed and distance
second class lever
applied force between fulcrum and resistance; increases speed and distance, but requires greater force
third class lever
how many bones in the body
206
bones shape that is longer than it is wide
long bones
compact bone with yellow marrow in centre that stores fat
diaphysis (shaft)
spongy bone surrounded by thin layer of compact bone
epiphysis (bumpy ends)
cube shaped, mainly spongy bone surrounded by thin layer of compact bone
short bones
specialized short bone formed within tendons
sesamoid bone (patella)
thin, flattened, curved bones developed by ossification of a fibrous network. thin layer of spongy bone (site of hematopoiesis) surrounded by compact bone
flat bone
unique shaped bones
irregular bones
small irregular bone found along sutures of cranium that tend to be symmetrical on both sides of skull and vary in size
wormian bones
any projection or bump
process
an extension of bone
ramus
shallow depression
fossa
narrow groove or depression
sulcus
rounded passageway for blood vessels and nerves
foramen
elongated cleft
fissure
passageway through a bone
canal
chamber with a bone (air filled cavities)
sinus or antrum
tiny passageway
meatus
a large rough projection
trochanter
relatively smaller rough projection
tuberoscity
small rounded projection
tubercle
prominent ridge
crest
low ridge
line
a pointed process
spine
articulations end of epiphysis and diaphysis
head
connection between the epiphysis and diaphysis
neck
smooth rounded or articular process
condyle
smooth grooved articular process like a pulley
trochlea
small flat articular surface
facet