exam 1 Flashcards
anatomical position (4)
body standing erect
facing observer
arms at side
palms facing forward
sagittal plane is aka
median plane is aka
sagittal (median) plane is where
cuts body into left and right
coronal plane aka
frontal plane aka
coronal (frontal plane) is where
cuts body into posterior and anterior
transverse plane aka
horizontal or axial plane aka
epithelial tissue covers…
sheet covering external surface of the body (skin)
lines tubes and passageways to exterior
covers internal body cavities
functions of epithelial tissue (4)
protection, secretion, sensation, absorption
what does connective tissue do
binds structures together, supports body, aids in body maintenance
types of connective tissue
loose and dense
areolar tissue and adipose tissue are what type of tissue
loose connective tissue
loose connective tissue…
binds parts together
dense connective tissue can be (2)
fibrous or elastic
types of dense connective tissue (5)
tendons
aponeurosis
ligament
fascia
dermis
tendon attaches… (3)
muscle to bone
muscle to cartilage
muscle to muscle
what is aponeurosis
like a sheet of tendon
similar to fascia
types of aponeurosis (2)
abdominal aponeurosis
plantar fasciitis
ligament connects… (3)
bone to bone
bone to cartilage
cartilage to cartilage
what is fascia
layer of separation between muscles and other structures
is fascia thinner or thicker than aponeurosis
thinner
how can fascia contain infection
bedsheets example
types of cartilage (3)
hyaline
elastic
fibrous
calcified connective tissue
bone
example of elastic cartilage
eustachian tube
epiglottis
all of the _______ __________ in the body is involved in the production or reception of sound
elastic cartilage
calcified connective tissue
bone
cartilage covers the…..
articular facets of joint
vertebral column, skull, ribs, and hyoid bone are parts of the _____ skeleton
axial
3 types of joints
fibrous (immovable)
cartilaginous (yielding)
synovial (moveable)
skeletal bones are functionally connected at _______ or _______
articulations or joints
what connects two bones almost in direct contact
fibrous joint
ex of fibrous joints
skull sutures
nasal bones
teeth
cartilaginous joints ex
pubic symphysis
ribs to sternum
vertebra
synovial joints ex
shoulder (ball & socket)
ribs to vertebra
finger joint (hinge)
what type of joints is the most common
synovial
______ ________ performs mechanical work by contracting
muscle tissue
types of muscle tissue (3)
smooth
striated
cardiac
striated aka
skeletal/voluntary
what muscle is involuntary
smooth and cardiac
ex smooth muscle
stomach
intestines
blood vessels
combination f=of striated and smooth muscle
cardiac muscle
attachment that is fixed or moves less
origin
structure being acted upon or moved via contraction
insertion
joint =
fulcrum (F)
where muscle is attached and how its moved
force/effort arm (E)
what is being moved
load arm (origin) (L)
force arm > resistance arm
mechanical advantage
force arm < resistance arm
mechanical disadvantage
class 1 ex
neck extension arm extension (tricep)
may operate with mechanical advantage or disadvantage
class 1
always operates with a mechanical advantage
class 2
class 2 ex
jaw opening against resistance
2
load is between effort arm and fulcrum
class 2
fulcrum is in between effort arm and load arm
class 1
most common lever system
class 3
always operate with mechanical disadvantage
class 3
class 3 ex
arm flexion
head bending forward
flexion
head bending back
extension
retrusion
jaw going back
protrusion
jaw going forward
abduction
away from body
adduction
toward body
vascular tissue
fluid tissues such as blood or lymph
when a muscle fiber is stimulated, it ….
shortens
motor unit
array of one motor neuron and its muscle fiber
motor endplate
junction of final motor neuron and muscle fiber
innervation ratio
number of muscle fibers innervated by single motor neuron
lower or higher innervation ratio for finer movements
lower
ways to build up force within a muscle (3)
firing rate
recruitment of motor units
recruitment of other muscles
agonist
main muscle involved in moving muscle
fixator
contracts to steady a body part while movement is happening
synergist
muscle that compliments the action of the agonist
antagonist
acts in opposition of the agonist