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118 Cards in this Set

  • Front
  • Back
All of the muscles of the body considered as an ____ structural group.
interrelated
There are over ____ skeletal muscles in the body
600
The muscular system assist in body ____.
Movements
The muscular system assists in the movement of materials ____.
internally (smooth muscles)
The muscular system produces ____ and ____.
heat and energy
The muscular system assist in maintaining ____ and balance.
posture
The muscular system helps protect ___ organs
internal
___% of heat comes from muscles
85%
All major organs are located behind muscles except ____ ____.
male reproductive
What are the three classifications of muscles?
Skeletal muscles, Visceral (smooth) muscles, and Cardiac muscles
Skeletal muscles is ____ and ____ muscle.
voluntary and striated
Striated means that it is a long slender ____ cells.
striped
Skeletal muscle is attached to the skeleton and ____ the skeleton's moving parts.
moves
Skeletal muscle contracts ____ in response to stimuli
quickly
Skeleton muscles are voluntary but can have ____ response. (such as scaring someone)
involuntary
Visceral (smooth) muscle are ____. (independent of will)
involuntary
Visceral muscles are ____ (has spindle shaped cells)
non-striated
Smooth muscles is found in the viscera, esp the ____, stomach, ____ ____, and blood vessels.
intestines, stomach, urinary ducts, and blood vessels
Smooth muscles contracts ____ in response to stimuli.
slowly
Cardiac muscles are ____ (no control)
involuntary
Cardiac muscles are ____ striated.
partially (smooth but striped)
Cardiac muscle is found only in the ____
heart
Cardiac muscle contracts ____ ____ in response to stimuli.
moderately fast
What is the origin for major skeletal muscles?
Where the muscles starts and the less movable end
What is the insertion for major skeletal muscles?
Where it ends and the more movable end.
What is the body (or belly) of major skeletal muscles?
main part of muscle
Skeletal muscles are enclosed in the ____, which is continuous with the fibrous structures that attach muscles to bones and other structures.
epimysium
Skeletal muscles are ____ to the structures on which they pull during contraction.
attached
Skeletal muscles may be attached ____ to the periosteum of the bone or may be attached by ____ or aponeuroses.
directly; tendons
Skeletal muscles contracts in response to ____ impulses. (natural or artificial)
electrical (natural=heart beat, artificial=electrical shock)
Skeletal muscles that move a body part usually lie ____ to the part that it moves.
proximal
Skeletal muscles moves the body caused by muscles ____ on bones.
pulling
Body movements result form coordinated actions: one muscle ____ while the other ____.
contracts; relaxes
The energy to produce movement in muscles is released from ____ ____ through metabolism.
simple sugars
excitability (being pinched)
irritability
ability to transmit impulses
conductivity
ability to stretch and remain stretched
extensibility
ability to former length when no longer stretched
elasticity
ability to contract or shorten
contractility
slight tention on muscle even when at rest
tone
away from midline
abductor
towards the midline
adductor
lifting a part
levator
lowering a part (sit)
depressor
bending at a joint
flexor
straightening at a joint
extensor
medial rotation-rotating on an axis
rotator
circular motion without moving rest of the body
circumduction
move forward
protractor
move backward
retractor
turn upward
supinator
turn downward
pronator
constriction and closes a body part (urethra and anal sphincter)
sphincter
making a part more ridged (tense muscles)
tensor
generates majority of force to acomplish a movement
prime-mover muscle
muscle responsible for moving a part
agonist
directly opposes the prime mover muscle
antagonist
assist in movement (all other muscles around the one that working)
synergist
stabilizing a joint
fixator
facial expressions, chewing, swallowing, blinking, speaking
head and face muscles
rotate, side to side, front to back
neck muscles
allows you to stand erect, turn, and bend
back muscles
respiration, moves neck, arms, and trunk
chest muscle
supports internal organs and helps with respiration, and assist in eliminating waist
abdominal muscles
defecation and urination
perineal muscles
deltoid
moves arm at shoulder
pectoralis major
draws arm across chest, flexes arm
serratus anterior
rotates scapula and raises shoulders
intercostals
elevates and depresses the ribs
latissimus dorsi
brings arms down forcefully as in swimming, rowing, and climbing
diaphragm
contracts and relaxes for inhalation and exhalation
External and Internal oblique
compresses abdomen and rotates it laterally
transverse and rectus abdominis
compresses abdomen and rotates it laterally
levator ani
forms pelvic cavity and supports those organs
deep transverse perinei
forms floor of pelvic cavity (stop urinating)
Biceps brachii
flexes arm and helps supinate hand and forearm
triceps brachii
extends forearm and has 3 heads
brachialis
flexes forearm and strongest flexer at elbow
brachioradialis
flexes forearm and helps supinates hand and forearm
carpi muscles
controls hand movements
digitorum muscles
controls finger movements
pollicis muscles
thumb movements
Gluteus maximus, meduis, and minimus
help maintain errect posture and help rotate thighs inward and outward
sartorius
rotates thigh laterally and crosses legs
quadriceps femoris
extends leg
adductor (in legs)
presses thighs together or rotates laterally
hamstring
flexes leg and extends the thigh
gastrocnemius
extends the foot
tibialis anterior
flexes foot
peroneus longus
everts the ankle (rolls the ankle)
soleus (leg)
inverts the ankle
Flexor and Extensor digitorum
flexes and extends the toes
Tendon surgery is typically only done because of ____, which complicates the surgery.
trauma
Tendons ____ when partial/totally rupture, which complicates suturing.
frayed
Because tendons are slow to heal, the type of suturing and suturing materials is ____
important
Stainless steel, polyester, polypropylene, and ____ are types of suture material for suturing tendons
nylon
To suture a torn tendon the material has to be ___ with no elasticity
strong
Typically a ____ __ is the suturing technique of choice
figure 8
Surgeons try to ____ fibers when entering a cavity, they try not to ____ through muscle, but at times, it is necessary.
separate; cut
Blunt dissection is used to separate the fibers, either with their ____ or ____.
fingers or retractors
When the fibers of muscles have been separated, suturing is ____ necessary, because they will ____ approximate.
not; naturally
If suturing a muscles, ____ ____ and polypropylene are best.
stainless steal
tenosynovitis
inflammation of a tendon
atrophy
muscle weakness due to lack of use
cramps
painful involuntary twitching in a muscle
convulsions
abnormal uncoordinated contractions of muscles
fibrillation
muscle flexing at unexpected or undesired times (not enough K)
strain
when muscle fibers have been over streched or torn
myosistis
inlammed muscle tissue
fibromyositis
inflammed tendon
contusion
bruise
myalgia
muscle pain
muscular dystrophy
disease that leads to skeletal muscle atrophy
myasthenia gravis
autoimmune disease that attacks muscle cells
hernia
weakening in muscle wall that allows abdominal contents to come through
tetanus
inability of muscles to relax due to presents of a toxin
botulism
infection by an organism that releases a toxin that prevents muscle contraction
carpal tunnel syndrome
ligament that is cutting or putting pressure on medial nerve.