Muscle tissue/system Flashcards
aponeuroses
flat sheets of tendons that anchor the muscle to skeleton of other aponeuroses
flat muscle
often have aponeuroses and parallel fibers
pennate muscles
feather-like in fascicles
fusiform muscles
spindle shaped iwth round, thick belly
convergent muscle
arise from broad area to form one tendon
quadrate muscle
has four equal sides
circular muscle
surround body opening
multiheaded muscle
have more than one head of attachment/contractile belly
myotatic reflex
resulting movement of muscle by tapping tendon
isotonic contraction
force of contraction produces movement
isotonic contraction
force of contraction does not produce movement
synergist
complements the action of a prime mover
shunt muscle
resists dislocation
Xray
dense structures are bright (radioplaque),
less dense structures are dark (radiolucent)
dark to light (air -> fat -> water and most tissues -> spongy bone -> compact bone)
CT
Xray that rotates around the body
able to reconstruct on computer
Ultrasound
can be viewed in real time
non invasive
pulses of reflected US waves
MRI
pulsed with radio waves while placed in scanner with strong magnetic field
PET
evaluates physiological organ function with bioactive isotopes that emit positrons
4 basic types of tissues
epithelium
connective
muscles
nerve
Epithelium types
simple
stratified
mucous membranes
serous membranes
connective tissue
has fibroblasts
extracellular matrix
fibers of collagenous or elastic
(blood, adipose tissue, tendon, ligaments, cartilage, bone)
Neurolgia
“Glial cells”
surround the neurons and hold them in place
supply nutrients and oxygen to neurons
destroy pathogens and remove dead neurons
