Physical and Cognitive development in middle childhood Flashcards
general trends of body growth - 4
6-11 yr
- shift in weight and height, girls move higher
- 8-9 some girls might move into adolescense
- growth spurt for girls tend to happen before puberty
- diff in body composition - hormones for sexual maturation
proportions of body growth - 3
longer limbs and slim out
smaller and thinner
temporary to permanent teeth
myopia 3
near sightedness
- light hits vitreous (liquid) before the retina which cant be appropriately turned into electrical signals
- irregularly shaped eyeballs, too long - pressure of fluids inside are wonky
- inability to see objects at a distance
hyperopia -3
light focus is too deep and hits behind the retina
- eyeball is too short/lens is not pliable enough to be round enough to refract the light
- difficulty focusing on near objects
presbyopia
late onset of hyperopia - lens not flexible enough/shortened eyeball so the focus falls behind the retina - you’re less plastic as you age and physcial structures break down
astigmatism - 2
irregular shaped cornea - football shaped
light rays focus on two points on retina vs one
- refract in multiple rays
- can be corrects, on either eye but difficult because we dont know how you brain interprets it - horizontal/vertical/fuzziness
cataracts - 2
degeneration of natural lens - go opague - breakdown of the structure because of protein build up
four kinds of cataracts
senile - age related and build up of products
congenital - chromosomal abnormality - born with it
secondary - results of meds - second most common
traumatic - blunt force trama to head/eye - inability to produce proteins
how to fix cataracts
take out the lens and put in a new one
glaucoma reason
we dont know why
what happens in glaucoma
build up of pressure fluid inside eye/retinal wall which causes optic nerve breakdown
cure for glaucoma
no cure - second cause of blindness - relief or slow it down
symptom of glaucoma
gradual loss of peripheral vision - tunnel vision
two types of glaucoma
open vs closed
closed - 6 m, fastest moving form of blindness
open - progressive, no one realizes until its bad
disorders of the ear can happen from
trauma/infection
3 types of hearing loss
conductive
cochlear
presbycusis
conductive hearing loss - 3
outer/middle ear - structures of the body cannot conduct the waves/pass the vibrations on through the middle ear (tympanic membrane) -
lose flexibility and you need larger waves - same with ossicles
- defective because of continous exposure to excessive amts of noise
cochlear hearing loss - 2
inner ear
electrical signal - hairs sensitive to lots of things - ear infections may damage them
presbycusis - 3
age related - conductive or chchlear
breakdown of auditory structures
males more suceptible till 75, then the same risk
tinnitus - 2
ringing in the ear - auditory perceives ringing sound, sometimes combined with another hearing disorder
- temporary from diff causes, coming out of a loud environment
unpleasant hearing
interpret sound to be very unpleasant
- hyperacusis
loudness sensitivity
hyperacusis
overstimulation during normal sounds - how the brain interprets it
loudness sensitivity
sensory ____ due to cochlear
you hear things excessively in greater volume
why do children get more ear infections
shorter hearing tubes - bacteria