NEURO & SENSORY systems pp pt2 Flashcards
Cerebrum is the largest portion of the brain in humans (T/F)?
true
what does the cerebrum do?
Communicates with, and coordinates the activities of, the other parts of the brain
what divides the cerebrum?
Longitudinal fissure divides the cerebrum into left and right cerebral hemispheres
Alcohol and drugs can adversely affect neurological development (T/F)?
true
Alcohol and drugs can adversely affect neurological development in?
in utero (embryo & fetus In newborns
Alcohol and drugs can damage the brain and neurological system in adult users and abusers. (T/F)?
true
Drug abuser?
a person who takes a drug at a dose level that increases the potential for a harmful effect
Addiction?
when more of the drug is needed to get same effect
Withdrawal?
experienced when addict stops taking the drug
The human ear has what two functions?
Hearing
Balance or equilibium
The sensory receptors are located in?
the inner ear
The receptors consist of___with____
hair cells with stereocilia (long microvilli)
The receptors are sensitive to mechanical stimulation, and are therefore referred to as?
mechanoreceptors
Three parts that make up the anatomy of the ear?
outer, middle, and inner ear
Outer ear contains what 3 things?
Pinna (external flap)
Auditory canal - lined with fine hairs and glands
Glands secrete earwax to guard the ear against invadors
Middle ear contains whats?
Middle ear
begins at tympanic membrane (ear drum)
ends at a bony wall containing the oval & round windows
ossicles (three small bones) are between the tympanic membrane and the oval and round windows: malleus [hammer]; incus [anvil]; stapes [stirrup]
Auditory tube (eustachian tube) extends from the middle ear to the nasopharynx
Inner ear contains what?
Inner ear (filled with fluid) has three areas
Semicircular canals (equilibrium)
Vestibule (equilibrium)
Cochlea (hearing) resembles the shell of a snail
The important thing that the inner ear contains?
choclea
the middle ear contains what three bones? where are they located?
ossicles, they are between the tympanic membrane and oval and round windows
malleus
hammer
incus
anvil
staper
stirrup
