Nervous system IV Flashcards
What does the Autonimic Nervous system control?
It control the smooth muscles, cardiac muscles and glands.
What are the names of the two neurons that go to the efector in the ANS?
Preganglionic and postganglionic.
Any neuron can be distinguished by the type of nt released, give two examples.
Cholinergenic= ACh
Adrenergic= Norepinephrine
what are the two divisions of the ANS?
SNS= Sympathetic nervous system
PSNS= Parasympathetic Nervous system
what is the function of the SNS?
it prepares the body for action. This is where the fight or flight response is.
what is the function for the PSNS?
It makes the body relax; the rest and digest funtion.
Can an organ be innervated by just the SNS or just the PSNS? or does it need both?
for the most part they have both SNS and PSNS but it is possible to see only one of the two.
how do the SNS and PSNS work together?
they have opposite actions. so the SNS excites whatever is going on and the PSNS inhibits whatever is going on
In the Pupils of the eye, what are the SNS and the PSNS doing?
SNS is dilating and the PSNS is constricting.
In the GI tract, what is the SNS and PSNS doing?
the SNS in lowering motility and the PSNS is increasing motility.
name a gland that is not innervated by the PSNS.
Sweat glands.
what are the following controlled by? PSNS or SNS?
- -Ejaculation
- -Erection
- -Lubercation
Ejaculation is sns, Erection is PSNS and so is lubrication.
what kind of cerebral input would cause blushing? and how would this occur?
so because the Hypothalamus is involved in emotion, lets say an emotional stimulus would cause you to blush, it would happen autonomically… cause you can’t blush on control.
Name three types of movements:
Reflex movements, voluntary movements, and rhythmic movements.
what are the two type of reflexes? and what do they require?
spinal refexes: which require sensory input
Postural reflexes: which require sensory input from the proprioceptors, eyes and inner ear.
What is the most complex type of movement?
Voluntary movement.
what is an example of a rhythmic movement?
walking running (muscle memory)
Which cortex is language situated for most people?
left cortex
which cortex is the emotional components of language?
in the right cortex at about the equivalent area where language is .
what makes up the language implementation system?
Wernike’s Area, Brocas area and the basal nuclei.
As a team, what does the Wernikes area, Brocas area and basal nuclei do together?
I analyzes the incoming and produces outgoing word sounds and grammatical structure of language.
what does the primary motor cortex initiate?
planned contractions
what does damage to Wernikes area do?
If you damage Wernikes area you wont be able to understand spoken or written words. You’ll be able to speak but words are either meaningless or all mixed up.
What happens if you damage the Broca’s Area?
you’ll be able to understand words but it will be difficult to speak or write sensibly.
