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Flashcards in Wk4 Autonomic Nervous System Deck (20):
0

What is ganglion

No, it's not a gang of lions
It's a collection of nerve cell bodies outside the CNS

1

Define synapse

It's the junction between nerve cells

2

And what's a neurotransmitter

It's the chemical released at synapse and it sounds totally bad ass.

3

Define the autonomic nervous system

So, each moment, signals flood from sensory organs into the cns, and the autonomic nerves make adjustments necessary to best support body activities

4

What are some body activities that the ANS may help support

Blood flow, heart and breathing and blood pressure

5

Define the differences between parasympathetic and sympathetic

Parasympathetic- craniosacral origin "rest and digest" so me rn.

Sympathetic- thoracolumbar origin "fright, fight or flight"

6

What is the ans controlled by

By the hypothalamus and medulla onlongata

7

The ans co ordinates visceral effectors such as ________, _______, ________, _________

Cardiovascular
Respiratory
Digestive
Urinary and reproductive

8

So what are the 2 divisions of the ans

Parasympathetic and sympathetic

9

If I was terrified of ugly cockroaches and one ran over my foot, what involuntary responses might my body have

Become super alert, metabolic rate, and muscle function would increase, heart rate and blood pressure would increase.
And a decrease in my GIT and urinary functions might occur.

10

What is autonomic tone

Resting level of spontaneous autonomic activity

11

When it comes to the structure of ans , the peripheral motor paths have how many consecutive motor fibres?

2!

12

Is the first fibre pre or post synaptic?

It's pre synaptic
And synapses at the ganglion

13

In the parasympathetic division- Pre ganglionic fibres are short

True or false

False!
They are long and post ganglionic fibres are short.

14

Nerves that release the neurotransmitter acetylcholine are generally known as __________ _______, and those that release noradrenaline are called ______ ________.

Nerves that release the neurotransmitter acetylcholine are generally known as CHOLINERGIC NERVES and those that release noradrenaline are called ADRENERGIC NERVES.

15

Normally all parasympathetic nerves discharge acetylcholine (ACh) and nearly all postganglionic sympathetic nerves release noradrenaline (NAd)

True or false

True

16

The neurotransmitter ACh is always the first synapse outside the spinal cord

TRU or false

Truuuuuuuu

17

The first receptor is always WHAT

Nicotinic (gin n tonic)

18

The second receptor is WHAT

Muscarinic

19

The NT at the second synapse in the sympathetic division is _______ and the receptor is ______

The NT at the second synapse in the sympathetic division is noradrenaline and the receptor is ADRENERGIC