Nervous System Flashcards Preview

Anatomy - nervous system and special senses > Nervous System > Flashcards

Flashcards in Nervous System Deck (14)
Loading flashcards...
1

What is the Peripheral Nervous System?

The nerves coming off the brain and spinal cord

2

What is the Central Nervous System?

Comprising the brain and spinal cord

3

What is the Autonomic Nervous System?

Controls the body's involuntary activities eg beating heart, peristalsis

4

Function of the Cerebellum

It is responsible for the coordination of movement and fine control of limb movement

5

What is the structure of the neuron that carries the nerve impulses away from the cell body?

Axons

6

What happens at the synapse?

An area of communication between nerve cells or between a motor nerve cell and a muscle fibre

7

What is the name of the tissue that protects the CNS?

The Meninges - broken into 3 layers

8

What are the three layers of the Meninges?

Dura Mater - Outer layer, tough
Arachnoid - Middle layer
Pia Mater - The inner layer, delicate

9

What is the CSF and where is it found?

A clear fluid produced by the brain, that surrounds the tissue of the brain and spinal cord. Found in the subarachnoid space (space between arachnoid and pia mater)

10

What is the reflex arc?

A rapid autonomic response to stimuli by an organ or system that does not involve the brain for it's initiation. e.g touching a hot object and quickly pulling away

11

What is the Sympathetic system?

It prepares the body for emergencies - fight or flight response. It accelerates the heartbeat, dilates the bronchioles, dilates the pupils, slows gut movements and stimulates adrenal glands

12

What response is a result of adrenalin and non adrenalin?

Fight or Flight response

13

What are the supporting nerve cells?

Glial cells

14

What is the Parasympathetic system?

The pathways come from the vagus nerve, plus other cranial and spinal nerves. It slows the heart rate, constricts bronchioles, constricts pupils