Nervous System

Question 1

What is coordination carried out by

Answer 1

Nervous system and endocrine system

Question 2

What is the nervous system

Answer 2

Allows an organism to respond to stimuli in its internal or external environment

Question 3

Stimulus

Answer 3

Change in your environment

Question 4

What are the electrical signals carried out by

Answer 4

Specialised cell neurons

Question 5

Central nervous system

Answer 5

Brain and spinal cord

Question 6

Peripheral nervous system

Answer 6

Nerves branching out from the cns to all parts of the body

Question 7

Receptor

Answer 7

A nerve cell that detects a stimulus

Question 8

Effector

Answer 8

Muscle/ gland that carries out a Responce

Question 9

Neuron

Answer 9

A specialized cell that carries electrical messages around the body

Question 10

Impulse

Answer 10

Electrical message carries by a neuron

Question 11

Three types of motor neuron

Answer 11

Sensory
Inter
Motor

Question 12

Sensory neuron Carries messages from

Answer 12

Sense organs to cns

Question 13

Interneuron connects

Answer 13

Sensory and motor neurons

Question 14

Interneuron carry messages

Answer 14

Within the cns

Question 15

Motor neurons carries

Answer 15

Impulses from the cns to muscles and glands

Question 16

Mitochondria

Answer 16

Produce energy

Question 17

Cell body contains

Answer 17

Nucleus and mitochondria

Question 18

Cell body produces

Answer 18

Neurotransmitter chemicals

Question 19

Dendrite

Answer 19

Short fiber

Receives info and carries it towards the cell body

Question 20

Axon

Answer 20

Long fiber

Conducts impulses away from the cell body

Question 21

Short fiber

Answer 21

Dendrite

Question 22

Long fiber

Answer 22

Axon

Question 23

Schwann cells form

Answer 23

Myelin sheath

Question 24

Myelin sheath

Answer 24

Protects the neuron

Question 25

Neurotransmitter swellings

Answer 25

Release chemicals which carry the impulses from one neuron to the next

Question 26

Synapse is a region where

Answer 26

Two neurons come into close contact (but don’t touch)

Question 27

Synaptic cleft

Answer 27

Gal between two neurons

Question 28

Eg of a neuro transmitter

Answer 28

Acetylcholine

Question 29

What clears a neurotransmitter from the synaptic cleft

Answer 29

Cholinesterase

Question 30

Why are neurons not in direct contact at a synapse

Answer 30

To prevent continuous stimulation

Question 31

How many neurons in the Brain

Answer 31

Over 1 billion

Question 32

What does the brain protect

Answer 32

``` Three membranes (meninges) Cerebrospinal fluid ```

Question 33

How many pairs of spinal nerves in a spinal cord

Answer 33

33

Question 34

What does each spinal nerve have

Answer 34

Dorsal and ventral root

Question 35

Dorsal root consists of

Answer 35

Sensory neurons - carry info to spinal cord

Question 36

Dorsal root ganglion

Answer 36

Swelling that consists of cell bodies of sensory neurons

Question 37

Central root consists of

Answer 37

Motor neurons - carry info to spinal cord, muscles and glands

Question 38

Reflex action

Answer 38

Quick involuntary response to a stimulus

Question 39

Reflex arc

Answer 39

Pathway the reflex takes

Question 40

Route taken along the reflex arc

Answer 40

``` Receptor Sensory neuron Spinal cord Interneuron Motor neuron Effector ```

Question 41

Cause of Parkinson’s disease

Answer 41

Failure to produce dopamine

Question 42

Symptoms of Parkinson’s disease

Answer 42

Trembling hands

Question 43

What mimics dopamine

Answer 43

Levadopa