☀️The Nervous System

Question 1

What is co ordination carried out by

Answer 1

The nervous and endocrine system

Question 2

Stimulus

Answer 2

Anything hat causes a reaction in an organism

Question 3

Nervous system relies on

Answer 3

Electric signals carried out by neurons

Question 4

Brain

Answer 4

Keeps check on internal organs and activities

Question 5

What is the system outside the nervous system called

Answer 5

Peripheral nervous system

Question 6

Neuron

Answer 6

Nerve cell

Question 7

Endocrines are carried by

Answer 7

The blood

Question 8

Endocrines messages are carried

Answer 8

Chemically

Question 9

Endocrines speed of transmission is

Answer 9

Slow

Question 10

Nervous messages are carried

Answer 10

Electrically

Question 11

Nervous carried by

Answer 11

Nerve cell

Question 12

Nerve Speed of transmission is

Answer 12

Rapid

Question 13

Equation

Answer 13

Stimulus- receptor - process - effector - Responce

Question 14

Responce is

Answer 14

A nerve cell that detects a stimulus

Question 15

Cell body contains

Answer 15

The nucleus and other organelles

Question 16

Cell body produces

Answer 16

Neurotransmitter chemicals

Question 17

Dendron

Answer 17

Recieves info and carries it TOWARDS the cell body

Question 18

Axon

Answer 18

Conducts impulses away from the body

Question 19

Dendrites

Answer 19

Carry impulses to a cell body

Question 20

Schwann cell

Answer 20

Form a myelin sheath

Question 21

Myelin sheath

Answer 21

Insulates the neuron from electrical impulses in other neurons

Question 22

Name the 3 types of neuron

Answer 22

Sensory neuron
Interneuron
Motor neuron

Question 23

Sensory neuron

Answer 23

Carries messages from the sense organs to the cns

Question 24

Interneuron

Answer 24

Connects sensory and motor neurons within the cns

Question 25

Motor neurons

Answer 25

Careies impulses from cns to muscles and glands

Question 26

Synapse

Answer 26

Where two neurons come into contact

Question 27

Synaptic clef

Answer 27

Gap between two neurons

Question 28

Neutrotransmitters

Answer 28

Carry signal from one neuron to another

Question 29

How many neurons is the brain compsoed of

Answer 29

100 billion

Question 30

Brain is protected by the

Answer 30

Skull, 3 membranes and cerebrospinal fluid

Question 31

Cerebrum

Answer 31

Our conscious brain

Question 32

Hypothalum

Answer 32

Controls internal environment in our body

Question 33

Pituitary gland

Answer 33

Is the master gland

Question 34

Spinal cord

Answer 34

Carries impulses to and from the brain and controls reflexes

Question 35

Each spinal nerve has

Answer 35

A dosal root and a ventral root

Question 36

Dorsal root carries

Answer 36

Information into the spinal cord from the senses

Question 37

Dorsal root ganglion contains

Answer 37

Cell bodies of sensory neurons

Question 38

Ventral root carries

Answer 38

Intro out if the spinal cord to the muscle and glands

Question 39

Reflex action

Answer 39

Is a quick automatic response to a particular stimulus

Question 40

Reflex action

Answer 40

Automatic responce to a stimulus

Question 41

Parkinsons disease is caused by

Answer 41

Lack of dopamine in the brain

Question 42

What happens when someone has parkinsons disease

Answer 42

Muscles become rigid, slow movement and persistent shaking

Question 43

Parkinsons disease treatment

Answer 43

Giving L dopa can reduce the symptoms (but no means of preventing it)