Peripheral nervous system

Question 1

Function of afferent neurons?

Answer 1

Convey info from sensory receptors to CNS
First order neurons

Question 2

What carries info from sensory receptors to CNS?

Answer 2

Afferent neurons

Question 3

Function of efferent neurons?

Answer 3

Convey info from CNS to muscles, glands, tissues

Question 4

What conveys info from CNS to muscles, glands, tissues?

Answer 4

Efferent neurons

Question 5

What is nervous system split into? Draw?

Answer 5

Question 6

What is CNS split into?

Answer 6

Brain
Spinal cord

Question 7

What is peripheral nervous system split into?

Answer 7

Autonomic nervous system
Somatic nervous system

Question 8

What is autonomic nervous system split into?

Answer 8

Sympathetic
Parasympathetic

Question 9

What is para and sympathetic system part of?

Answer 9

Autonomic nervous system

Question 10

What is peripheral system divided into?

Answer 10

Somatic
Autonomic

Question 11

What is function somatic nervous system?

Answer 11

Voluntary action

Question 12

What does somatic nervous system innervate?

Answer 12

Skeletal muscle
Muscle excitation

Question 13

What is somatic nervous system made of?

Answer 13

Single neuron between CNS and skeletal muscle cell

Question 14

Where are cell bodies of somatic nervous system located? (2)

Answer 14

Brainstem
Ventral horn spinal cord

Question 15

Are neurons myelinated in somatic nervous system?

Answer 15

Yes

Question 16

What neurons cause contraction muscle?

Answer 16

Motor neurons

Question 17

What neurotransmitter is involved in somatic nervous system?

Answer 17

Acetylcholine (Ach)

Question 17

What neurotransmitter is involved in somatic nervous system?

Answer 17

Acetylcholine (Ach)

Question 18

What is function autonomic nervous system?

Answer 18

Involuntary ns

Question 19

What does autonomic ns innervate?

Answer 19

Smooth and cardiac muscle, glands

Question 20

How many neurons in autonomic ns?

Answer 20

2 neuron chain
Between CNS and effector organ

Question 21

Where is cell body of first neuron in autonomic ns?

Answer 21

Cell body in CNS
Synapse occur outside CNS

Question 22

Is autonomic excitatory or inhibitory?

Answer 22

Both

Question 23

What two divisions of autonomic nervous system?

Answer 23

Sympathetic
Parasympathetic

Question 24

What neurotransmitters are used in autonomic ns?

Answer 24

Ach (excitatory) Noradrenaline (inhib)

Question 25

What is sympathetic ns part of?

Answer 25

Autonomic ns

Question 26

Function of sympathetic ns?

Answer 26

Fight or flight

Question 27

Where does sympathetic ns leave CNS?

Answer 27

T1-L2

Question 28

In sympathetic ns what neurotransmitter/receptor used at preganglionic synapses?

Answer 28

Nicotinic receptor Ach

Question 29

In sympathetic ns what neurotransmitter/receptor used at effector cell?

Answer 29

Adrenergic receptor Noradrenaline

Question 30

Give examples of sympathetic ns function?

Answer 30

Increased heart rate Increased force of heart contraction Vasoconstriction Bronchodilation Reduces gastric motility Sphincter contraction Male ejaculation

Question 31

What effect does adrenal glands have on sympathetic ns? Eg

Answer 31

Amplify Release adrenaline- increase HR and BP

Question 32

What is parasympathetic ns part of?

Answer 32

Autonomic ns

Question 33

What is function parasympathetic ns?

Answer 33

Rest and digest

Question 34

What cranial nerves are parasympathetic?

Answer 34

1, 3, 7, 9

Question 35

What neurotransmitter used in parasympathetic ns?

Answer 35

ACh

Question 36

What receptor is present at preganglionic synapse?

Answer 36

Nicotinic receptor

Question 37

What receptor present at effector cell synapse?

Answer 37

Muscarinic receptor

Question 38

List effect parasympathetic nervous system?

Answer 38

Decreased heart rate Decreased force of heart contraction Vasodilation Bronchoconstriction Increased gastric motility Sphincter relaxation Male erection

Question 39

What is ns of GI tract?

Answer 39

Enteric nervous system

Question 40

What is enteric nervous system?

Answer 40

Nervous system of GI tract

Question 41

State differences between autonomic and somatic nervous sytem

Answer 41

Question 42

Answer 42

Question 43

Outline diff nervous sytems

Answer 43