Which of these is not one of the four important regions found in every neuron?

Answer the following questions and then press 'Submit' to get your score.

Question 1

The vagus nerve regulates major elements of which part of the nervous system?

a) Parasympathetic nervous system

b) Enteric nervous system

c) Sympathetic nervous system

d) Central nervous system

Question 2

Which of these is not a feature of postganglionic neurons in the sympathetic nervous system?

a) Originating distal to the effector organ

b) Unmyelinated

c) Short

d) Noradrenergic

Question 3

Acetylcholine is synthesised and packaged in the presynaptic terminal before being released to act on the postsynaptic receptors. Which of these statements about that process in parasympathetic postganglionic neurons is not true?

a) Acetylcholine is synthesised by the action of choline-o-acetyltransferase on choline and acetyl coenzyme A.

b) Release of neurotransmitter is triggered when voltage sensitive calcium channels open to allow the influx of calcium.

c) The released acetylcholine acts on postsynaptic nicotinic receptors.

d) Choline is recycled by being taken back up into the presynaptic terminal.

Question 4

Which of the following describes salbutamol, a β2-adrenoceptor agonists?

a) Direct acting sympathomimetic.

b) Indirect acting sympathomimetic.

c) Direct acting parasympathomimetic.

d) Indirect acting parasympathomimetic.

Question 5

Activation of the sympathetic nervous system leads to the 'fight and flight' response. Which of these is not part of that process

a) Vasodilatation in skeletal muscle

b) Sweating

c) Bladder relaxation

d) Increased gut motility

Question 6

Which of the following is not caused by the activation of the sympathetic nervous system?

a) An increase Ca2+ release in cardiomyocytes.

b) An increase in cardiac output.

c) An increase in blood pressure.

d) A decrease in heart rate.

Question 7

Stimulation of which one of the following receptors causes vasoconstriction?

a) β1-adrenoceptors

b) β2-adrenoceptors

c) α-adrenoceptors

d) Nicotinic receptors

Question 8

Sympathetic innervation of the liver regulates which function?

a) Formation of glucose from glycogen

b) Bile synthesis and production

c) Iron storage

d) Endocrine function

Question 9

Why is the adrenal gland unique in its autonomic innervation?

a) It is innervated by parasympathetic cholinergic preganglionic neurons.

b) The postganglionic neurons are cholinergic rather than noradrenergic despite being part of the sympathetic nervous system.

c) The post-synaptic response is mediated via muscarinic acetylcholine receptors.

d) It is directly innervated by the spinal cord without passing through ganglia.

Question 10

What is NANC neurotransmission?

a) Neurotransmission in the autonomic nervous system involving noradrenaline and neuropeptide Y co-transmission.

b) Neurotransmission in the autonomic nervous system that does not involve acetylcholine or noradrenaline.

c) Neurotransmission in the enteric nervous system that does not involve acetylcholine or noradrenaline.

d) Co-transmission in the autonomic nervous system of both neuropeptide Y and acetylcholine.

Which of the following neurotransmitters is found in most parts of the brain quizlet?

Which of the following neurotransmitters is found in most regions of the brain and is considered inhibitory?

Is an important link between the brain and the pituitary gland and is involved in feeding drinking temperature regulation?

Which chemical pathway appears to be important?