Week 5

Question 1

Which of the following parts of a neuron is responsible for conducting an action potential towards another cell

a) dendrites
b) cell body
c) axon
d) nucleus
e) bipolar process

Answer 1

c) axons

Question 1

Which of the following statements best describes the function of the the autonomic nervous system?

a) conducts involuntary impulses from the central nervous system to cardiac muscle, smooth muscle and glands
b) integrates information and control the functioning of the nervous system
c) communication between the central nervous system and the rest of the body
d) conducts voluntary impulses from the central nervous system to skeletal muscles
e) conducts sensory information to the brain

Answer 1

a) conducts involuntary impulses from the central nervous system to cardiac muscle, smooth muscle and glands

Question 2

which of the following structures is part of the peripheral nervous system?

a) diencephalon
b) trigeminal nerve
c) optic tract
d) spinal cord
e) geniculate nucleus

Answer 2

b) trigeminal nerve

Question 3

a person who has sudden problems with speech most likely has a problem in the _____

a) cerebrum
b) hypothalamus
c) cerebellum
d) thalamus
e) mid-brain

Answer 3

a) cerebrum

Question 4

a person who has problems with autonomic and endocrine functions, most likely has a problem in which of these structures?

a) hypothalamus
b) thalamus
c) cerebrum
d) cerebellum
e) mid brain

Answer 4

a) hypothalamus

Question 5

which of the following structures is pairing with the correct branch(es) of the autonomic nervous system?

a) chain ganglia - parasympathetic only
b) short postganglionic fibre - sympathetic only
c) origin in the thoracic spinal cord - parasympathetic only
d) acetylcholine receptors at the post ganglionic fibre - both
e) longer postganglionic fibre both

Answer 5

d) acetylcholine receptors at the post ganglionic fibre - both

Question 6

Which of the following is the deepest of the meninges?

a) arachnoid mater
b) dura mater
c) cerebral cortex
d) fourth ventricle
e) pia mater

Answer 6

e) pia mater

Question 7

During resting, which of the following ions is more abundant inside a neuron (contained to the extracellular fluid)

a) HCO3
b) Na+
c) Ca2+
d) Cl-
e) K+

Answer 7

e) K+

Question 8

Which of the following is TRUE of the myelin sheath?

a) it speeds action potential conduction along an axon
b) it is a continuous insulating
c) myelinated axons contain. more sodium/potassium pumps
d) it is responsible for the colour of grey matter in the CNS
e) all of the above

Answer 8

a) it speeds action potential conduction along an axon

Question 9

Which of the following is NOT required for neurotransmitter release?

a) depolarized membrane at the axon terminal
b) calcium voltage-gated channels
c) neurotransmitter containing vesicles in the cytoplasm of the axon
d) production of neurotransmitter peptides at the rough ER
e) ligand-gated ion channels in the postsynaptic membrane

Answer 9

e) ligand-gated ion channels in the postsynaptic membrane

Question 10

Define the resting membrane potential, in words as well as numerical value?