Font size
WorksheetsBIO270 Nervous System
Total questions: 27
Worksheet time: 15mins
Identify two types of synapses
chemical synapse
electrochemical synapse
electrical synapse
mechanical synapse
Identify the correct sequence of the formation of an action potential
resting state --> depolarisation --> action potential rising phase --> action potential falling phase --> undershoot
depolarisation --> resting state --> action potential rising phase --> action potential falling phase --> undershoot
resting state --> depolarisation --> action potential falling phase --> action potential rising phase --> undershoot
resting state --> undershoot --> action potential rising phase --> action potential falling phase --> depolarisation
Identify the correct pairs of myelinated neurons *
Schwann cell - PNS
Schwann cell - CNS
oligodendrocytes - PNS
oligodendrocytes - CNS
Planarians have cephalisation at the anterior part consisting of the brain and the eyespot
True
False
The following are true about stages of information processing, EXCEPT
sensory input
motor input
integration
motor output
The nervous system of cnidarians helps to control the expansion and contraction of the gastrovascular cavity
True
False
How to differentiate the nervous systems between various kinds of animals?
based on the organisation of the neurons
based on the organisation of the tissues and cells
based on the organisation of the stomach
all of the above
"Area where signals travel down the axons are generated" refers to
node of ranvier
dendrite
schwann cell
axon hillock
Sponges have a nervous system *
True
False
Ganglia are clusters of neurons in arthropods
True
False
Dendrites transmit signals
True
False
How do neurons communicate in long-distance?
using chemical signals
using electrical signals
using potential signals
using mechanical signals
"Receives message from interneurons and trigger output, such as in muscles" refer to
sensory neurons
interneurons
receptors
motor neurons
Identify the FALSE statement
axon = transmits action potential
synapse = communication with glands
axon hillock = initiation of action potential
dendrites = input
Nerve impulse is carried by neurotransmitters *
True
False
A synapse is the junction between
a neuron and another neuron
a neuron and receptor cells
a neuron and muscle
receptor cells and effector cells
Acetylcholine & dopamine are examples of
neurotransmitters
secretions from gland cells
synapses
neurones
Electrical synapse happens when electrical current flows directly from one cell to another via a gap junction.
True
False
Saltatory conduction is
depolarization process at the nodes of Ranvier
the propagation of action potentials along myelinated axons from one node of Ranvier to the next node
restoration of resting membrane potential
polarization process at the nodes of Ranvier
"Process and interpret the message from sensory neurons and send the message back to other body parts" refer to
sensory neurons
interneurons
receptors
motor neurons
Which of these form the peripheral nervous system?
brain and spinal cord
nerves and ganglia
brain and ganglia
nerves and spinal cord
In a myelinated neuron, depolarisation can happen not only at the nodes of Ranvier
True
False
A junction between an axon and another cell is called a
synapse
presypnaptic cell
postsypnatic cell
neurotransmitter
What happens when an action potential reaches a terminal?
Electrical current flows directly from one cell to another via gap junction
Electrical current flows directly from one cell to another via vesicles
Release of neurotransmitters into the synaptic cleft
Release of potassium and calcium ions into the synaptic cleft
The action potential speed increases when
diameter of axon increases
diameter of axon decreases
axons are myelinated
axons are demyelinated
"Transmit information about internal or external stimuli" refer to
Sensory neurons
interneurons
spinal cord
motor neurons
Neurons are nourished and insulated by
axon hillock
schwann cell
glia
neurotransmitter
