Theme Test 1 Flashcards
The neural circuit involved in the regulation of fleeing, feeding, fighting and sexual behaviour is the
limbic system
Which part of a neuron is sometimes myelinated
axon
The somatic nervous system
is part of the PNS and participates in sensory and motor interactions with the external environment
Gray matter of the spinal cord is largely composed of
cell bodies and unmyelinated interneurons
In its resting state, a neuron is said to be
polarised
Metabotropic receptors are linked to
signal proteins and G proteins
Ions pass through the neural membrane via specialised pores called
ion channels
With respect to neurotransmitters, the correct sequence is
synthesis, storage, exocytosis, reuptake
A CT scan of the human brain is usually presented as a series of eight or nine
horizontal sections
The main difference between the average event-related potential (ERP) and the ‘raw’ electroencephalography (EEG) signal for a single trial is that
random noise in the ongoing EEG is cancelled out by signal averaging
Positron emission tomography (PET)
uses different types of radioactive isotopes to image neurotransmitter transport and receptor binding in the brain
Disruptive transcranial magnetic stimulation (‘virtual lesion’ TMS) involves
stimulating a cortical region at specific time(s) during performance of a cognitive task and measuring behaviour to determine if and when that cortical region is critically involved
Most cell division in the developing neural tube occurs in the
ventricular zone
Immature cells that have the potential to develop into many, but not all, classes of mature cells (e,g blood, skin, hair, neurons) are called
pluripotent
During migration, most neurons are guided to their ultimate location by special progenitor cells known as
radial glia
How many ventricles are in the brain
4
The large cortical ridges between fissures are called
sulci
The large, two-lobed subcortical structure that sits atop the brain stem is the
thalamus
The autonomic nervous system (ANS) is part of the
peripheral nervous system (PNS)
Drug that increase the activity of a particular neurotransmitter are said to be (blank) of that neurotransmitter
antagonist
Pump mechanisms in the cell membrane of neurons move (blank) ions out of the neuron to maintain the membrane potential
sodium
In humans, EEG electrodes are usually taped to the
scalp
Growing axons follow the routes of axons already established by pioneer growth cones. They follow the first axons by a process known as
fasciculation
The vast majority of experimental effects on development have been found to occur during (blank) periods rather than (blank)
sensitive, critical
