mcq1

Arrange the following events in the right order

Leydig cells produce testosterone
TDF stimulates undifferentiated gonads to develop into testes
5-alpha-reductase converts testosterone into DHT
MIH causes degeneration of Müllerian duct, testosterone causes Wolffian duct to develop into certain internal male reproductive structures
TDF gene produces TDF
Undifferentiated urogenital region masculinizes

Match the names / functions with the numbers

parietal lobe
occipital lobe
linking left and right cerebral hemisphere
hypothalamus
passing sensory signals on to primary sensory cortices
automatic attentional orienting
planning
cerebellum
pons
medulla

In mammals, testes typically develop

From the Wolffian duct

In response to TDF

In embryos with XY sex chromosomes

If the TDF gene is present

With the help of testosterone

The finding that the hippocampus is particularly rich in NMDA receptors fits with the idea that the hippocampus plays a central role in memory formation. Why?

Because NMDA receptor channels only open if pre- and the post-synaptic cell are both active

Because NMDA receptors are metabolically demanding and thus make the hippocampus particularly vulnerable to seizure activity

Because it has been found that after prolonged spatial learning, the volume of the hippocampus increases

Because NMDA receptor channels enable Hebbian learning, whereby neurons with correlated activity strengthen their synaptic links

Because both the NMDA receptors and the hippocampus are involved in learning

Which of the following statements is/are INCORRECT?

As we are getting older, be become increasingly less able to reach deep (slow-wave) sleep stages

Sleep or sleep-like periods can be observed in all organisms with a brain

Infants spend less time in REM sleep than adolescents

Slow-wave sleep is characterised by highly synchronised electrical brain activity

The superior colliculus controls circadian rhythms

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Department of Psychology

mcq1

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