Quiz on the Diencephalon and Related Structures

Which structure is known as the body's biological clock?

• Suprachiasmatic nucleus

• Pineal gland

• Ventral posterolateral nuclei

• Medial geniculate nuclei

What is the function of the ventral posterolateral nuclei?

• Relay station for sensory info ascending to primary sensory areas

• Secretes the hormone melatonin

• Receives auditory input and links to auditory cortex

• Receives visual input and links to visual cortex

Which structure lies between the optic chiasm and the mammillary bodies?

• Cerebral cortex

• Epithalamus

• Hypothalamus

• Thalamus

What is the role of the pineal gland?

• Receives auditory input

• Secretes the hormone melatonin

• Control of emotional responses

• Relay station for sensory info

Which fissure separates the cerebral hemispheres?

• Lateral sulcus

• Central sulcus

• Longitudinal fissure

• Transverse fissure

What is the function of the medial geniculate nuclei?

• Receives visual input and links to visual cortex

• Relay station for sensory info

• Receives auditory input and links to auditory cortex

• Secretes the hormone melatonin

What is the primary function of the thalamus?

• Regulation of circadian rhythms

• Relay station for sensory and motor signals

• Secretion of hormones

• Control of voluntary movements

Which part of the brain is responsible for processing visual information?

• Frontal lobe

• Parietal lobe

• Temporal lobe

• Occipital lobe

an

organism’s innate timing devices.

Most human cells and organs

have a clock. Biological clocks

produce circadian rhythms and

regulate their timing.

• biological clocks

• jet lag

• proteins

• sensory receptor

Naturally occurring physical, behavioral, and mental changes in the body that typically follow the 24-hour cycle of the sun is called:

• circadian rhythm

• sleep deficit

• REM sleep

• jet lag