2.2 The Brain (II) Flashcards
What are the parts of the diencephalon?
hypothalamus
thalamus
epithalamus
What forms the floor of the third ventricle?
hypothalamus
What is the function of the hypothalamus?
maintain homeostasis
regulate basic body functions such as hunger, thirst, sleep, body temp, water balance, and blood pressure
What does the hypothalamus control?
pituitary gland
What does the pituitary gland do?
regulates body hormones of the endocrine system
What serves as a link between the nervous and endocrine systems?
hypothalamus
What forms the roof of the third ventricle?
thalamus
What is the last portion of the brain for sensory input before the cerebrum?
thalamus
What is the function of the thalamus?
central relay station for sensory impulses traveling upward from other parts of the body and the brain to the cerebrum
What sensory inputs does the thalamus NOT receive?
smell
What is the epithalamus?
forms the roof of the third ventricles and is mostly composed of the pineal gland
What does the pineal gland secrete?
melatonin
What does melatonin control?
wake-sleep cycle
Where is the cerebellum located?
inferiorly and posteriorly to the brain
What is the cerebellum divided into?
two hemispheres and three lobes
What is the cerebellum composed of?
thin outer cortex of gray matter
internal white matter
What is the function of the cerebellum?
coordinate body movements by relaying information to the cerebral motor cortex
maintaining balance
controlling certain eye movements
maintaining muscle tone
maintaining posture
What is muscle tone?
degree at which muscles remain partially contracted while at rest
What is the purpose of maintaining muscle tone?
to keep bones and joints in place
Where do the anterior and posterior lobes of the cerebellum receive information from?
body trunk
