Flashcards in 23 - Brain II Deck (79)
What are the major components of the diencephalon?
The epithalamus has what components?
Parapineal body (organ)
What are the components of the hypothalamus?
Optic chiasma (is cephalic boundary)
Infundibular recess and stalk
Posterior pituitary (pars nervosa)
This part of the epithalamus is thought to be involved in emotional and visceral responses to odors.
The habenular nuclei and pineal body projects to the septal nuclei (in thalamus) via...
Stria medullaris thalami
The habenular nuclei projects to the interpeduncular nucleus via...
The pineal body secretes _________, which regulates circadian rhythms. Activity is modulated by light-dark cycle.
Calcification of the _______ _______ accrues with maturity, and lesions of this are associated with precocious puberty.
This makes up 80 percent of the diencephalon.
The thalamus is separated from the hypothalamus via the...
Hypothalamic sulcus (groove)
Landmarks in the thalamus are...
The thalamus has two commissures, which are the ________ and is above the pineal recess, and the ________ which is below the pineal recess.
This is what relays all sensory information except smell to the cerebral cortex. It provides crude awareness.
T/F. The thalamus provides the initial autonomic response of the body to intense pain (physiologic shock).
This type of sensory relay nuclei in the thalamus is auditory and projects to the primary auditory cortex in the temporal lobe.
Medial geniculate body
This type of sensory relay nuclei in the thalamus is visual and projects to the primary visual cortex in the occipital cortex.
Lateral geniculate body
This type of sensory relay nuclei in the thalamus provides general sensations and taste.
Ventral posterior nuclei
This type of motor relay nuclei in the thalamus is voluntary motor.
This type of motor relay nuclei in the thalamus is voluntary motor and arousal.
The ________ ________ nuclei modify neuronal activity in the thalamus. It may be involved in regulating sleep-wakefulness cycle and levels of awareness.
The ________ nuclei in the thalamus is concerned with certain emotions and memory. It receives input from the hippocampus and mamillary bodies (mamillothalamic tract).
The white matter of the thalamus contains what?
External medullary lamina
Internal medullary lamina
T/F. The thalamus controls/integrates ANS.
False. The hypothalamus controls/integrates ANS.
The (ANTERIOR/POSTERIOR) hypothalamus raises arterial blood pressure and increases heart rate.
The (ANTERIOR/POSTERIOR) hypothalamus lowers arterial blood pressure and decreases heart rate (anterior).
ADH and oxytocin is produced by what?
What controls normal body temperature, regulates food intake, and maintains extracellular fluid volume?
What contains the sexual center in the brain?
This nuclei in the hypothalamus is involved in olfactory reflexes and emotional responses to odors. It relay stations for olfactory neurons to inferior colliculi.