Physio module 3 Flashcards
they are the actual anatomical structures that perform the functions dictated by the nerve signals
Effectors
lower regions of the brain: automatic muscle responses =higher region : _______
deliberate complex muscle movements
the junction point from one neuron to the next
Synapse
Chemical synapse : _____ = electrical synapse : gap junctions
Neurotransmitters
True or false, Chemical synapses transfer information in both direction
False, one direction ..Electrical un both direction
specificity of nerve fibers for transmitting only one modality of sensation
Labeled line principle
longest measured time for complete adaptation of a mechanoreceptor is
About 2 days ( baroreceptor)
True or false. Plasma growth hormone levels are HIGH during sleep
True
Ascending pathway for vibration
Dorsal column medial lemniscus
whereby increasing signal strength is transmitted by using progressively greater numbers of fibers
Spatial summation
when important sensory information excites the mind,it is immediately channeled into proper integrative and motor regions of the brain to cause desired responses. This is what function of the nervous sys
Integrative function of the nervous sys
Often it is important for weak signals entering a neuronal pool to excite far greater numbers of nerve fibers leaving the pool. This is called
Divergence
Activating sys of forebrain
Reticular formation
Hypothalamus receives input from ______ to maintain homeostasis
A. ICF
B. ECF
ECF
Increase in leptin would
A. Increase appetite
B. decrease appetite
B
Which form/s of sleep is characterized by autonomic excitation A. Slow wave B. rapid eye C. Both D. Neither
B.
Master gland of the endocrine system
Pituitary gland
Master clock of the body
Hypothalamus specifically the suprachiasmatic nuclei
When is cortisol at its highest peak? A. Early morning B. noon C. Afternoon D. Evening
A. Prior to awakening
Which part of the brain secretes ADH
Supra optic or para ventricular nuclei of the hypothalamus
True or false. Melatonin levels increased with increased light
False. It decreases
Fastest EEG wave A. Alpha B. beta C. Theta D. Delta
B
People are most alert at A. Early morning B. afternoon C. Night D. Late night
B.
lowest alertness -before and after sleep
Respond to stimulus after it has been processed by the brain
Efferent / motor
True or false an epileptic patient will have a normal EEG
False. It has a characteristic appearance of spikes or sharp peaks
True or false. Slow wave sleep is characterized by 4 stages. These four stages occur from the first hour to the last hour of sleep.
False. Stage 3 and 4 disappears
First order neuron in ascending pathway
Dorsal root ganglion
Mismatch between sensation and perception results in
Illusion
What brain structure connects the rostral component of right and left temporal lobe
Anterior commisure
Medical term of writhing of the limbs
Athenosis?????
True or false. Pain will adapt
False
Lesion on anterior hypothalamus would result to
A. Hyperthermia in hot weather
B. hypothermia in cold weather
A
True or false. The percentage of REM sleep declines with age
True. Newborn 50%Adult 25%
EEG wave when awake but eyes open
Beta.
Alpha if eyes close
What type of sleep is called paradoxical sleep
REM
This pathway is theprincipal means by which light signals from the outsideworld transmit the day/night rhythm to the brain’s internalclock
Retinohypothalamic tract
links the hippocampus to the mammillary body of the hypothalamus
Fornix
Slowest EEG wave A. Alpha B. beta C. Delta D. Theta
C.
Almost all the synapses used for signal transmission in the central nervous system of the human being are electrical synapses
False. Mostly chemical
