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Physiology > Physio module 3 > Flashcards

Physio module 3 Flashcards

2
Q

they are the actual anatomical structures that perform the functions dictated by the nerve signals

A

Effectors

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3
Q

lower regions of the brain: automatic muscle responses =higher region : _______

A

deliberate complex muscle movements

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4
Q

the junction point from one neuron to the next

A

Synapse

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5
Q

Chemical synapse : _____ = electrical synapse : gap junctions

A

Neurotransmitters

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6
Q

True or false, Chemical synapses transfer information in both direction

A

False, one direction ..Electrical un both direction

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7
Q

specificity of nerve fibers for transmitting only one modality of sensation

A

Labeled line principle

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8
Q

longest measured time for complete adaptation of a mechanoreceptor is

A

About 2 days ( baroreceptor)

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9
Q

True or false. Plasma growth hormone levels are HIGH during sleep

A

True

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10
Q

Ascending pathway for vibration

A

Dorsal column medial lemniscus

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11
Q

whereby increasing signal strength is transmitted by using progressively greater numbers of fibers

A

Spatial summation

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12
Q

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

A

Integrative function of the nervous sys

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13
Q

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

A

Divergence

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14
Q

Activating sys of forebrain

A

Reticular formation

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15
Q

Hypothalamus receives input from ______ to maintain homeostasis
A. ICF
B. ECF

A

ECF

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16
Q

Increase in leptin would
A. Increase appetite
B. decrease appetite

A

B

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17
Q 
Which form/s of sleep is characterized by autonomic excitation
A. Slow wave 
B. rapid eye 
C. Both 
D. Neither
A

B.

18
Q

Master gland of the endocrine system

A

Pituitary gland

19
Q

Master clock of the body

A

Hypothalamus specifically the suprachiasmatic nuclei

20
Q 
When is cortisol at its highest peak? 
A. Early morning
B. noon 
C. Afternoon
D. Evening
A

A. Prior to awakening

21
Q

Which part of the brain secretes ADH

A

Supra optic or para ventricular nuclei of the hypothalamus

22
Q

True or false. Melatonin levels increased with increased light

A

False. It decreases

23
Q 
Fastest EEG wave 
A. Alpha
B. beta
C. Theta 
D. Delta
A

B

24
Q 
People are most alert at 
A. Early morning 
B. afternoon
C. Night
D. Late night
A

B.

lowest alertness -before and after sleep

25
Q

Respond to stimulus after it has been processed by the brain

A

Efferent / motor

26
Q

True or false an epileptic patient will have a normal EEG

A

False. It has a characteristic appearance of spikes or sharp peaks

27
Q

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.

A

False. Stage 3 and 4 disappears

28
Q

First order neuron in ascending pathway

A

Dorsal root ganglion

29
Q

Mismatch between sensation and perception results in

A

Illusion

30
Q

What brain structure connects the rostral component of right and left temporal lobe

A

Anterior commisure

31
Q

Medical term of writhing of the limbs

A

Athenosis?????

32
Q

True or false. Pain will adapt

A

False

33
Q

Lesion on anterior hypothalamus would result to
A. Hyperthermia in hot weather
B. hypothermia in cold weather

A

A

34
Q

True or false. The percentage of REM sleep declines with age

A

True. Newborn 50%Adult 25%

35
Q

EEG wave when awake but eyes open

A

Beta.

Alpha if eyes close

36
Q

What type of sleep is called paradoxical sleep

A

REM

37
Q

This pathway is theprincipal means by which light signals from the outsideworld transmit the day/night rhythm to the brain’s internalclock

A

Retinohypothalamic tract

38
Q

links the hippocampus to the mammillary body of the hypothalamus

A

Fornix

39
Q 
Slowest EEG wave 
A. Alpha 
B. beta
C. Delta
D. Theta
A

C.

40
Q

Almost all the synapses used for signal transmission in the central nervous system of the human being are electrical synapses

A

False. Mostly chemical

Physiology (9 decks)

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