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bio exam 2 questions > yuh > Flashcards

yuh Flashcards

1
Q

Bipolar neurons are ________.

A

sensory neurons for the senses of hearing, equilibrium, vision, and smell

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2
Q

Parasympathetic stimulation ________.

A

decreases blood supply to skeletal muscles and increases blood supply to digestive organs

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3
Q

Sensory areas for hearing are located in the ________.

A

temporal lobe

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4
Q

The ________ controls skeletal muscles

A

promoter area

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5
Q

The axons of the parasympathetic postganglionic neurons secrete ________.

A

acetylcholine

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6
Q

The cerebrospinal fluid is formed in the ________.

A

lateral, the 3rd, and the 4th ventricles

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7
Q

In the process of depolarization of a neuron, the ________ flow of Na+ causes the ECF along the outside of plasma membrane to become ________ charged.

A

inward; negatively

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8
Q

In the process of repolarization of a neuron, the ________ flow of K+ causes the ECF along the outside of plasma membrane to become ________ charged.

A

outward; positively

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9
Q

Which of the following generates and transmits nerve impulses that arouse the cerebrum to wakefulness?

A

Reticular formation

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10
Q

Unipolar neurons are ________.

A

sensory neurons other than the ones for the senses of hearing, equilibrium, vision, and smell

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11
Q

Which of the following controls body temperature?

A

Hypothalamus

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12
Q

______ is the innermost membrane of the meninges

A

pia meter

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13
Q

Which of the following is a general function of the nervous system?

A

Detection of internal and external environmental changes

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14
Q

The ________ controls the ability to speak.

A

motor speech area

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15
Q

________ is caused by an insufficient delivery of the neurotransmitter dopamine to neurons in certain basal nuclei within the cerebrum.

A

Parkinson disease

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16
Q

The ________ of the spinal cord contain the interneurons

A

posterior horns

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17
Q

The posterior root ganglion contains the ________.

A

cell bodies of sensory neurons

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18
Q

Mood disorders, such as depression, are usually a result of malfunction of the ________.

A

limbic system

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19
Q

When a neuron is activated by a threshold stimulation, ________ channels open, which allows these ions to quickly ________.

A

sodium ion; diffuse into the neuron

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20
Q

The autonomic division is involved in controlling ________.

A

cardiac muscle, glands, and adipose tissue

21
Q

If a neuron’s cell body and dendrites are located in the CNS while its axon is located in PNS, this neuron is a(n) ________.

A

motor neuron

22
Q

Sensory areas for vision are located in the ________.

A

occipital lobe

23
Q

Which of the following is NOT a function of the spinal cord?

A

It interprets the sensory nerve action potentials as sensations.

24
Q

Which of the following is involved in sleep and wakefulness?

A

Hypothalamus

25
Q

The ________ releases the neurotransmitters into the synaptic cleft.

A

terminal bouton

26
Q

At a synapse, the receptors for the neurotransmitters are located ________.

A

on the plasma membrane of the postsynaptic neuron

27
Q

________ is the outermost layer of the meninges.

A

dura meter

28
Q

________ is the middle membrane of the meninges.

A

archanoid meter

29
Q

The sciatic nerves arise from ________ plexus.

A

sacral

30
Q

The ________ are bundles of myelinated and unmyelinated axons of interneurons that extend up and down within the spinal cord.

A

nerve tracts

31
Q

Multipolar neurons are ________.

A

either motor neurons or interneurons

32
Q

The cell bodies of the sympathetic postganglionic neurons are located in the ________.

A

autonomic ganglia located far away from the effectors

33
Q

Brainstem refers to the part of the brain consisting of the ________.

A

medulla oblongata, pons, and midbrain

34
Q

The motor division of the nervous system carries action potentials from ________.

A

the CNS to the effectors

35
Q

The ________ is a reflex center that controls and coordinates the interaction of skeletal muscles.

A

cerebellum

36
Q

In a resting neuron, concentrations of ________ are higher in the ECF than that in the cytosol, whereas ________ have the opposite distribution.

A

sodium and chloride ions; potassium ions

37
Q

________ are involved in the production of cerebrospinal fluid.

A

Ependymal cells

38
Q

Which of the following is NOT a general function of the nervous system?

A

Detection of all stimuli

39
Q

The ________ of the spinal cord contain the cell bodies of motor neurons of the autonomic division.

A

lateral horns

40
Q

The cell bodies of the parasympathetic postganglionic neurons are located in the ________.

A

autonomic ganglia located very near or within the effectors

41
Q

The ________ increases the speed of action potential transmission.

A

myelin sheath

42
Q

The phrenic nerves arise from ________ plexus.

A

cervical

43
Q

In a resting neuron, the plasma membrane is ________.

A

more permeable to potassium ions than to sodium ions

44
Q

If a neuron is located entirely in the CNS, this neuron is a(n) ________.

A

interneuron

45
Q

The cell bodies of the sympathetic preganglionic neurons are located in the ________.

A

spinal cord only

46
Q

Nerves from ________ plexus innervate the skin and muscles of pectoral girdles and upper limbs.

A

brachial

47
Q

The anterior roots of the spinal nerves contain the ________.

A

axons of motor neurons

48
Q

The ________ of the spinal cord contain the cell bodies of somatic motor neurons.

A

anterior horns

49
Q

________ is associated with a loss of certain cholinergic neurons in the brain and a reduced ability of neurons to secret acetylcholine.

A

Alzheimer disease

bio exam 2 questions (1 decks)

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