Quiz
Anatomy final
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Perguntas do quiz (38)
1In a polarized neuron at rest, which ion is concentrated outside the cell?
- ANa+
- BCa++
- CNone of the above
- DK+
2The period of time in which the neuron cannot generate another action potential is called the
- Aall or none period
- Brefractory period
- Clatent period
- Dsublimial period
3A typical resting membrane potential is
- A+30 mv
- B0 mv
- C-70 mv
- D+100 mv
4 Impulses are conducted from one neuron to another across a
- AGanglion
- Bsynapse
- Cneurofibral node
- Dneuroeffector junction
5Which of the following is true about synapses?
- ANeurotransmitters are released by the dendrites at synapses
- Binformation jumps synapses in the form of electric arcs
- Cneurotransmitters are released in the form of Na and K vesicles
- Dinformation passes in only one direction across synapses
6Which of the following best describes the transmission of an impulse along a neuron?
- Athe movement of a neurotransmitter along a neuronal membrane
- Bsodium and potassium ions moving over the surface of the neuron
- Ca wave of depolarization spreading from the point of the stimulus
- Dpositive charges spreading over the surface of an excitable cell
7Which of the following is released by a presynaptic neuron to generate an impulse in the postsynaptic neuron?
- Aan electric spark
- Bintegrators
- Cneurotransmitters
- Dpackets of sodium and potassium
8The thalamus and hypothalamus are parts of the brain located in the
- ADiencephalon
- BPons
- CMedulla oblongata
- DMidbrain
9the ability of neurons to respond to stimuli and convert them to impulse is called
- Aexcitability
- Bfaciliation
- Csummation
- Ddepolarization
10the type of neuroglial cell found between neurons and blood vessels that join parts by numerous cellular processes are
- Aastrocytes
- Bependymal cells
- Coligodendrocytes
- Dmicroglial cells
11emotions of fear, anger, and pleasure are produced by the
- Apons
- Bcerebellum
- Climbic system
- Dmedulla oblongata
12which of the following is not a structural feature of a neuron?
- Aneurolemma
- Bsynapse
- Cmissl granules
- Daxon
13the job of maintaining homeostasis is a function of the ___ and ___ systems
- Anervous...endocrine
- Bnervous...digestive
- Cendocrine...digestive
- Durinary...digestive
14if a neuron within the CNS has its axon severed,
- Athe neuron will be spurred to reproduce a fully functional one
- Bthe neuron will lose its funstion
- Cthe neuron will most likely die
- Dit will soon regenerate
15It can be said that in a resting neuron, the
- Ainside of the cell is more electropositive than the outside
- Bconcentration of K+ ions is greater outside the cell
- Cmembrane is polarized
- Dall of the above
16A cross section of the cord reveals a core of white matter surrounded by gray matter
- AVerdadeiro
- BFalso
17neurons, like muscle fibers, conduct impulses according to the all or none response
- AVerdadeiro
- BFalso
18A nerve impulse would travel faster down a myelinated C fiber
- AVerdadeiro
- BFalso
19Synaptic conduction of a nerve impulse can be affected by changes is pH
- AVerdadeiro
- BFalso
20during a neuron's resting state, it is full of Na+ ions
- AVerdadeiro
- BFalso
21neurons have plasma membranes which contain a variety of ion charges
- AVerdadeiro
- BFalso
22A neuron will respond maximally to a sub-threshold stimulus
- AVerdadeiro
- BFalso
23the jejenum is the first part of the small intestine
- AVerdadeiro
- BFalso
24One part of the stomach is called the cardiac region
- AVerdadeiro
- BFalso
25Cells that secrete hydrochloric acid are called chief cells
- AVerdadeiro
- BFalso
26peristalsis acts to move food along the alimentary tube
- AVerdadeiro
- BFalso
27the starting place for chemical digestion is the stomach
- AVerdadeiro
- BFalso
28One function of the esophagus is to coat the bolus with mucus
- AVerdadeiro
- BFalso
29The digestive enzyme pepsin secreted by gastric glands begins the digestion of
- Asucrose
- Bfat
- Cprotein
- Dcarbs
30The main part of the stomach is called the
- Afundic region
- Bpyloric region
- Ccardiac region
- Dnone of these
31The salivary enzyme amylase functions to digest
- Acarbs
- Bfats
- Call of these
- Dproteins
32The teeth that are best adapted for biting off large pieces of food is called the
- Aincisors
- Bcuspids
- Cmolars
- Dbicuspids
33Peristalsis occurs in the digestive tract
- Afrom the pharynx to anus
- Bin the stomach and small intestines only
- Cin the small and large intestines only
- Din the stomach, small intestine, and large intestines only
34The material that covers the crown of the teeth is
- Acementum
- Bdentin
- Cenamel
- Dplaque
35What parts of a tooth are destroyed by dental caries?
- AEnamel
- BDentin
- CPulp
- DCementum
36The digestive enzyme pepsin secreted by gastric glands begins in the digestion of
- Acarbohydrates
- Bprotein
- Cfats
- Dnone of these
37Type A hepatitis is transmitted by
- AIngestion of food contaminated by feces
- Btransfusion with blood contaminated by the hepatitis virus
- Cuse of improperly cleaned needles
- Dsexual activity
38The foods that stay in the dtomach for longest are high in
- Afats
- Bproteins
- Ccarbs
- Damino acids
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- Practice for 2nd semester final
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