1 - A nerve fibre can transmit impulses at the rate of:
130 metre per second
2 - A nerve which conducts impulses from a tissue to nerve is called:
Afferent
3 - A very common example of reflex action is:
Salivation of mouth at the sight of a favourite food
4 - A voluntary response is one that:
Is under cerebral control and aimed to achieve difinite object
5 - Acetylcholine is responsible for transmission of nerve impulses through:
Synapses
6 - Acetylcholine is:
Chemical transmittor across synapses
7 - Afferent nerve fibres conduct impulses from:
Receptors to CNS
8 - An impulse travels along the nerve fibre as a :
Self propagative wave of some electrochemical changes
9 - An impulse will travel through a nerve fibre only if the membrane becomes more permeable to ions of:
Sodium
10 - At the point of stimulation the depolarization is of axolemma brought about by:
Increased permeability for sodium ions resulting in influx of Na+ from ECF into cytoplasm
11 - Change in heart rate is an example of:
Autonomic reaction
12 - Chemical transmission of nerve impulses from one neuron to the other or from neuron to muscle is done by:
Acetylcholine
13 - Cholinergic fibres are those which liberate at their free ends:
Acetylcholine
14 - Concentration of K+ in cytoplasm is about:
30 times more than in ECF
15 - Concentration of Na+ and Cl- into ECF is:
10-14 times more than in Cytoplasm
16 - Conduction of nerve impulse depends upon:
All of these
17 - Conduction of nerve impulse through a nerve fibre is purely:
An electrochemical phenomenon
18 - Demonstration of conditioned reflex was first made by:
Pavlov
19 - Destruction of acetylcholine by acetylcho-linesterase is required because of:
Its presence will make further transmission impossible
20 - During conduction of an impulse, electric potential on inside of axolemma changes from:
Positive to negative and remain positive
21 - Each cell in resting stage is in polarized state with a membrane potential of:
?70 mV
22 - ECF contains which of these in large amounts:
Both of these substances listed in (a) & (b)
23 - Entry of some particle in our trachea will cause coughing which is example of:
Autonomic reaction
24 - Functional junction between dendritic region of one reuron or nerve axon ending of other neuron is termed:
Synapse
25 - How can we disturb the conduction of impulse through a nerve fibre:
By all of these processes
26 - If heart is stimulated through vagus nerve, the heart rate will:
None of these
27 - Impulses from CNS to effectors are always carried by:
Axons
28 - In animals with closed circulation the ECF has which of these compartments:
Both (a) & (b)
29 - In resting stage the axolemma is poorly permeable to Na+ but quite permeable to K+ and Cl- by:
50-100 times
30 - In saltatory transmission the impulse propagates:
From one node of Ranvier to other and so on so forth
31 - In the resting stage the axolemma is:
Both (a) & (b)
32 - In vertebrates the reflex action is:
Polysynaptic
33 - Longest cell in our body may be:
Nerve cell
34 - Maintenance of osmotic equilibrium between ECF and cytoplasm with the help of sodium - pump leaves every cell with a net difference of which of these between its cytoplasm and ECF
42 mEq
35 - Maximum length of a nerve fibre can be:
10 metre
36 - Membranes at synaptic terminals of motor fibres innervating skeletal muscles are highly folded but these folds are:
Absent in both cardiac and smooth muscles
37 - Motor fibres inervating skeletal muscles are:
Cholinergic
38 - Nerve impulse is in fact, a process which is associated with which of these phenomenon:
Electrochemical
39 - Nervous inervation of heart is primarily meant for:
Starting the heart beat
40 - Neurohormones inhibiting post-synaptic transmission are:
Both (a) & (b)
41 - Neutralization of negative charges over complex organic molecules by K+ ions is a necessary process:
To protect the coagulation of cytoplasm which could occur due to electric potential established within the cytoplasm
42 - On cutting off the parasympathetic supply to heart completely, the heart will:
Beat but without nervous control
43 - Once synaptic junction has allowed transmission of a nerve impulse, it is made ready to transmit the next impulse by the action of:
Acetylcholine
44 - Reflex action in a vertebrate is an essential display exhibited by:
Motor nerves
45 - Reflex action is controlled by:
Central nervous system
46 - Response is:
Nervous reaction to stimuli
47 - Responses in our internal organs without any knowledge to animal are called:
Autonomic reaction
48 - Saltatory transmission of nerve impulse occurs in the:
Myelinated neurons
49 - Sensory ganslion connected with reflex action is located in:
Dorsal root of spinal cord
50 - Sodium pump means:
Expelling of Na+ into ECF and intake of K+ from cytoplasm against concentration gradient
51 - Sodium-potassium-pump operates with the help of which of these enzymes:
Na+ - K+ ATPase
52 - Sodium-pump functions mainly to:
Maintain osmotic equilibrium between ECF and cytoplasm
53 - Some particle in nasal chamber would lead to:
Coughing
54 - Stimulation of heart through sympathetic nerve is a result of:
Release of adrenaline
55 - Sympathetic fibres of autonomic nervous system:
Inhibit the function of a visceral organ by secreting epinephrine
56 - Sympathetic postganglionic fibres except those innervating sweat glands and uterus are:
Adrenergic
57 - Synapse is a gap between adjacent:
Nerve cells
58 - Synapses between motor fibres and end plates are called:
Neuromuscular synapses
59 - Term synapse was applied by:
Sir Charles Sherrington
60 - The action potential on inner side of axolemma is:
45 mV
61 - The distal ends of which of these neurons lie adjacent to blood stream:
Neurosecretory neurons
62 - The electric potential across membrane of each resting cell is:
Resting potential
63 - The impulses from sense organs are always carried from sense organs to CNS by means of:
Dendrites
64 - The inhibitory effect of vagus nerve on the heart is due to the secretion of:
Acetylcholine
65 - The main chemical secreted by sympathetic nervous system to prepare the organism for an emergency reaction is:
Epinephrine
66 - The negative charges over complex organic molecules are neutralized by:
Potassium ions
67 - To avoid the danger of osmotic equilibrium due to passive transport of Na+ and Cl- from into cytoplasm from ECF and that of K+ from cytoplasm into ECF, all the cells:
Constantly expel Na+ into ECF and take K+ from cytoplasm against concentration gradient
68 - Transmission across the synapses is done with the help of:
Both (a) & (b)
69 - Transmission in myelinated fibres occurs:
At about 50 times faster rate than non-myelinated ones
70 - Transmission through synapses is:
Very short lived and occurs only for 0.5 milliseconds
71 - Under the condition of disturbed electrical equivalence between axoplasm and ECF the conduction of nerve impulse will be:
Abnormal
72 - Under the condition of disturbed permeability of axolemma the nerve impulse will:
Conduct abnormally
73 - Under the condition of hypoxia in our body our heart rate is increased due to:
Autonomic reaction
74 - Under the condition of increased CO2 concentration in blood our rate of respiration is increased which is an example of:
Autonomic reaction
75 - When a foreign particle falls on the surface of our eye than it shows a reflex response during which:
Both (a) & (b)
76 - When an electric shock is given to a pithed frog it:
Shows contraction of leg muscles
77 - When stimulation of heart is done through sympathetic nerve, then heart rate will:
Increase
78 - When sympathetic nerve supply to heart is completely cut off then heart rate will:
Show no change
79 - Which of these are not neurohormones:
Thyroxine, gastrin, secretin, enterokrinin, cholecystokinin
80 - Which of these are voluntary responses in man and other animals:
All of these
81 - Which of these have excitability:
Both (a) & (b)
82 - Which of these illustrates a reflex are:
Receptor ? spinal cord ? muscle
83 - Which of these is a correct statement:
All of these statements
84 - Which of these is not a neurohormone:
Glycine
85 - Which of these is not a reflex action:
None of these
86 - Which of these is not a reflex reaction :
Sweating
87 - Which of these is not a voluntary response:
Blinking of eyes when something falls in it
88 - Which of these is not example of conditioned reflex:
Cycling
89 - Which of these is not the example of autonomic reactions in our body:
Search for food
90 - Which of these is not the example of reflex actions:
Catching a prey
91 - Which of these neurons secrete neurohormones:
Neurosecretory
92 - Which of these processes are only found in the animals:
Nervous control
93 - Who established the physiological importance of synapses:
Mclenan
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