Neurotransmitter

Q.

Write a short note on generation and conduction of nerve impulse

Q. Cocaine interferes with the transport of which of the following neurotransmitter ?

1. Acetylcholine
2. Dopamine
3. Serotonin
4. Prostaglandin

Q.

Synaptic vesicles contain chemicals called

1. Synaptic fluid

2. Neurotransmitters

3. Vesicular fluid

4. All of these

Q. Transmission of nerve impulse is unidirectional due to

1. insulation of nerve fibre by medullary sheath
2. neurotransmitter released only at axon ending
3. neurotransmitter released only at dendrite ends
4. both a and b

Q. Alzheimer’s disease in humans is associated with the deficiency of:

1. Acetylcholine
2. Gamma Amino Butyric Acid (GABA)
3. Dopamine
4. Glutamic acid

Q.

The drug used to increase cardiovascular effects in human beings is:

1. Cocaine

2. Barbiturate

3. Insulin

4. Benzodiazepine

Q.

Explain the process of the transport and release of a neurotransmitter with the help of a labelled diagram showing a complete neuron, axon terminal and synapse.

Q. Chemicals which are released at the synaptic junction are called

1. hormones
2. neurotransmitters
3. enzymes
4. lymph

Q. Which of the following is secreted during allergic reactions?

1. Histamines
2. Pyrogens
3. Allergens
4. Immunoglobulins

Q.

The functional junction between two neurons is

1. neurotransmitter

2. CSF

3. Neuroplasm

4. synapse

Q. During depolarization,

1. Na+ moves out of the neuron
2. K+ moves into the neuron
3. organic ions move out of the neuron
4. Na+ moves into the neuron

Q. Synthetic drugs structurally related to adrenaline are

1. Amphetamines
2. Barbiturates
3. Hallucinogens
4. Analgesics
5. Narcotics

Q. Synaptic vesicles contain chemicals called

Q. When the stimulus reaches the end of one neuron, it is conducted to the adjacent neuron through the secretions of

1. Acetylcholine esterase
2. Acetyl Co - A
3. Acetaldehyde
4. Acetylcholine

Q.

Name the following:

The functional junction between two neurons.

Q.

Provide one word for the following:

Point of contact between two nerve cells.

Q. Match the following:

Column I	Column II
A.Opioids	i. Cardiovascular system
B.Cannabinoids	ii. Gastrointestinal tract
C.Cocaine	iii. Adrenal gland
D.Nicotine	iv. Neuro-transmitter dopamine

1. A $\to$ i, B $\to$ iv, C $\to$ ii, D $\to$ iii
2. A $\to$ i, B $\to$ iv, C $\to$ iii, D $\to$ ii
3. A $\to$ i, B $\to$ iii, C $\to$ ii, D $\to$ iv
4. A $\to$ ii, B $\to$ i, C $\to$ iv, D $\to$ iii

Q. The gap between two neurons is called a

1. Dendrite
2. Synapse
3. Axon
4. Impulse

Q.

Axon arises from the dendrites.

1. True
2. False

Q.

Chemicals which are released at the synaptic junctions are called

(a) hormone (b) neurotransmitters

(c) cerebrospinal fluid (d) lymph

Q. During depolarization,

1. Na+ moves out of the neuron
2. K+ moves into the neuron
3. organic ions move out of the neuron
4. Na+ moves into the neuron

Q. Synaptic vesicle occurs in

1. Post-synaptic neuron
2. Presynaptic neuron
3. Synaptic cleft
4. None of the above

Q. Which excitatory neurotransmitter is involved in the transmission of impulse at the neuromuscular junction?

1. Serotonin
2. Acetylcholine
3. Glycine
4. Epinephrine

Q. Which of the following is not the feature of electrical synapse?

1. Membrane of pre and post synaptic neurons are in very close proximitly
2. They are rare in our system
3. Impulse transmission is slower than chemical synapse
4. Nerve impulse transmission is always excitatory

Q. During synaptic transmission of nerve impulse, neuro transmitter (P) is released from synaptic vesicles by the action of ions (Q). Choose the correct P and Q.

1. P-acetylcholine, Q – Ca²⁺
2. P-acetylcholine, Q – Na⁺
3. P – GABA, Q – Na⁺
4. P – cholinesterase, Q – Ca²⁺

Q. Why is the neurons called the structural and functional unit of the nervous system

Q. The medullary sheath of the nerve fibre is interrupted at intervals by

1. Glia
2. Septa
3. Synapses
4. Nodes of Ranvier

Q. When the stimulus reaches the end of one neuron, it is conducted to the adjacent neuron through the secretions of

1. Acetaldehyde
2. Acetylcholine
3. Acetylcholine esterase
4. Acetyl Co - A

Q.

Fill in the blanks. Choose the appropriate word or words from the brackets and fill up the blanks:

(a) Messages take the form of electrical signals and are known as ____.(nerves/impulses)

Q. The drug that interferes with transport of neurotransmitter dopamine is

1. Marijuana
2. Cocaine
3. Charas
4. Heroin
5. Benzodiazepines