
Les. no. 21 Neural Control and Coordination
Quiz by Sumila Kamble
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1. The chief functional units of the nervous system are
Nerve cells do not possess
Nissl's granules are absent in
Nissl's bodies are mainly composed of
The dendrite carries impulses
Suppose the terminal ends of axon are in contact with dendrites of four adjacent neurons, the nerve impulse of the axon will
Nerve impulse travels in a neuron from
The neuron having only one axon and one dendrite is called neuron.
Multipolar neurons are with
Bipolar neurons are found in
Myelin sheath is produced by
Select the CORRECT statement regarding the Schwann cells.
Which of the following part of a neuron is covered by myelin sheath?
The medullary sheath of the nerve fibre is interrupted at intervals by
The gaps between adjacent myelin sheaths are known as
Which set of ions are required during conduction of the nerve impulse?
When a neuron is in resting state, Le, not conducting any impulse, the axonal membrane is
Resting membrane potential is maintained by
When a nerve fibre is stimulated, the inside of the membrane
During the transmission of nerve impulse through a nervef ibre, the potential on the inner side of the plasma membrane has which type of electric charge?
An action potential in the nerve fibre is produced when positive and negative charges on the outside and the inside of the axon membrane are reversed, because
Receptor sites for neurotransmitters are present on
Read the following statements and select the
correct option. Statement 1: Electrical synapses are rare in our
system.
Statement II: Impulse transmission across an electrical synapse is slower than that across a chemical synapse.
Nervous system of human consists of
Which of the following neural system carries nerve impulse from CNS to skeletal muscles?
The membranes enclosing the brain and spinal cord are known as
The sequence of meninges from outside to inside is
Which of the following is NOT a layer of cranial meninges?
The corpus callosum interconnects
If a person has lost his memory in an accident, the following part of the brain got injured
From the following identify the CORRECT statements.
i. Gray matter present in the central nervous system contains neuronal cell bodies.
ii. Myelinated axons form the white matter
iii. Thalamus is a major coordinating centre for sensory and motor signaling
iv. Association areas are responsible for complex functions like inter-sensory associations, memory and communication.
Injury localized to the hypothalamus would most likely disrupt
Which part of the brain is responsible for thermoregulation?
Hypothalamus does not control
The part of the brain where the centre for hunger and thirst is located is
An area in the brain which is associated with strong emotions is
The canal passing through the midbrain is called
The hind brain consists of
Respiratory control centre in the brain is located in
A serious injury to medulla oblongata may cause death because it
Which of the following regions of the brain is INCORRECTLY paired with its function?
Which of the following structures or regions is INCORRECTLY paired with its functions?
Limbic system is
Destruction of the anterior horn cells of the spinal cord would result in loss of
The function of our visceral organs is controlled
by
How do parasympathetic neural signals affect the working of the heart?
Which of the following is NOT involved in knee-jerk reflex?
Iris is the forward continuation of
The diameter of he pupil is regulated by the muscle fibres of
Twilight vision is the function of