Showing posts with label #Neural Control and Coordination Class XI. Show all posts
Showing posts with label #Neural Control and Coordination Class XI. Show all posts

Wednesday, March 27, 2024

21. Neural Control and Coordination Class XI

1. Body coordination is maintained by

a)circulatory system

b)nervous system

c)endocrine system

d)both (b) and (c)

Answer

Ans.(d)


2. Which of the following is structural and functional unit of nervous system?

a)Axon

b)Neuron

c)Osteocyte

d)Neuroglia

Answer

Ans.(b)


3. Which of the following part of a neuron is covered by fattysheath?

a)Axon

b)Cyton

c)Dendrite

d)Node of Ranivier

Answer

Ans.(a)


4. Which matter is composed of

a)Nerve cells

b)ependymal

c)NERVE FIBRES

d)None of these

Answer

Ans.(c)


5. Myelin of the nerve fibres of the central nervous system is produced and maintained by

a)Astrocytes

b)Microglia

c)Schwann cells

d)Oligodendrocytes

Answer

Ans.(c)


6. In the resting state of the neural membrane,diffustion due to concentration gradients,if allowed would drive:

a)K + into the cell

b)Na + into the cell

c)Na + out of the cell

d)K +and Na +out of the cell

Answer

Ans.(b)


7. In medullated nerve fibre ,the conduction of impulse is faster due to the presence of

a)Pericytes

b)Nissls granules

c)endoneurium and epineurium

d)myelin sheath and node of Ranivier

Answer

Ans.(d)


8. The electrical potential difference between outside and inside of a nerve axon before excitation is known as

a)Resting potential

b)Action potential

c)Spike potential

d)Reaction potential

e)Activation potential

Answer

Ans.(a)


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

a) Lymp

b) Hormones

c) Neurotransmitters

d) Cerebrospinal fluid

Answer

Ans.(c)


10.The neurotransmitter produced at the synapse and neuromuscular junction is

a)GTP

b)ATP

c)Phosphokinase

d)Acetylcholine

Answer

Ans.(d)


11.Which of the following does not act as a neurotransmitter?

a)Tyrosine

b)Epinephrine

c)Acetylcholine

d)Glutamic acid

Answer

Ans.(a)


12. Adrenaline is equivalent to which neurotransmitter?

a) GABA

b) Serotonin

c) Epinephrine

d ) Norepinehrine

Answer

Ans.(c)


13.Which one isnot a neurotransmitter?

a)Thyroxine

b)GABA

C)Acetylcholine

d)Norepinephrine

Answer

Ans.(a)


14. Membrane covering the brain and spinal cord is called:

a)meninx

b)Grey matter

c)inner meninx

d)Middle meninx

Answer

Ans.(a)


15. Arachnoid matter is:

a)neurilemmal

b)outer meninx

c)inner meninx

d)Middle meninx.

Answer

Ans.(d)


16. Cerebrospinal fluid is present:

a)between piameter and arachnoid mater

b)between the duramater and cranium

c)Between arachnoid and duramater

d)beneath the piamater

Answer

Ans.(a)


17. The supporting and nutritive cells found in the brain are:

a)Microglia

b)Astrocytes

c)ependymal cells

d)oligodendrocytes

Answer

Ans.(c)


18. Corpus callosum is found in the brain of :

a)Frog

b)pigeon

c)elephant

d)crocodile

Answer

Ans.(c)


19) Which part of brain controls intellectual ability?

a)Frontal lobe

b)Parietal lobe

c)Temporal lobe

d)Occipital lobe

Answer

Ans.(a)


20) Which of the following structures is a part of diencephalon?

a)Basal ganglia

b)Olfactory bulb

c)Hypothalamus

d)Cerebral cortex

Answer

Ans.(c)


21. In which part of the brain corpora quadrigemina is located?

a)Diencephalon

b)Mesencephalon

c)Prosencephalon

d)Rhombencephalon

Answer

Ans.(b)


22. Occipital lobe is connected with:

a)Smell

b)Vision

c)Speech

d)Sensory area

Answer

Ans.(b)


23.Vomiting centre is located in the

a)Stomach an d some times in duodenum

b)Gastro-intestinal tract

c)Medula oblongata

d)Hypothalamus.

Answer

Ans.(c)


24.Which part of human brain is concerned with the regulation of body temperature?

a)Medula oblongata

b)Hypothalamus

c)Cererbrum

d)Cerebellum

Answer

Ans.(b)


25. Hypothalmus of the brain is not involved in this function.

a)Sleep –wake cycle

b)Temperature control

c)Osmoregulation and thirst

d)Accuracy pf muscular movement

Answer

Ans.(d)


26.Which part of the brain is involved in loss of control when person drinks alcohol?

a)Thalamus

b)cerebrum

c)Pons varolii

d)Cerebellum

e)Medulla oblongata

Answer

Ans.(d)


27. During course of evolution which part of the brain has shown maximum increase in size?

a)Mid brain

b)Fore brain

c)Hind brain

d)All of these

Answer

Ans.(b)


28. Pons ,cerebellum and medulla together constitute:

a)Hind brain

b)Mid brain

c)Fore brain

d)Telencephalon

e)Cerebral hemispheres

Answer

Ans.(a)


29.Human hind brain comprises three parts,one of which is :

a)spinal cord

b)cerebellum

c)Hypothalamus

d)corpus callosum

Answer

Ans.(b)


30.Integration of the visual,tactile and auditory inputs occurs in the

a)Midbrain

b)limbic system

c)Corpus callosum

d)Medulla oblongata

e)Peripheral nervous system

Answer

Ans.(a)


31.The part of the brain where the centre for hunger and thirst located is

a)cerebrum

b)Cerebellum

c)Hypothalamus

d)Medulla oblongata

Answer

Ans.(c)


32.Comprehension of spoken and written words takes place in the region of :

a) Association area

b) Motor area

c) Wernickes area

d) Brocas area

Answer

Ans.(c)


33.All sensory path ways to the cerebral cortex synapse at the:

a)Pons

b)thalamus

b)cerebellum

d)hypothalamus

Answer

Ans.(a)


34.The part of human hind brain that is responsible for hand- eye coordination is :

a)thalamus

b)Cerebellum

c)pons varolii

d)medulla oblongata

Answer

Ans.(b)


35.The nerve centres which control the body temperature and the urge for eating are contained in :

a)Pons

b)Thalamus

c)Cerebellum

d)Hypothalamus

Answer

Ans.(d)


36.Which function will be lost due to damage of occipital lobe?

a)Hearing

b)Speech

c)Vision

d)Memory

Answer

Ans.(c)


37. Signal nerves are usually

a)mixed

b)Sensory

c)Afferent

d)efferent

Answer

Ans.(a)


38.Which is the largest bone in middle ear?

a)Incus

b)Malleus

c)Stapes

d)Cochlea

Answer

Ans.(b)


39.Reflex action is controlled by

a)Spinal cord

b)autonomic nervous system

c)peripheral nervous system

d)sympathetic nervous system.

Answer

Ans.(a)


40.Which of the following is not involved in knee –jerk reflex?

a)Brain

b) inter neurons

c)Motor neurons

d)Muscle spindle

Answer

Ans.(a)


41.Afferent nerve fibres conduct impulse from

a)CNS to receptor

b)CNS to effector

c)Receptor to CNS

d)Effector to receptor

Answer

Ans.(c)


42.The autonomic nervous system has control over:

a)Reflex action

b)Sense organs

c)internal organs

d)Skeletal muscles

e.Central nervous system.

Answer

Ans.(c)


43.The function of our visceral organs is controlled by

a)Sympathetic and parasympathetic neural system

b)Sympathetic and somatic neural system

c)Central and somatic nervous system

d)None of the above

Answer

Ans.(a)


44.Sensory neurons of retina of eye are :

a)Pacinian and Ruffinis corpuscles

b)Maculae and cristae

c)Rods and cones

d)All of the above

Answer

Ans.(c)


45.The inner most layer of the human eye is

a)choroid

b)cornea

c)sclera

d)retina

e)lens

Answer

Ans.(d)


46.Rods are sensitive to

a)Dim light

b)High intensity light

c)colour perception

d) All of these

Answer

Ans.(a)


47.The purplish red pigment rhodopsin contained in the rod type photoreceptor cells of the human eye is a derivative of

a)Vitamin A

b)Vitamic B1

C)Vitamin C

d)Vitamin D

Answer

Ans.(a)


48.The part of internal ear responsible for hearing is

a)Cochlea

b)Utriculus

c)Sacculus

d)Semicircular canal

Answer

Ans.(a)


49.Which part of the human ear plays no role in hearing as such but is otherwise very much required?

a)Ear ossicles

b)Organ of corti

c)Eustachian tube

d)Vestibular apparatus

Answer

Ans.(d)


50.Organ of corti helps in

a)Maintaining equilibrium

b)Formation of wax

c)Hearing

d)All of these

Answer

Ans.(c)


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