Nervous System One Mark Online Test

Nervous System One Mark Online Test (10th Standard Science)

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Bipolar neurons are found in

A.retina of eye B.cerebral cortex C.embryo D.respiratory epithelium

Site for processing of vision, hearing, memory, speech, intelligence and thought is

A.kidney B.ear C.brain D.lungs

In reflex action, the reflex arc is formed by

A.brain, spinal cord, muscle B.receptor, muscle, spinal cord C.muscle, receptor, brain D.receptor, spinal cord, muscle

Dendrites transmit impulse ______ cell body and axon transmit impulse ______ cell body.

A.away from, away from B.towards, away from C.towards, towards D.away from, towards

The outer most of the three cranial meninges is

A.arachnoid membrane B.piamater C.duramater D.myelin sheath

There are ______ pairs of cranial nerves and ______ pairs of spinal nerves.

A.12, 31 B.31, 12 C.12, 13 D.12, 21

The neurons which carry impulses from the central nervous system to the muscle fibre.

A.afferent neurons B.association neuron C.efferent neuron D.unipolar neuron

Which nervous band connects the two cerebral hemispheres of brain?

A.thalamus B.hypothalamus C.corpus callosum D.pons

Node of Ranvier is found in

A.muscles B.axons C.dendrites D.cyton

Q10

Vomiting centre is located in

A.medulla oblongata B.stomach C.cerebrum D.hypothalamus

Q11

Nerve cells do not possess

A.neurilemma B.sarcolemma C.axon D.dendrites

Q12

A person who met with an accident lost control of body temperature, water balance, and hunger. Which of the following part of brain is supposed to be damaged?

A.Medulla oblongata B.cerebrum C.pons D.hypothalamus

Q13

Which of the following components of the nervous system consists of non-exciting, supporting cells that do not initiate or conduct nerve impulses?

A.Neurons B.Neuroglia C.Nerve fibres D.Ganglia

Q14

Unipolar neurons, in which only a single nerve process arises from the cyton, are typically found in which of the following?

A.Retina of the eye B.Early human embryos C.Cerebral cortex D.Olfactory epithelium

Q15

The axon of a neuron is covered by a protective myelin sheath, which is further enveloped by an outer layer of which type of cells?

A.Glial cells B.Schwann cells C.Purkinje cells D.Epithelial cells

Q16

Which chemical substance is released from the synaptic knob of an axon terminal to transmit nerve impulses across a synapse?

A.Acetylcholine B.Thyroxine C.Insulin D.Pepsin

Q17

Which of the following correctly describes the arachnoid membrane surrounding the human brain?

A.Outermost thick fibrous membrane protecting the brain B.Middle thin vascular membrane providing a web-like cushion C.Innermost delicate membrane richly supplied with blood D.Protective bony cover formed by the bones of the cranium

Q18

The outer grey matter of the cerebral cortex exhibits folds forming elevations and depressions. What are these structural features called?

A.Nodes and internodes B.Horns and roots C.Gyri and sulci D.Ventricles and canals

Q19

Which region of the forebrain, situated in the cerebral medulla, serves as the major conducting and relay centre for sensory and motor signaling?

A.Hypothalamus B.Thalamus C.Pons D.Cerebellum

Q20

The dorsal portion of the midbrain contains four rounded swellings called corpora quadrigemina. What primary function do they perform?

A.Control of body temperature and water balance B.Regulation of sleep-wake cycle and digestion C.Control of visual and auditory reflexes D.Maintenance of posture and muscle coordination

Q21

The cerebellum is the second largest part of the brain. It consists of two large lateral hemispheres connected by a central structure called what?

A.Corpus callosum B.Vermis C.Filum terminale D.Pons varolii

Q22

In the human body, the spinal cord extends downwards from the medulla oblongata and tapers into a thin thread-like structure called what?

A.Filum terminale B.Cauda equina C.Central canal D.Posterior horn

Q23

Which of the following is NOT a functional role played by Cerebrospinal Fluid (CSF) in the central nervous system?

A.Acting as a shock-absorbing fluid against sudden jerks B.Supplying essential nutrients to brain tissue C.Initiating voluntary muscle contractions directly D.Maintaining constant pressure within the cranium

Q24

Which clinical instrument records electrical impulses generated by the brain to help diagnose seizures, epilepsy, and brain tumors?

A.Electrocardiogram (ECG) B.Electroencephalogram (EEG) C.Endoscope D.Stethoscope

Q25

In a spinal nerve, what is the correct path and direction of nerve impulses passing through the dorsal root?

A.Motor impulses directed away from the spinal cord B.Sensory impulses directed towards the spinal cord C.Autonomic signals traveling to the heart D.Motor commands passing directly to effector muscles

Q26

Which physiological response is triggered by the activation of the sympathetic division of the autonomic nervous system?

A.Slowing down of the heartbeat B.Constriction of the pupils C.Dilation of the bronchi and acceleration of heartbeat D.Stimulation of digestive secretions and peristalsis

Q27

Human brain tissue consists of approximately 60 percent fat. Which vital molecules must be obtained through diet to maintain brain integrity?

A.Essential Fatty Acids (EFAs) B.Essential Amino Acids C.Saturated Triglycerides D.Complex Carbohydrates

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About this Nervous System test

This free online practice test covers Nervous System from the 10th Standard Science (Samacheer Kalvi) syllabus. Choose the number of questions and an optional time limit, then answer and submit — everything is checked in your browser, with the correct answers and a worked explanation shown at the end. For the full solutions to every question in this set, see the solved MCQs page.

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