MCQOPTIONS
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MCQOPTIONS
This section includes 1405 Mcqs, each offering curated multiple-choice questions to sharpen your Logical and Verbal Reasoning knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
_________________ is involved in sleep, moods and emotional states, includingdepression. |
| A. | Acetylcholine |
| B. | Norepinephrine |
| C. | Dopamine |
| D. | Serotonin |
| Answer» E. | |
| 452. |
________________ is involved in a number of functions, including movement,attention and learning and abnormal levels are involved in some mental disorders. |
| A. | Acetylcholine |
| B. | Norepinephrine |
| C. | Dopamine |
| D. | Serotonin |
| Answer» D. Serotonin | |
| 453. |
_______________ stimulates muscle contractions and is involved in memoryfunctions. |
| A. | Acetylcholine |
| B. | Norepinephrine |
| C. | Dopamine |
| D. | Serotonin |
| Answer» B. Norepinephrine | |
| 454. |
Our ability to perceive, feel, think, move, act and react depends on the delicatebalance of ___________________ in the nervous system. |
| A. | Neurotransmitter |
| B. | Nervous cell |
| C. | Neurons |
| D. | Brain |
| Answer» B. Nervous cell | |
| 455. |
________________ is the process by which neurotransmitter molecules detach from a postsynaptic neuron and are reabsorbed by the presynaptic neuron sothey can be recycled and used again. |
| A. | Inhibitory |
| B. | Excitatory |
| C. | Action potential |
| D. | Reuptake |
| Answer» E. | |
| 456. |
The synaptic vesicles contain chemicals called _______________. |
| A. | Synaptic gap |
| B. | Neurotransmitter |
| C. | Interneurons |
| D. | Myelin sheath |
| Answer» C. Interneurons | |
| 457. |
Within the neuron, information is communicated in the form of brief electricalmessages called _______________. |
| A. | Myelin sheath |
| B. | Synapse |
| C. | Action potential |
| D. | Neurotransmitter |
| Answer» D. Neurotransmitter | |
| 458. |
The _______________ is the minimum level of stimulation required to activate aparticular neuron. |
| A. | Stimulus threshold |
| B. | Action potential |
| C. | Synaptic transmission |
| D. | Neurotransmission |
| Answer» B. Action potential | |
| 459. |
The _________________ is a white, fatty covering made up of glial cells thatincreases the rate at which neural messages are sent. |
| A. | Glial cell |
| B. | Endocrine |
| C. | Axon terminal |
| D. | Myelin sheath |
| Answer» E. | |
| 460. |
The three basic components of the neurons are ____________, ___________ and____________. |
| A. | Cell body, Glial cells and Axon |
| B. | Dendrites, Axon and Glial cells |
| C. | Axon, Cell body and Synapse |
| D. | Cell body, Axon and Dendrites |
| Answer» E. | |
| 461. |
Which of the following does not belong with the rest? |
| A. | Rod cells |
| B. | Amacrine cells |
| C. | Bipolar cells |
| D. | Ganglion cells |
| Answer» B. Amacrine cells | |
| 462. |
______________ help neurons by providing nutrition, removing waste products,and enhancing the speed of communication between neurons. |
| A. | Axons |
| B. | Dendrites |
| C. | Glial cells |
| D. | Cell body |
| Answer» D. Cell body | |
| 463. |
____________ are the basic units of communication in the nervous system. |
| A. | Cells |
| B. | Neurons |
| C. | Axons |
| D. | Dendrites |
| Answer» C. Axons | |
| 464. |
The ability of the eyes to keep an image focused on the retinadespite changes in the distance to the object viewed is called |
| A. | Refraction |
| B. | Hyperopia |
| C. | Adaptation |
| D. | Accommodation |
| Answer» E. | |
| 465. |
The optic nerve and blood vessels exits the eye, and arteries enter it, at the |
| A. | optic chiasma |
| B. | Macula |
| C. | fovea centralis |
| D. | optic disc |
| Answer» E. | |
| 466. |
The sensory hair cells of the cochlea organ of Corti are anchored on the |
| A. | Basilar membrane |
| B. | Vestibular membrane |
| C. | Tectorial membrane |
| D. | Tympanic membrane |
| Answer» B. Vestibular membrane | |
| 467. |
Sound waves travel from the air to the tympanic membrane by way of the ; |
| A. | Pinna |
| B. | Auditory tube |
| C. | external auditory meatus |
| D. | Cochlear duct |
| Answer» D. Cochlear duct | |
| 468. |
Hair cells are involved in all of the following receptors except |
| A. | Semicircular canals |
| B. | The cochlea |
| C. | Taste buds |
| D. | The urethra |
| Answer» D. The urethra | |
| 469. |
Olfaction (smell) differs from other sensory modalities because it |
| A. | Does not transmit to the cerebral cortex but only to lower brain centers. |
| B. | Does not transmit to the cerebral cortex via the thalamus |
| C. | Can function as either an interoceptor or exteroceptor |
| D. | Uses lateral inhibition |
| Answer» C. Can function as either an interoceptor or exteroceptor | |
| 470. |
The bone attached to the medial side of the tympanic membrane, is the |
| A. | Stapes |
| B. | incubus |
| C. | Incus |
| D. | Malleus |
| Answer» E. | |
| 471. |
Of the four basic taste modalities, the one most limited to the tip of the tongueis |
| A. | Bitter |
| B. | Sour |
| C. | Salty |
| D. | Sweet |
| Answer» E. | |
| 472. |
Deep pressure on the skin is sensed by |
| A. | Free nerve endings |
| B. | Meissner\s corpuscles |
| C. | Pacinian corpuscles |
| D. | Merkel\s discs |
| Answer» D. Merkel\s discs | |
| 473. |
Different groups of cone cells are specialized for absorption in all thefollowing regions of the visible spectrum except |
| A. | Green |
| B. | Red |
| C. | Blue |
| D. | Yellow |
| Answer» E. | |
| 474. |
The optic nerve is composed of one axon fiber extending from each ___ cell inthe retina. |
| A. | Ganglion |
| B. | Bipolar |
| C. | Cone |
| D. | Rode |
| Answer» B. Bipolar | |
| 475. |
Sensory hair cells are an example of; |
| A. | Neurotendinous receptors |
| B. | Proprioceptors |
| C. | Motor neuron |
| D. | Nerve endings |
| Answer» C. Motor neuron | |
| 476. |
Proprioceptors; -------------------------, kinesthetic sense; --------- |
| A. | Monitor position of the body parts; monitor our own movements |
| B. | Monitor perception; monitor sensations |
| C. | Monitor our own movements; monitor position of the body parts |
| D. | Monitor sensations; monitor perception |
| Answer» D. Monitor sensations; monitor perception | |
| 477. |
Which of the following is associated with the hypothalamus? |
| A. | Refined body movements |
| B. | Lateral geniculate nucleus |
| C. | Spatial perception |
| D. | Homeostatic regulation |
| Answer» E. | |
| 478. |
The nerve endings which helps in the perception of deep continuous pressureand to stretch; |
| A. | Bulbs of Krause |
| B. | Organs of Ruffini |
| C. | Free nerve endings |
| D. | Pacinian |
| Answer» C. Free nerve endings | |
| 479. |
If we stimulate the periaqueductal gray area or in the raphe magnus nucleusinthe brain, what changes will happen in pain sensitivity? |
| A. | Pain increases |
| B. | Pain become chronic |
| C. | Pain stops immediately |
| D. | Pain decreases |
| Answer» E. | |
| 480. |
Aching pain, throbbing pain, nauseous pain, and chronic pain are examples of: |
| A. | Slow pain |
| B. | Fast pain |
| C. | Acute pain |
| D. | Chronic pain |
| Answer» B. Fast pain | |
| 481. |
Free nerve endings respond to which sensation? |
| A. | Taste |
| B. | Audition |
| C. | Pain |
| D. | Vision |
| Answer» D. Vision | |
| 482. |
Certain smells can induce emotions and related memory due to theinvolvement of-------------- |
| A. | Basal ganglia |
| B. | Medulla |
| C. | Limbic system |
| D. | Thalamus |
| Answer» D. Thalamus | |
| 483. |
Type of taste that will be perceived is primarily determined by; |
| A. | Type of receptor protein in each taste villus |
| B. | Type of receptor amino acids in each taste villus |
| C. | Type of amino acids in each taste villus |
| D. | Type of ion channels in each taste villus |
| Answer» B. Type of receptor amino acids in each taste villus | |
| 484. |
When we apply some taste substance on tounge it leads ------------in the tastehairs; |
| A. | Polarization |
| B. | Depolarization |
| C. | Repolarization |
| D. | Resting potential |
| Answer» C. Repolarization | |
| 485. |
Among the following regions where does maximum number of taste budslocate? |
| A. | Fungiform papillae |
| B. | Foliate papillae |
| C. | Circumvallate papillae |
| D. | Simple papillae |
| Answer» D. Simple papillae | |
| 486. |
-------------provide the receptor surface for taste. |
| A. | Microvilli |
| B. | Free nerve ending |
| C. | Striated cells |
| D. | Glia cells |
| Answer» B. Free nerve ending | |
| 487. |
-----------muscles react slowly to stimulation, and produces mostly longerlasting changes |
| A. | Striated |
| B. | Cardiac |
| C. | Smooth |
| D. | Glandular |
| Answer» D. Glandular | |
| 488. |
Phenylthiocarbamide usually used to test; |
| A. | Color blindness |
| B. | Taste blindness |
| C. | Auditory response |
| D. | Acute vision |
| Answer» C. Auditory response | |
| 489. |
Interneuron has a significant role in polysynaptic reflexes because; |
| A. | It stimulate muscles |
| B. | It connects to interior part of motor neurons |
| C. | It connect with several motor neurons |
| D. | It goes in sequential order |
| Answer» D. It goes in sequential order | |
| 490. |
Withdrawal reflex is an example of ------------reflex; |
| A. | Flexion reflex |
| B. | Polysynaptic reflexes |
| C. | Monosynaptic stretch reflex |
| D. | Simple reflex |
| Answer» C. Monosynaptic stretch reflex | |
| 491. |
The neurochemical which has a major role in motor control is; |
| A. | Dopamine |
| B. | Adrenalin |
| C. | Serotonine |
| D. | Acetylcholine |
| Answer» E. | |
| 492. |
A motor unit is a combination of -------------and ---------- |
| A. | Motor neuron and the subset of fibers |
| B. | Motor neuron and somatosensory neuron |
| C. | Motor neuron and motor cortex |
| D. | Motor neuron and pre motor area |
| Answer» B. Motor neuron and somatosensory neuron | |
| 493. |
Muscle weakness, lack of coordination, slurring of speech and ataxia aresymptoms of damage to which part of the brain? |
| A. | Primary motor area |
| B. | Limbic area |
| C. | Cerebellum |
| D. | Basal ganglia |
| Answer» D. Basal ganglia | |
| 494. |
Which motor pathways has been involved in non-voluntary movement? |
| A. | The extrapyramidal system |
| B. | The pyramidal system |
| C. | Corticobulbar tract |
| D. | The corticospinal tract |
| Answer» B. The pyramidal system | |
| 495. |
Lesions in the primary motor cortex produce ----------and lesions in the otherareas involved in movement produce a variety------ |
| A. | Apraxia; paralysis |
| B. | Paralysis; Apraxia |
| C. | Ataxia : weakness |
| D. | Weakness; paralysis |
| Answer» C. Ataxia : weakness | |
| 496. |
Which is not a part of the basal ganglia? |
| A. | Caudate nucleus |
| B. | Putamen |
| C. | Basal nucleus |
| D. | Globus pallidus |
| Answer» D. Globus pallidus | |
| 497. |
Which among the following is not a hormone secreted by thyroid gland? |
| A. | Thyroxine |
| B. | Thyroidim |
| C. | Triiodothyronine |
| D. | Calcitonin |
| Answer» C. Triiodothyronine | |
| 498. |
Diabetic conditions are due to imbalance in the secretion of ------- and -------hormones from-----gland. |
| A. | Insulin and glucagon; pancreas |
| B. | Insulin and cortisol; pancreas |
| C. | Glucagon and steroids; pituitary |
| D. | Insulin and glucagon; liver |
| Answer» B. Insulin and cortisol; pancreas | |
| 499. |
Sex steroids are involved in: |
| A. | Reproduction |
| B. | Delivery |
| C. | Secondary sexual charecteristics |
| D. | Sexual arousal |
| Answer» D. Sexual arousal | |
| 500. |
glucocorticoids, the mineralocorticoids and the sex steroids are released bywhich gland? |
| A. | Adrenal medulla |
| B. | Adrenal cortex |
| C. | Pancreas |
| D. | Gonads |
| Answer» C. Pancreas | |