Neural Control and Coordination

Q1. Respiratory centre is situated in:

1. Cerebellum.
2. Medulla oblongata.
3. Hypothalamus.
4. Cerebrum.

Q2. A bipolar neuron has:

1. Two axons and one dendrite.
2. Two dendrites and one axon.
3. Two axons and two dendrites.
4. One axon and one dendrite.

Q3. Mark the vitamin present in Rhodopsin:

1. Vit A.
2. Vit B.
3. Vit C.
4. Vit D.

Q4. In human brain, the centre for smell, is located in:

1. Mid brain.
2. Olfactory lobes.
3. Medulla.
4. Cerebellum.

Q5. During resting state, fluid outside axon contains.

1. Low concentration of K⁺
2. Low concentration of Na⁺
3. Low concentration of Cl^–
4. High concentration of Cl^–

Q6. Characteristic feature of human cornea is that:

1. It is secreted by conjunctiva and glandular tissue.
2. It is lacrimal gland which secretes tears.
3. Blood circulation is absent in cornea.
4. In old age it become hard and white layer deposits on it which causes the cataract.

Q7. Select the correct statement from the ones given below.

1. Cocaine is given to patients after surgery as it stimulates recovery.
2. Barbiturates when given to criminals make them tell the truth.
3. Morphine is often given to persons who have undergone surgery as a pain killer.
4. Chewing tobacco lowers blood pressure and heart rate.

Q8. Injury to vagus nerve in human is not likely to affect.

1. Tongue movements.
2. Gastrointestinal movements.
3. Pancreatic secretion.
4. Cardiac movements.

Q9. The region of the vertebrate eye, where the optic nerve passes out of the retina, is called the,

1. Fovea
2. Iris
3. Blind spot
4. Optic chaisma

Q10. At a neuromuscular junction, synaptic vesicles discharge __.

1. Acetylcholine.
2. Epinephrine.
3. Adrenaline.
4. None of these.

Q11. Which layer is in contact with brain tissues?

1. Piamater.
2. Arachnoid.
3. Duramater.
4. Piamater and Arachnoid.

Q12. What is the name of the node between two myelin sheaths?

1. Nissl’s Granules.
2. Schwan Cell.
3. Nodes of Ranvier.
4. None of these.

Q13. Ivan Pavlov performed experiments on:

1. Simple reflexes.
2. Conditioned reflexes.
3. Cardiac reflexes.
4. Origin of life.

Q14. The organ of corti is a structure present in:

1. External ear.
2. Middle ear.
3. Semi circular canal.
4. Cochlea.

Q15. Which of the following is true about chemical synapse?

1. There is gap between membranes of two axons.
2. There is lesser gap between membranes of two axons.
3. Chemical synapse is primarily responsible for the action of parasympathetic neural system.
4. Chemical synapse is primarily responsible for the action of sympathetic neural system.

Q16. In human cochlea, the scala vestibuli and scala media are separated by:

1. Basilar membrane.
2. Reissner’s membrane.
3. Otolith membrane.
4. Tectorial membrane.

Q17. Which one of the following statements is correct?

1. Neurons regulate endocrine activity, but not vice versa.
2. Endocrine glands regulate neural activity and nervous system regulates endocrine glands.
3. Neither hormones control neural activity nor the neurons control endocrine activity.
4. Endocrine glands regulate neural activity, but not vice versa.

Q18. Which is right combination of names of ear ossicles?

1. Malleus, incus and cochlus.
2. Malleus, incus and stapes.
3. Magnus, incus and stapes.
4. Malleus, incus and cochlea.

Q19. Bowman’s glands are found in:

1. Olfactory epithelium.
2. External auditory canal.
3. Cortical nephrons only.
4. Juxtamedullary nephrons.

Q20. Afferent nerve fibres carry impulses from:

1. Effector organs to CNS.
2. Receptors to CNS.
3. CNS to receptors.
4. CNS to muscles.

Q21. Which one of the following not act as a neurotransmitter?

1. Acetylcholine
2. Epinephrine
3. Norepinephrine
4. Cortisone

Q22. When a neuron is in resting state i.e. not conducting any impulse, the axonal membrane is:

1. Comparatively more permeable to K ions and nearly impermeable to Na ions.
2. Comparatively more permeable to Na ions and nearly impermeable to K ions.
3. Equally permeable to both Na and K ions.
4. Impermeable to both Na and K ions.

Q23. Find the odd one.

1. Schwann cells.
2. Nissl s granules.
3. Nephrons.
4. Synaptic knob.

Q24. Retina is most sensitive at:

1. Optic disc.
2. Periphery.
3. Macula lutea.
4. Fovea centralis.

Q25. In a man, abducens nerve is injured. Which one of the following functions will be affected?

1. Movement of the eye ball.
2. Swallowing.
3. Movement of the tongue.
4. Movement of the neck.

Q26. Which of the following nerves is the largest of all the cranial nerves?

1. Abducens nerve.
2. Oculomotor nerve.
3. Olfactory nerve.
4. Trigeminal nerve.

Q27. Arbor vitae is composed of:

1. Neuroglea cells.
2. White matter.
3. Grey matter.
4. All of these.

Q28. Among which one of the following groups of chemicals, all are neurotransmitters?

1. Noradrenaline, somatostatin, threonine.
2. Somatostatin, serotonin, acetylcholine.
3. Glycine, dopamine, melatonin.
4. Acetylcholine, noradrenaline, dopamine.

Q29. In the chemistry of vision in mammals, the photosensitive substance is called.

1. Sclerotin
2. Retinal
3. Rhodopsin
4. Interneurons.

Q30. Which of the following is not involved in Knee-jerk reflex?

1. Muscle spindle.
2. Motor neuron.
3. Brain.
4. Interneurons.