Title 21. NEURAL CONTROL AND COORDINATION.pdf ✅

PAPER 1 (1.) The incorrect statement in the type of muscles present in our organs (1) Upper arm → smooth fibres fusiform in shape (2) Heart are involuntary and unstriated smooth muscles (3) Intestine are striated and involuntary (4) All of these (2.) Organ of corti is a structure located on the : (1) Basilar membrane (2) Tectorial membrane (3) Reissiners membrane (4) All of these (3.) Vestibular apparatus, located : (1) Above the cochlea (2) Below the cochlea (3) Below or above the cochlea (4) In heart (4.) In human body, which one of the following is anatomically correct: (1) Floating ribsv -2 pairs (2) Collar bones -3 pairs (3) Salivary gland -1 pair (4) Cranial nerves -10 pairs (5.) Select the correct statement : (1) Multipolar neurons are present in Embryo (2) Bipolar neurons are present in retina (3) Unipolar neurons are present in Embryo (4) Two of these (6.) Brain stem includes (1) Cerebrum, diencephalon and pons varolii (2) Diencephalon, mid brain and cerebellum (3) Medulla oblongata, pons varolii and mid brain (4) Pons varolii, mid brain and diencephalon (7.) You have two types of brain in petridish. How would you distinguish brain of mammal. By (1) Corpus callosum (2) Optic lobes (3) Cerebellum (4) Cerebrum (8.) In given figure identify A B C , , and D respectively:
(1) A-Gray matter, B-White matter, C-Motor neuron, D-Efferent pathway (2) A-Gray matter, B-White matter, C-Interneuron, D-Afferent pathway (3) A-White matter, B-Gray matter, C-Interneuron, D-Efferent pathway (4) A-White matter, B-Gray matter, C-Motor neuron, D-Afferent pathwya (9.) The conduction of nerve impulse is a (1) Biochemical phenomenon (2) Electrochemical phenomenon (3) Physical phenomenon (4) Bio-physiological phenomenon (10.) The medullary sheath of the nerve fibre is interrupted at intervals by (1) Septa (2) Nodes of Ranvier (3) Synapses (4) Glia (11.) The electrical potential difference between outside and inside of a nerve axon before excitation is called as : (1) Resting potential (2) Action potential (3) Spike potential (4) All of these (12.) The posterior pituitary is under the direct neural regulation of : (1) Hypothalamus (2) Adrenal cortex (3) Adrenal medulla (4) All (13.) The cerebrum is longitudinally divided into two halves that are connected by : (1) Cerebrum (2) Corpus callosum (3) Thalamus (4) Hypothalamus (14.) Medulla oblongata contains centers that control : (1) Respiration (2) Cardiovascular reflexes (3) Gastric secretions (4) All of the above
(15.) Chemicals which are released at the synaptic junction are called : (1) Cerebrospinal fluid (2) Hormones (3) Neurotransmitters (4) Lymph (16.) Nerve impulse is generated when the nerve cell undergoes or passes : (1) Excited stage (2) Depolarization (3) Action potential (4) All of these (17.) Conduction of nerve impulse is : (1) No difference in the rate of conduction in myelinated and nonmyelinated fibres (2) Faster in non-myelinated fibres (3) Faster in myelinated fibres (4) Not possible in myelinated fibres (18.) Which of the following statement is correct for nodes of Ranvier of a nerve: (1) Both neurilemma and mylein sheath are discontinuous (2) Neurilemma is discontinuous (3) Myelin sheath is discontinuous (4) Covered by mylein sheath (19.) The space between the cornea and the lens is called : (1) Aqueous chamber (2) Vitreous chamber (3) Both of these (4) Cerebellum (20.) Which of the following is not correctly matched : (1) Cerebellum - Balance (2) Limbic system - Regulation of sexual behaviour (3) Hypothalamus - Urge for eating (4) Medulla oblongata - Temperature regulation (21.) The specific receptors of the vestibular apparatus responsible for maintenance of balance of the body and posture: (1) Crista (2) Macula (3) Both (a) and (b) (4) Tectorial membrane (22.) Retinal is made up of : (1) Aldehyde of vitamin A (2) Aldehyde of vitamin B (3) Aldehyde of vitamin C (4) Aldehyde of vitamin D (23.) The correct sequence of meninges from inner to outer side is :
(1) Piamater → duramater → arachnoid (2) Arachnoid → duramater → piamater (3) Arachnoid → piamater → duramater (4) Piamater → arachnoid → duramater (24.) Na /K+ + pump in cell is an example of : (1) Passive transport (2) Osmosis (3) Diffusion (4) Active transport (25.) Fovea (a central pit in macula lutea) is the point where visual activity is greatest. In fovea. (1) Only rods are densely packed (2) Only cones are densely packed (3) Both rods and cones are densely packed (4) Cones are more in number (26.) "Organ of Corti" is found in : (1) Scala rotundes (2) Scala media (3) Scala vestibule (4) Scala tympani (27.) The human hind brain comprises three parts, one of which is (1) Cerebellum (2) Hypothalamus (3) Spinal (4) Corpus callosum (28.) Nissl's granules are present in : (1) Cyton (2) Axon (3) Dendron (4) Both A and C (29.) Sodium potassium pump maintains : (1) Resting potential (2) Action potential (3) Both (4) Spike potential (30.) In a nerve, if sodium-potassium pump is blocked, which of the following is most likely to happen : (1) Na+ outside the nerve will increase (2) K + inside the nerve will increase (3) Na+ inside the nerve will increase (4) Na+ and K + will increase outside the nerve (31.) At the time of conduction of nerve impulse, the repolarization occurs with the : (1) Efflux of K + ions (2) Influx of K + ions (3) Infflux of Na+ (4) Both A and B (32.) When a stimulus is applied at a site ( A) on the polarized membrane, the membrane at the site A becomes : (1) Freely permeable to Na+ (2) Freely permeable to K +