Month: March 2022

ANSWERS: (a)   Arteries are contracting during systole (b)  Blood is pumped with a pressure in the arteries by the heart during systole but not during diastole. (c)   Arteries resist during systole only. (d)  Volume of blood is higher in systole …

ANSWERS:(a)   Cholinergic            (b)  Adrenergic ( C) Neurogenic            (d)  Myogenic EXPLANATION:(d)          Myogenic heart has contraction initiated by a special node of modified heart muscles called sinu-artial node (S.A node) e.g., the heart of vertebrates, tunicates and …

ANSWERS: (a)      Membranous                 (b)  Muscular (c)     Tendinous                       (d)    Ligamentous EXPLANATION:(a) (44)

ANSWERS: (a)    60-70 times                    (b)  70-80 times (c)   80-90 times                       (d)  85-95 times EXPLANATION: (b) (19)

ANSWERS:(a)  Hiss                    (b)     Loewis (c)   Ringer                         (d)  William Harvey EXPLANATION:(b) (11)

ANSWERS: (a)   Left auricle and left ventricle (b)  Post caval and right caval (c)   Right auricle and left auricle (d)  Right ventricle and pulmonary aorta EXPLANATION: (a)      The bicuspid valve is a valve consisting of two membranous flap or cups …

ANSWER :(a) Heart beat will increase     (b)  Heart beat will decrease (c)   Heart beat will stop          (d)  No effect EXPLANATION: (c)      Because excess of Ca++ will increase the force of contraction, thereby causing spasm of cardiac muscles. (15)

ANSWERS:(a)  ‘Lubb’ sound at the end of systole (b)  ‘Dub’ sound at the end of systole (c)   ‘Lubb’ sound at the beginning of systole (d)  ‘Dub’ sound at the beginning of systole EXPLANATION:  (c) (8)

ANSWERS: (a)   Lymph node                          (b)  Atrio-ventricular node (c)   Pacemaker                        (d)  Bulbus arteriosus EXPLANATION:(c)     Also called sino–atrial (S.A.) node. (32)

ANSWERS: (a)      The two ventricles together in humans (b)  The heart that contracts under stimulation from nervous system (c)   Left auricle and left ventricle in higher vertebrates (d)  Entire heart in lower vertebrates EXPLANATION:  (c) (13)

answers:(a)      RBC per ml of blood (b)  Haemoglobin per ml of blood (c)   Oxygen per ml of blood (d)  Nutrient per ml of blood EXPLANATION: (c) (17)

ANSWERS: (a)  Germany                            (b)  Italy (c)   Australia                            (d)  Austria EXPLANATION:(b)          The composite structure of Bowman’s capsule and glomerulus in knows as malpighian body or malpighian corpuscles after the italian microscopist Marcello Malpighi. (14)

ANSWERS: (a)  Sweat glands (b)  Sebaceous glands (c)   Hair follicles (d)  Hair cells EXPLANATION:(a) (14)

ANSWERS: (a)   Deamination                  (b)  Entropy (c)   Anuria                               (d)  None of these EXPLANATION:(c)      The condition in which kidney failed to form urine is called anuria. (47)

ANSWERS: (a)      Malpighian capsule        (b)  Bowman’s capsule (c)   Glomerulus                        (d)  Collecting tubule EXPLANATION: (a) Filtration takes place through semipermeable walls of glomerulus and Bowman’s capsule. Glomerulus and Bowman’s capsule are collectively called malpighian corpuscle. (6)

ANSWERS: (a)      Tea                                  (b)            Coffee (c)   Alcohol                               (d)  All the above EXPLANATION:(d)      Diuretic are those substances which increases the output of urine. (18)

ANSWERS: (a)   Urates, glucose and water only (b)  Ammonia, urea, uric acid and proteins (c)   Urea, sugar, water and ammonia (d)   Urea, glucose, salts, amino acids and water EXPLANATION: (d)      The glomerular filtrate contains a large amount of water and …

ANSWERS: (a)      Aldosterone hormone (b)  Antidiuretic hormone (c)   Parathormone (d)  All the above EXPLANATION: (a)   (14)

ANSWERS : (a)      The capillaries of the glomeruli have many more pores than other capillaries (b)  Endothelial cells lining the glomerular capillaries are very much flattened (c)   The efferent renal arteriole is smaller in diameter than the afferent renal arteriole …

(a)  On the organ of corti (b)  On the Reissner’s membrane (c)   In the sacculus (d)  In the semicircular canal ANSWER : A (31)

(a)      Ampulla                                     (b)  Sacculus (c)   Utriculus                                      (d)  Lagena EXPLANATION:A (23)

  (a)  Malleus                              (b)  Utriculus (c)   Eustachian tubes              (d)  Semicircular canal EXPLANATION:D (9)

Our ear can hear the frequency of sound waves   (a)  20 to 20,000 cycles/sec   (b)  1000 to 2000 cycles/sec (c)   5000 to 7000 cycles/sec  (d)  5000 to 10,000 cycles/sec EXPLANATION: (a)           These are called the limits of  audibility. Actual …