CIRCULATION + EXCRETION TEST HELD ON 23-01-2019

RAHMAN BIOLOGY CLASSES

Topic: Circulation and Excretion                                                         FM- 50

Q-1-S.A node is called pacemaker because:

(a) Only it can generate action potentials

(b) It is present in the right upper corner of the right atrium

(c) It can generate the maximum number of action potentials

(d) It is made up of cardiac muscle nodal tissue

Q-2-Match the column -i with column-ii:

Column-i                  Column-ii

A.Cardiac arrest             I.Heart not pumping bloodeffectively

B. Heart failure          II.Heart muscle is suddenlydamaged

C. Heart attack           III.Acute chest pain

D. Angina                        IV.Heart stops beating

Q-3-Systematic circulation takes place between which chambers of heart?

(a) Left auricle and Left ventricle

(b) Left ventricle and right ventricle

(c) Right ventricle and left auricle

Q-4- Which statement is incorrect?

(a) Every part of conduction pathway of heart can generate action potential without any

external stimuli

(b) The SAN (S.A node) can generate the maximum number of action potentials

(c) Heart rate is higher in old person than young person

(d) Heart rate is more in children, infants than adult person

Q-5-All veins carry deoxygenated blood except:

      (a) Renal vein     (b) Hepatic vein     (c) Hepatic portal vein     (d) Pulmonary vein

Q-6- Sino-atrial node (SAN)

(a) Present in the right upper corner of the right atrium

(b) Can generate the maximum number of action potentials

(c) Responsible for initiating and maintaining the rhythmic contractile activity of heart

(d) All of the above

Q-7- During ventricular systole

(a) Atria undergoes relaxation(b) Atria undergoes contraction

(c) First atria contract than relax(d) First atria relax than contract

Q-8-Ion which present maximum in blood plasma:

(a) K+         (b) Ca+(c) Mg2+           (d) Na+

Q-9- Which statements are not correct with the regarding of human's heart?

(A) Atria are smaller than ventricles

(B) The opening between the right atrium and right ventricle is guarded by the valve formed of two muscular flaps

(C) Heart, the mesodermally derived organ, is situated in the thoracic cavity cavity, in between the two lungs, slightly tilted to the left.1

(D)During ventricular systole tricuspid and bicuspid valves are open

(a)A,B        (b)B,C     (c)B,D     (d) C,D

Q-10- Second heart sound (DUP) is produced due to:

(a) Closing of semilunar valve (b) Closing of tricuspid valve

(c) Opening of bicuspid valve (d) Opening of semilunar valve

Q-11- A cardiac cycle involves:

(a) Joint diastole – Ventricular systole – Auricular systole

(b) Auricular systole – Ventricular systole – Complete cardiac diastole

(c) Auricular systole – Joint diastole – Ventricular diastole

(d) Auricular systole – Ventricular diastole – Joint diastole

Q-12- Which vessel carries most oxygenated blood?

(a) Pulmonary artery (b) Pulmonary vein (c) Coronary artery (d) Cerebral artery

Q-13- Cause of closure of semilunar valves in human heart is:

(a) Ventricular diastole and increase in ventricular pressure

(b) Ventricular systole and increase in ventricular pressure

(c) Ventricular diastole and decrease in ventricular pressure

(d) Atrial diastole and decrease in atrial pressure

Q-14- The major proteins of plasma are:

(a) Albumin, Globulin and Haemoglobin (b) Collagen, Elastin and Fibrinogen

(c) Fibrinogen, Globulin and Albumin (d) Prothrombin, Fibrinogen and Collagen

Q-15- In ECG which wave represent depolarisation of the Atria?

(a) P-wave (b) QRS- complex(c) T-wave (d) Q-wave

Q-16- Find out the incorrect statement about ECG:

(a) P-wave represents the electrical excitation of the atria

(b) QRS complex representations the depolarisation of the ventricle

(c) End of T-wave represents the end of ventricle diastole

(d) By counting the number of QRS complexes that occur in a given time period any body

Q-17- Which type of blood contains A antibodies (but not B-antibodies) in the plasma and lack Rh antigen?

(a) Potassium oxalate and sodium citrate (b) Calcium ions and platelets factors

(c) Platelet factor and oxalates (d) Heparin and citrates

Q-18- The cardiac pacemaker in a patient in a patient fails to function normally. The doctors find that an artificial pacemaker is to be grafted in him. It is likely that it will be grafted at the site of:

(a) Purkinje system (b) Sinuatrial (c) Atrioventricular node (d) Atrioventricular bundle

Q-19- The blood does not clot inside the body because of:

(a) Oxygenation of blood (b) Movement of blood

(c) Heparin in blood (d) Absence of fibrinogen in blood

Q-20- The rate of conduction of impulse in the conduction pathway of heart, is fastest in:

(a) S.A. node (b) A.V. node (c) Bundle of His (d) Purkinje’s fibers

Q-21- The pH of human urine is approximately:

(a) 6.5             (b) 7               (c) 6                (d) 7.5

Q-22- Which one of the following is also known as antidiuretic hormone?

(a) Oxytocin (b) Vasopressin (c) Adrenalin (d) Calcitonin

Q-23- During micturition

(a) Urinary bladder relaxes and ureter contracts

(b) Urinary bladder contracts and ureter contracts

(c) Urinary bladder relaxes and urethra contracts

(d) Urinary bladder contracts and urethra relaxes

Q-24- Conditional reabsorption of Na⁺ and water takes place in:

(a) PCT              (b) DCT           (c) Henle’s loop          (d) Bowman’s capsule

Q-25- Which statement is not correct about glomerular filtration?

(a) On an average 1100-1200 mL of blood is filtered by the kidney per minute

(b) Glomerular filtrate is blood plasma except protein

(c) GFR in a healthy individual is approximately 125mL/minute or 180 litres per day

(d) Complete blood plasma is filtered in ultrafiltration process

Q-26- Correct order of excretory organ in Cockroach, Earthworm and Rabbit respectively:

(a) Skin, Malpighi tubules, Kidney (b) Malpighi tubules, Nephridia, Kidney

(c) Nephridia, Malpighi tubules, Kidney (d) Nephridia, Kidney, Green gland

Q-27- Which disorder is not associated with excretion?

(a) Glycosuria (b) Uremia (c) Gout (d) Myasthenia gravis

Q-28- When substance is present in nephric filtrate but absent in urine?

(a) Urea (b) Proteins (c) Glucose (d) Electrolytes

Q-29- Which one of the following statements is correct with respect to kidney function regulation?

(a) When someone drinks lot of water, ADH released is suppressed

(b) Exposure to cold temperature stimulates ADH release

(c) An increase in glomerular blood flow stimulates formation of angiotensin II

(d) During summer when body loses lot of water by evaporation, the release of ADH is

suppressed.

Q-30- A fall in glomerular filtration rate (GFR) activates:

(a) Adrenal medulla to release adrenaline (b) Posterior pituitary to release vasopressin

(c) Juxta glomerular cells to release renin (d) Adrenal cortex to release aldosterone

Q-31- Snake, a terrestrial animal that excretes nitrogen wastes in the form of uric acid, is called

(a) Uricotelic (b) Ureotelic (c) Ammonotelic (d) Not confirmed for any type

Q-32- Which of the following is excreted in human urine?

(a) Ammonia (b) Urea (c) Uric acid (d) Amino acid

Q-33- Which one of the following options shows correct matching pair?

(a) Man-Ureotelic (b) Bird-Ammonotelic (c) Fish-Uricotelic (d) Frog-Uricotelic

Q-34- Deamination occurs in:

(a) Kidney (b) Liver (c) Nephron (d) Both (a) and (b)

Q-35- Vasa recta refers to

(a) Rectum region of the insect 

(b) Blood capillaries in invertebrates

(c) A fine blood capillary network of afferent arteriole

(d) A fine capillary which runs parallel to Henle’s loop

(e) Juxtaglomerular complex of nephron

Q-36- Human kidney is:

(a) Metanephric (b) Meronephric (c) Protonephric (d) Archinephric

Q-37- Inner lining of the kidney has

(a) Nephrocyte (b) Podocyte (c) Coanocyte (d) Amoebocyte

Q- Mark the wrong match

Q-38- Bowmen’scapsule                –          Glomerular

Q-39- DTC                                          –          Absorption of glucose

Q-40- Henle’s loop                           –          Concentration of urine

Q-41- PCT                                           –          Absorption of Na⁺ and K⁺ ions

Q-42- Glucose amino acids are reabsorption in the

(a) Proximal tubule (b) Distal tubule (c) Collecting duct (d) Loop of Henle

Q-43- In 24 hours, total glomerular filtrate formed in human kidney is:

(a) 1.7 litres (b) 7 litres (c) 17 litres (d) 170 litres

Q-44- A large quantity of fluid is filtered everyday by the nephrons in the kidneys. Only about 1% of it is excreted as urine. The remaining 99% of the urine

(a) Is stored in the urinary bladder (b) Is reabsorbed into the blood

(c) Gets collected in the renal pelvis (d) Is lost as sweat

Q-45- Enzyme released from kidney is

(a) Renin (b) Uricase (c) Pepsin (d) None of these

Q-46- Which one of the following is corrected for a normal human?

(a) pH of urine is around 8

(b) On an average, 25-30 mg of urea is excreted via urine

(c) Presence of ketone bodies in urine is an indicator of diabetes mellitus

(d) Glycosuria can be treated with hemodialysis

(e) Relaxation of smooth muscles of bladder and simultaneous contraction of urethral

sphinctercause release of urine

Q-47- Colour of urine is yellow due to this pigment

(a) Urochromogen (b) Urochrome (c) Carotene (d) None of these

Q-48- The condition of where urea accumulates in blood is:

(a) Glycosuria (b) Uremia (c) Ketonuria (d) Acidosis (e) Anemia

Q-49- Hematuria refers to:

(a) RBCs in urine (b) WBCs in urine (c) Platelets in urine (d) iron is urine

Q-50- The net glomerular filtration rate in an average adult is

(a) 75mL min^-1(b) 50 mL min^-1(c) 125 mL min^-1(d) 100 mL min^-1