Mhtcet Biology Practice Test 01 349 Created on December 26, 2022 By @asroeb Respiration and Circulation(Biology) Best of Luck! 1 / 40 Adam's apple is also called _____ vestibule pharynx osteon larynx 2 / 40 The structure which prevents the entry of food into respiratory tract is Pharynx Larynx Glottis Epiglottis 3 / 40 Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because pressure in the lungs is higher than the atmospheric pressure there is a negative pressure in the lungs there is a negative intra-pleural pressure pulling at the lung walls there is a positive intra-pleural pressure 4 / 40 The figure shows a diagrammatic view of human respiratory system with labels a, b, c and d. Select the option which gives correct identification and main function and/or characteristic a - trachea long tube supported by complete cartilaginous rings for conducting inspired air b - pleural membrane - surround ribs on both sides to provide cushion against rubbing c - alveoli - thin walled vascular bag like structures for exchange of gases d - lower end of lungs - diaphragm pulls it down during inspiration 5 / 40 Select the CORRECT statement. Expiration is initiated due to contraction of diaphragm Expiration occurs due to external intercostal muscles Intrapulmonary pressure is lower than the atmospheric pressure during inspiration Inspiration occurs when atmospheric pressure is less than intrapulmonary pressure. 6 / 40 Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL respectively. What will be his Expiratory Capacity if the Residual volume is 1200 mL? 2200 mL 2700 mL 1500 mL 1700 mL 7 / 40 The maximum volume of air a person can breath in after a forced expiration is known as: Total Lung Capacity Expiratory Capacity Vital Capacity Inspiratory Capacity 8 / 40 The volume of air inspired or expired by a healthy man per minute is 1000 ml - 1100ml 2500 ml - 3000 ml 6000 ml - 8000 ml 400 ml -500 ml 9 / 40 Reduction in pH of blood will Decrease the affinity of hemoglobin with oxygen Release bicarbonate ions by the liver Reduce the rate of heart beat Reduce the blood supply to the brain 10 / 40 Carbon monoxide combines with hemoglobin to form _____ Carbaminohemoglobin Carbonic acid Carboxyhemoglobin Cytochrome oxidase 11 / 40 Name the pulmonary discase in which alveolar surface area involved in gas exchange is drastically reduced due to damage in the alveolar walls Asthma Pleurisy Emphysema Pneumonia 12 / 40 Name the chronic respiratory disorder caused mainly by cigarette smoking Respiratory acidosis Respiratory alkalosis Emphysema Asthma 13 / 40 Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively? Increased respiratory surface; Inflammation of bronchioles Increased number of bronchioles; Increased respiratory surface Inflammation of bronchioles; Decreased respiratory surface Decreased respiratory surface; Inflammation of bronchiole 14 / 40 Which of the following is an occupational respiratory disorder? Botulism Silicosis Anthracis Emphysema 15 / 40 In which one of the following human organs the old and worn out RBC's are destroyed? Red bone marrow Liver Lymph node Kidney 16 / 40 Which blood cells can engulf bacteria by phagocytosis? Eosinophil and Basophil Basophil and Lymphocyte Neutrophil and Monocyte Neutrophil and Lymphocyte 17 / 40 Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body. Thrombocytes Erythrocytes Leucocytes Neutrophils 18 / 40 This is a granulocyte Eosinophil Erythrocyte Monocyte Lymphocyte 19 / 40 Which are the phagocytic cells from given diagram? I and V I and III I and IV I and II 20 / 40 The heart is covered by epicardium pericardium supracardium endocardium 21 / 40 Which valve is present at the opening of coronary sinus? Mitral valve Eustachian valve Thebesian valve Tricuspid valve 22 / 40 Mitral value and tricuspid value are attached to the papillary muscles by _____. Corpus callosum Columnae carnae Crura cerebri Chordae tendinae 23 / 40 Muscular ridges at inner surface of ventricles are called chordae tcndinae inter ventricular septum papillary muscle trabeculae carnae 24 / 40 The nodal tissue located in the lower left corner of the right atrium is _____ SA node AV node AV bundle Purkinje fibers 25 / 40 What is the stroke volume of an adult human heart? 50 ml 70 ml 90 ml 100 ml 26 / 40 Atrial systole lasts for _____ in cardiac cycle 0.1 second 0.3 second 0.5 second 0.7 second 27 / 40 The study of blood vessels is termed as angiology cardiology haematology histology 28 / 40 In the following diagram of T.S. of Artery, the region marked 'X' is ____ Tunica media Tunica externa Tunica interna Tunica albuginea 29 / 40 Bradycardia indicates slow heart rate generally below ____ per minute. 70 beats 75 beats 80 beats 60 beats 30 / 40 Blood pressure in pulmonary artery is more than that in pulmonary vein less than that in vena cavae same as that in the aorta more than that in the carotid. 31 / 40 Blood pressure in the mammalian aorta is maximum during Systole of the left atrium Diastole of the right ventricle Systole of the left ventricle Diastole of the right atrium 32 / 40 Deposition of fatty substances in the lining of arteries is termed as _____ Arteriosclerosis Atherosclerosis Arthritis Angiogenesis 33 / 40 ln ECG, P-wave represents Ventricular repolarisation Ventricular depolarisation Atrial depolarisation Atrial repolarisation 34 / 40 In the following diagrammatic representation of a standard ECG. 'T' represents depolarisation of atria depolarisation of ventricles repolarisation of atria repolarisation of ventrieles 35 / 40 The T- wave in an ECG represents Depolarisation of ventricles Electrical excitation of atria Beginning of systole Return of ventricles from excited state 36 / 40 Select CORRECT combination of statements for Lymphi) It helps to maintain fluid balance of the body.ii) It is contained in lymphatic vessels and lymphatic organs in mammals.iii) It is derived from tissue fluidiv) It contains less antibodies than plasmav) It flows in both directionsvi) It helps to conserve proteins and remove bacteria i, ii, iii, v ii, iii, iv, vi i, iv, v, vi iii, iv, v, vi 37 / 40 Which is NOT the function of lymph? Transport RBCs Drain excess tissue fluid Transport lymphocyte and antibodies Transport absorbed fat 38 / 40 Identify the one which is NOT a disorder of the circulatory system. Myocardial infarction Coronary artery discase Angina pectoris Emphysema 39 / 40 The hepatic portal vein drains blood to liver from Heart Stomach Kidneys Intestine 40 / 40 The following do not undergo cell division de-differentiated cells liver cells red blood cells skin cells Your score is The average score is 43% LinkedIn Facebook Twitter VKontakte 0% Restart quiz
