Consider the following four statements (i)-(iv) and select the correct option
(i) Fish heart contains only oxygenated blood
(ii) Closure of A-V valves produces the second heart sound
(iii) The vascular connection between the digestive track and kidney is called hepatic portal system
(iv) Purkinje fibres are nerve fibres present in the heart wall.

Indicate whether the following statements are true or false : (i) Fish heart contains only oxygenated blood. (ii) Closure of A-V valves produces the second heart sound. (iii) The vagus nerve retards the heart rate. (iv) The S-A node is the pacemaker of the heart. (v) Columnae carneae occur in the auricles. (vi) Purkinje fibres are nerve fibres present in the heart wall.

Consider the following four statements (i)-(iv) and select the correct option. (i) Actin is present in thin filament. (ii) H-zone of striated muscle fibre represents both thick and thin filaments. (iii) There are 11 pairs of ribs in man. (iv) Sternum is present on ventral side of the body.

Read the following statements carefully and select correct choice from below: (a) First heart sound lub is produced due to closure of atrioventricular valves, (b) First heart sound is of longer duration than second heart sound dub.

Consider the following four statement (i) - (iv) and select the correct option. (i) SA node is natural pacemaker of heart (ii) Human heart has inter-auricular foramen (iii) Right atrioventricular valve is a semilunar value (iv) Normal systolic and diastolic pressure of human is 120 and 60 mm Hg respectively.

Consider the following four statement (i) - (iv) and select the correct option. (i) SA node is natural pacemaker of heart (ii) Human heart has inter-auricular foramen (iii) Right atrioventricular valve is a semilunar value (iv) Normal systolic and diastolic pressure of human is 120 and 60 mm Hg respectively.

Read the following statements carefully and select correct choice from below: br (a) First heart sound lub is produced due to closure of atrioventricular valves, br (b) First heart sound is of longer duration than second heart sound dub.

Read the following statement and choose the correct option. A. The first heart sound (lub) is associated with the closure of both semilunar valves. The duration between the adjacent second heart sound and first heart sound is 0.3 seconds C. The cardiac output is the stroke volume multiplied by the number of heartbeats per minute.

Read the following statement and choose the correct option. A. The first heart sound (lub) is associated with the closure of both semilunar valves. The duration between the adjacent second heart sound and first heart sound is 0.3 seconds C. The cardiac output is the stroke volume multiplied by the number of heartbeats per minute.

Read the following statements and select the correct option (i) Blood cells secrete fibres of structural proteins called collagen and elastin (ii) Neuroglial cells protect and support the nephrons (iii) Osteocytes are present in spaces called lacunae (iv) Striated muscle fibres are bundled together in a parallel fashion (v) Biceps are involuntary and striated.