What is the significance of atrio-ventricular node and atrio-ventricular bundle in the functioning of heart ?

What is the significance of juxtaglomerular apparatus (JGA) in kidney function?

Go through the following statements (i) The inner surface of atria have got transverse muscular ridges called papillary muscles. (ii) Chordae tendinae are special fibrous cords attached to the AV valves and prevent them from collapsing back into the atria during powerful vantricular contraction (iii) The neurogenic heart stops functioning immidiately after removal from the body. (iv) The conduction of cardiac impulse is slowest in the A.V. node. Which of these are correct ?

Which sequence of events best represents the conduction of an impulse through the heart? (i) Sinoatrial node (ii) Atrioventricular node (iii) Purkinje fibres (iv) Bundle of His

What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL ?

a] What is puberty ? b] Describe in brief the functions of the following parts in the human male reproductive system: {i) Testes (ii) Seminal vesicle (iii) Vas deferens {iv) Urethra OR Explain the significant function of each structure in human male reproductive system. c] Why are testes located outside the abdominal cavity? d] State how sperms move towards the female germ cell?

If due to some injury the chordae tendineae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect ?

Given these structures of the conduction system of the heart 1. Bundles of His 2. AV node 3. Bundle branches 4. Purkinje fibres 5. SA node Choose the arrangement that lists the structures in an order of an action potential passes through them.