| 
    
        | CSS  :: Circulatory System Physiology |  | 
	 
 
 |  |  | 
| 
	
	
           
                       | 
    
    
        | 
            
            
                | 1. | Heart shows rhythmic contractions and expansions withour pause and fatigue which may be defined as |  
                | 
			 
				
					
				| A. | Circulation in the heart | B. | Heart beat |  
				 				 | C. | Both (a) & (b) | D. | None of these |  
                        
                        
                            Answer: Option B Explanation:    |  
 
            
            
                | 2. | The contraction of the heart during heartbeat is known as: |  
                | 
			 
				
					
				| A. | Systole | B. | Diastole |  
				 				 | C. | Diastasis | D. | None of these |  
                        
                        
                            Answer: Option A  Explanation:    |  
 
            
            
                | 3. | The relaxation of heart during heart beat is called: |  
                | 
			 
				
					
				| A. | Systole | B. | Diastole |  
				 				 | C. | Diastasis | D. | None of these |  
                        
                        
                            Answer: Option B Explanation:    |  
 
            
            
                | 4. | Cardiac cycle in frog is completed in: |  
                | 
			 
				
					
				| A. | 0.74 seconds | B. | 0.84 seconds |  
				 				 | C. | 0.94 seconds | D. | 1.4 seconds |  
                        
                        
                            Answer: Option C Explanation:    |  
 
            
            
                | 5. | How many times dose the heart of frog beat per minute: |  
                | 
			 
				
					
				| A. | 54 times | B. | 64 times |  
				 				 | C. | 72 times | D. | 84 times |  
                        
                        
                            Answer: Option B Explanation:    |  
 
            
            
                | 6. | How many times does the heat of man beats per minute |  
                | 
			 
				
					
				| A. | 52 times | B. | 62 times |  
				 				 | C. | 72 times | D. | 82 times |  
                        
                        
                            Answer: Option C Explanation:    |  
 
            
            
                | 7. | Time taken to complete a cardiac cycle in man is: |  
                | 
			 
				
					
				| A. | 0.73 second | B. | 0.83 seconds |  
				 				 | C. | 0.94 seconds | D. | None of these |  
                        
                        
                            Answer: Option B Explanation:    |  
 
            
            
                | 8. | Which of these is time taken respectively in contraction and relaxation of atria in man? |  
                | 
			 
				
					
				| A. | 0.1 second and 0.7 second | B. | 0.3 second and 0.5 second |  
				 				 | C. | 0.2 second and 0.6 second | D. | 0.4 second and 0.4 second |  
                        
                        
                            Answer: Option A Explanation:    |  
 
            
            
                | 9. | Time taken respectively in contraction and relaxation of ventricles is: |  
                | 
			 
				
					
				| A. | 0.3 second and 0.5 second | B. | 0.2 second and 0.6 second |  
				 				 | C. | 0.1 second and 0.7 second | D. | 0.5 second and 0.3 second |  
                        
                        
                            Answer: Option A Explanation:    |  
 
            
            
                | 10. | During average span of 50 years of life, the human heart beats about for: |  
                | 
			 
				
					
				| A. | Two bullion time | B. | Twenty bullion time |  
				 				 | C. | Ten bullion time | D. | Fifty bullion time |  
                        
                        
                            Answer: Option A Explanation:    |  
 
 
			
			
 
 
 
 Read more:
 |  |