Biology
Geetika's mother has certain ailments of the heart. She is often very stressed and has anxiety. Sometimes, she experiences her heart beating too hard or too fast and occasionally even skipping a beat. Which of the following heart-related conditions explains her problem ?
- Hypertension
- Heart attack
- Palpitations
- Cardiac arrest
Answer
Palpitations
Reason — Palpitations are caused by stress or anxiety. Sometimes certain types of food may also cause palpitations.
Hypertension is high blood pressure, usually without noticeable heartbeat sensations. A heart attack is a severe condition involving interruption of blood supply to the heart muscle, often with chest pain. Cardiac arrest is sudden stopping of the heart (life-threatening emergency).
Related Questions
The path which the blood flows through during pulmonary circulation is:
- RA → RV → Pulmonary arteries → Lungs → Pulmonary veins → LA
- LA → LV → Pulmonary veins → Lungs → Pulmonary arteries → RA
- LA → LV → Aorta → Body → Vena Cavae → RA
- RA → RV → Vena Cavae → Body → Aorta → LA
Karl Landsteiner classified human blood into four categories on the basis of proteins (antigens) found on the surface of the RBCs. Compatibility of blood groups must be checked during blood transfusion. Which of the following statements are incorrect ?
P. Blood group 'AB' is the universal donor as it does not contain any antibodies.
Q. Blood group 'AB' is the universal recipient as it contains both the antigens 'A' and 'B'.
R. Blood group 'O' is the universal recipient as it does not contain any antigens.
- Only R
- Only P and R
- Only P and Q
- Only Q and R
Assertion (A): Veins carry blood away from the heart to different organs of the body.
Reason (R): Veins carry deoxygenated blood from most organs of the body except lungs.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): None of the arteries carry deoxygenated blood in the human body.
Reason (R): Pulmonary artery carries deoxygenated blood from the right ventricle of the heart to the lungs.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.