Answer:
True
Explanation:
The amount of blood that the heart pumps per minute through the circulatory system is called the cardiac output.
Stroke volume is the amount of blood that pushed out of the ventricle in one contraction or one beat.
The cardiac output is calculated by multiplying the number of heartbeats per minute (heart rate) and the stroke volume.
Thus, cardiac output = Heart rate × Stroke volume. The value of cardiac output is expressed as litre/minute.
Answer:
The most common term referred to in first aid is ABC. This stands for airway, breathing, and circulation. A fourth step will appear in the emergency procedures for some facilities.
-Airway: Make sure the airway is clear. Choking, which results from the obstruction of airways, can be fatal.
-Breathing: Once the airways are confirmed to be clear, determine whether the person can breathe, and, if necessary, provide rescue breathing.
-Circulation: If the person involved in the emergency situation is not breathing, the first aider should go straight for chest compressions and rescue breathing. The chest compressions will promote circulation. This saves valuable time. In emergencies that are not life-threatening, the first aider needs to check the pulse.
-Deadly bleeding or defibrillation: Some organizations consider dressing severe wounds or applying defibrillation to the heart a separate fourth stage, while others include this as part of the circulation step
Answer:
An extinct bird from around the 1690’s
Explanation:
The dodo is an extinct flightless bird that was endemic to the island of Mauritius, which is east of Madagascar in the Indian Ocean. The dodo's closest genetic relative was the also-extinct Rodrigues solitaire.
Hope this helps!
Answer:
Both (a) and (b).
Explanation:
Inflammation is a type of defense mechanism in the body. This is a type of innate immunity present in the organism from birth. The acute or chronic reaction determines the symptoms of inflammation.
The redness and heat occurs in the inflamed area due to the increase blood flow in the affected area. Tissue swelling or edema may occur due to the accumulation of fluid that increases the phagocytic activity of WBCs and other useful chemicals that can reach to the damaged area.
Thus, the answer is option (d).
