Adrenaline (also known as epinephrine) increases the following effects on the heart:

Heart Rate:

Adrenaline increases the heart rate (positive chronotropic effect).

Contractility:

It increases the force of heart muscle contractions (positive inotropic effect).

Conduction Velocity:

It enhances the speed of electrical conduction through the heart (positive dromotropic effect).

Cardiac Output: 

Due to the increased heart rate and contractility, adrenaline boosts the overall cardiac output.

1. SHORT NOTE:Role of the first arriving rescuer or EMT in a mass-casualty incident

1. SHORT NOTE

1. SHORT NOTE OF RESPIRATORY SYSTEM

1. Vitamin A
2. Vitamin C
3. Vitamin D
4. Vitamin K
5. All of these

1. See the answer