Question

Define heart beat?
Write heart beat of the following animals
Human
Rabbit
Frog
Elephant
Whale
Infants​

Answer 1

Heart Beat- It is defined as rhythmic contraction and expansion of the heart.

Some Facts about heart beat

• Heartbeat is generally higher in women than men.

• The rate of heart beat is also higher in children and infants.

• The heart beat of aged people is less.

• Heart beat can be measured with an instrument called stethoscope which was invented by Laennec.

• Heart beat can be maintained according to the environment and that condition is known as ectothermy.

• Heart beat is inversely related with size of the body that is big body less heart beat and vice versa.

Heart beat of the given animals are as follows (in per minute)

Human - 72

Rabbit - 220

Frog - 64

Elephant - 28

Whale - 25

Infants - 120

Answer 2

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$\huge{\pink {\sf\underline{Heartbeat}}}$

A heartbeat is a two-part pumping action that takes about a second. As blood collects in the upper chambers (the right and left atria), the heart's natural pacemaker (the SA node) sends out an electrical signal that causes the atria to contract.

• Human - 72

• Rabbit - 220

• Elephant - 28

• Whale - 25

• Infants - 120