An Increase in Heart Rate During Inspiration, with a Decrease

question 26

Multiple Choice

An increase in heart rate during inspiration, with a decrease in this rate during expiration, is an expected finding in:

• A) adults under stress.
• B) 4-year-old children.
• C) pregnant women.
• D) premature infants.

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Definitions:

Identical Twins

Twins who originate from a single fertilized egg that splits and develops into two separate embryos, sharing the same genetic makeup.

Zygote

The cell formed by the union of a sperm and an egg at the beginning of conception, representing the earliest stage of human development.

Fertilization

The process by which male and female reproductive cells (gametes) combine to produce a new cell (zygote) that will develop into a fetus.

Gene Expressions

The process by which the information encoded in a gene is used to direct the assembly of a protein molecule.