Which of the Following Statements Are True of Human Hair

question 41

Multiple Choice

Which of the following statements are true of human hair and nails? (Read carefully and select all of the correct statements.)

• A)Hair on the scalp provides thermal insulation.
• B)A fingernail is made of a very strong form of collagen.
• C)Each hair has a small muscle that flattens the hair to protect the skin from cold.
• D)Nails protect the proximal ends of the fingers and toes from mechanical injury.
• E)Eyelashes help keep dust out of the eyes.
• F)Fingernails are useful for picking up small objects.
• G)Hairs in the upper nasal cavities protect the nasal sinuses.
• H)A nail root or hair root is a site of mitosis.

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Definitions:

Monozygotic Twins

Twins that are genetically identical because they were formed from a single fertilized egg that split into two.

Genotype

The genetic constitution of an individual organism, often determining specific characteristics or traits.

Behavioural Geneticists

Scientists who study the role of genetics in influencing human behavior, often through twin and adoption studies.

Genetics

The study of heredity and the variation of inherited characteristics.