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bio aspects of aging > Chapter 1 Aging > Flashcards

Chapter 1 Aging Flashcards

1
Q

Aging

A

The process of becoming older, referring specifically to humans

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2
Q

Gerontology

A

The scientific study of old age and its particular problems

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3
Q

Geriatrics

A

The medical specialty focused on care and treatment of older persons

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4
Q

Embryo

A

Fertilization to 8 weeks of development

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5
Q

Fetus

A

Week 8 of development to birth

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6
Q

Clinical age

A

Based on the last menstrual period

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7
Q

Developmental age

A

Begins with fertilization

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8
Q

18-36

A

How many hours after fertilization does it take for zygote to divide into 2 cells?

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9
Q 
Germinal period
Embryo
Fetus
Neonate
Infant
Child
Adolescent 
Adult
A

What are the 8 life stages?

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10
Q

Death

A

Permanent cessation of life functions

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11
Q

Genetics

A

The study of heredity

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12
Q

Chromosomes

A

Genes with DNA, consisting of 46 pairs

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13
Q

Karyotype

A

Display of chromosomes

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14
Q

Autosomal chromosomes

A

All chromosomes except sex chromosomes; 22 pairs

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15
Q

Gametes

A

Sex cells (sperm and egg) produced via meiosis

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16
Q

Homologous

A

Each gamete receives only one chromosome from each pair

17
Q

Genes

A

Functional unit of heredity, consisting of portion of DNA

18
Q

Alleles

A

Similar genes on homologous chromosomes

19
Q

Homozygous

A

2 alleles are identical for a particular trait

20
Q

Heterozygous

A

2 alleles are different

21
Q

Dominant

A

When a genes is expressed

22
Q

Recessive

A

When a gene is not expressed

23
Q

Genotype

A

Alleles that a person has for a given trait

24
Q

Phenotype

A

Expressed gene (person’s appearance)

25
Q

Sex-linked traits

A

Traits affected by genes on sex chromosomes, most being X-linked

26
Q

Culture, genetics, lifestyle
Diet, stress, bilingualism
Religion, wealth, poverty, etc.

A

Factors affecting aging brain

27
Q

Apoptosis

A

When a telomere gets damaged or shrinks too much

bio aspects of aging (2 decks)

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