TEST 3 (UNITS 8 - 10) Flashcards
how we grow, develop, and change throughout the lifespan.
DEVELOPMENTAL PSYCHOLOGY
Rod-shaped structures, found in the nuclei of body cells, that contain all the genes and carry all the hereditary information.
CHROMOSOMES
HOW MANY CHROMOSOMES ARE FOUND IN EACH CELL?
23 PAIRS
- 22 AUTOSOMAL PAIRS
- 23RD PAIR ARE SEX CHROMOSOMES
Genes are segments of this located on each of the chromosomes
DNA
Within the chromosomes, the segments of DNA that are the basic units for the transmission of hereditary traits
GENES
A gene that is expressed in the individual
DOMINANT TRAIT
A gene that will not be expressed if paired with a dominant gene, but will be expressed if paired with another recessive gene
RECESSIVE TRAIT
It carries the genes that determine one’s sex and primary and secondary sex characteristics
SEX CHROMOSOMES
3 STAGES OF PRENATAL DEVELOPMENT
- Period of the zygote
- Period of the embryo
- Period of the fetus
STAGE OF PRENATAL DEVELOPMENT: Time after Conception: 1 to 2 weeks
PERIOD OF THE ZYGOTE
STAGE OF PRENATAL DEVELOPMENT: Zygote attaches to the uterine lining.
PERIOD OF THE ZYGOTE
STAGE OF PRENATAL DEVELOPMENT: At 2 weeks, zygote is the size of the period at the end of this sentence.
PERIOD OF THE ZYGOTE
STAGE OF PRENATAL DEVELOPMENT: Time after Conception: 3 to 8 weeks
PERIOD OF THE EMBRYO
STAGE OF PRENATAL DEVELOPMENT:
Major systems, organs, and structures of the body develop.
PERIOD OF THE EMBRYO
STAGE OF PRENATAL DEVELOPMENT: * Period ends when first bone cells appear.
PERIOD OF THE EMBRYO
STAGE OF PRENATAL DEVELOPMENT: * At 8 weeks, embryo is about 2.5 cm long and weighs about 4g
PERIOD OF THE EMBRYO
STAGE OF PRENATAL DEVELOPMENT:9 weeks to birth (38 weeks)
PERIOD OF THE FETUS
STAGE OF PRENATAL DEVELOPMENT:Rapid growth and further development of the body structures, organs, and systems.
PERIOD OF THE FETUS
What are the environmental influences on an unborn child?
- TERATOGENS
2. CRITICAL PERIOD
Harmful agents in the prenatal environment that can have a negative impact on prenatal development and even cause birth defects.
TERATOGENS
A period that is so important to development that a harmful environmental influence can keep a bodily structure or behaviour from developing normally.
CRITICAL PERIOD
4 ADAPTATIVE NEONATE REFLEXES
- sucking
- swallowing
- coughing
- blinking
What are the physical changes that occur during INFANCY?
- sitting, standing, and walking;
- physical and motor development proceeds from the head downward to the trunk and legs, so babies lift their heads before they sit, and sit before they walk, etc.
What are the physical changes that occur during PUBERTY?
- ejaculation, menarche.
- begins with the onset of puberty–biological changes characterized by a period of rapid physical growth and change that culminates in sexual maturity.