Chapter 3.3 Flashcards
Endocrine System
-system of glands that release hormones into the bloodstream
Hormone
-chemical in bloodstream that influences particular organs and glands
-slower action than NTs
Pituitary Gland
-master gland
-controlled by hypothalamus
-directs other glands of the body
Oxytocin
-a pituitary hormone
-role in birth, love, social behaviours, treatment of outsiders
Adrenal Gland
-tissue located on top of kidneys
-release adrenaline and cortisol during states of emotional arousal and stress
Chromosme
-inside a cells nucleus
-carries genes
-humans usually have 46 chromosomes
DNA
-gene blueprint
-contains cell replication info
Genotype
-our genetic makeup
-fixed at birth
Phenotype
-observable traits
-interaction between genotype and environment
Behavioural Genetics
-examines influence of nature and nurture on psychological trails
Myth 1 of Heritability
-heritability applies to a single individual
Myth 2 of Heritability
-heritability tells us whether a trait can be changed
Myth 3 of Heritability
-heritability is a fixed number
Heritability
-% of the variability in a trait across individuals that is due to genes
Behavioural Genetic Studies
-track presence of a trait among relatives
-help determine how much genes and environment contribute to a trait
