Midterm II Flashcards
Sex
Male/Female
- classification of individual based on biological foundation
- Genetics
- determined by our sex chromosomes and genes in those chromosomes
- anatomy
- physical differences between males and males
Gender
(Man/Woman)
Definition: social construct
-classification of individual based on behavioral, psychological, and cultural traits
-legal status
Gender role
Masculine/feminine
Definition: cultural expectation of behavior for each gender
Genitalia
Penis and testes
Vs
Vagina and clitoris
Identity
A persons own sense of being male or female
No assurance that ones personal gender identity will be consistent with ones biological sex
Sex is determined by
Presence of Y chromosome
Sperm Cells have…..
Either Y or X chromosome
Egg cells have ……
One X chromosome
Meiosis
Reduces 46 chromosomes into 23 to make gametes or eggs or sperm
Male/Female chromosomes
Male XY
Female XX
Y Chromosome
The smallest
- 100 genes or less
- many genes of Y control sperm production and capability to grow testes
- yet most genes not essential for life
X Chromosome
Contains more than 1000 genes
- genes for color vision, blood clotting and more
- X in most cells of females are inactivated
- Barr body
6th Week of prenatal development
First six weeks the Gonads and genitalia are undifferentiated
Embryos have two ducts systems
Müllerian
And
Wolffian
Müllerian
One duct system in embryo
- becomes female reproductive anatomy
Wolffian
One duct system in embryo
-becomes male reproductive anatomy
8th-12th week of prenatal development
By 8th week Sex chromosome influences anatomical and hormonal development
By 12th week genitalia have been differentiated and usually identifiable as male or female
Male differentiation
Determining region of Y called SRY gene and Sox9 gene aid in development of testes
In testes leydig cells produce testosterone
Male differentiation Testosterone
Wolffian duct system will develop into epididymis, vas deferens and seminal vesicles
DHT leads to growth of penis and scrotal sac
Sertoli cells produce Anti-Müllerian hormone
- stops process of female duct system
Female differentiation
If no SRY gene undifferentiated gonad will develop into ovary
Müllerian duct system will develop into uterus, Fallopian tubes and upper portion of vagina
Sex differentiation in Brain
Sizes differ in men and women
- parts of frontal Cortex involved in reasoning and decision making are larger in woman
- males have larger amygdalae which is important in anger and sex drive
Physiological differences
Sex differences
- vary is almost every organ of body
- M greater lungs n fewer breaths
- F thin skin and less acne
- mortality rates
- M>F
- drug metabolism
- F have less enzyme that breaks down alch and become more intoxicated with same Alch
Behavioral differences
Gender differences
Gender roles=gender specific behaviors and personalities expected in our culture
Stereotypes
- preconceived ideas about the way men and women act
Interaction between nature and nurture
- biological factors may influence behaviors
- social situation can affect physiology