Testosterone Flashcards
What are the three types of hormone
Steroid
Peptide
Amine
What it the process of cortisol release
Hypothalamus CRH PITUITARY GLAND ACTH ADRENAL GLAND CORTISOL
What are the three types of hormone made of
Steroid made from cholesterol
Peptide and amine made from protein
How does a steroid hormone act and give examples of some steroid hormones
Diffuse through membrane and attach to receptor within a cell
Testosterone cortisone estrogen
What type of hormone is stored for later release
Peptide and amine
What type of hormone is released as soon as it is produced
Steroid
What is allosteric binding
Chemicals bind which either increases or reduces the effect of a hormone
Role of binding proteins
Transport deliver and protect
How is testosterone produced
Hypothalamus Gnrh Anterior pituitary Fsh and lh Testies and overies Testosterone and progesterone
In males where is 95% of testosterone produced and the other 5%
Leydig cells
Adrenals
How long and what is steroidogenisis
Production of steroid hormones and around 35mins
When is testosterone at its highest an lowest
8am and pm
Sex differences in t levels
Males 10-35nmol
Females less than 3.5nmol
What are some effects of testosterone
Increased: libido Hair loss at temple Facial hair Body hair Pubic hair Muscle strength Prostate growth Cardiac hypertrophy Recovery Protein synthesis RBc synthesis Osteoblast activity Gylcogen storage Lipolysis Neural transmission Aggression LDL
Decreased
HDL
Body fat
How is testosterone transported
60% shbg
38% albumin
2% free