other endocrine glands

where is the thymus located?

in the chest. just above the heart and just behind the sternum.

When is the thymus the largest?

in infants and children, and will begin to shrink after puberty.

What hormones are secreted by the thymus?

secretes a group of hormones called thymosins

What do thymosins do?

help the maturation of disease fighting cells called T-lymphocytes (these are white blood cells ) and are involved in immunity

where is the pineal gland located?

deep inside the centre of the brain.

when is the pineal gland the largest?

is largest (being the size of a pea) in childhood, and will eventually calcify in adulthood and old age.

What hormone does the pineal gland secrete?

melatonin

What is the role of melatonin?

regulates sleep patterns.

how is melatonin stimulated?

by darkness and is inhibited by light.

what hormones are associated with the stomach and small intestine?

hormones that coordinate digestion

What hormones are associated with the kidneys?

Erythroprotien (EPO)

What does erythroprotein do?

it stimulates red blood cell production.

what hormone is associated with the heart?

atrial natriuretic factor

what does atrialnatriuretic factor do?

decreases blood pressure

what hormone are secreted by placenta?

hormones that help maintain pregnancy and assist foetal development and stimulate lactation

Where are androgens produced?

the gonads (testes and the ovaries)

What is an example of an androgen?

testosterone

what is androgens responsible for?

development of sex organs and characteristics; continuous production of sperm

What is oestrogen and progesterone?

is the female sex hormone which is produced by the ovaries. it os responsible for the development and maintenance of female sex characteristics

What does oestrogen do?

regulation of menstrual cycle, breast development, development of "female body shape"

what does progesterone do?

regulates the menstrual cycle, maintains the corpus lute in early pregnancy, and balances the effect of oestrogen

What does testosterone do?

Influences sperm cell development and also produces the male secondary sex characteristics such as body hair and deep voice and an increased metabolism

how is follicle stimulating hormone and luteinising hormone secreted?

the hypothalamus secreted the gonadotropin releasing factor, and then the anterior pituitary secretes lutenising and follicle stimulating hormone

what does lutenising hormone do?

stimulates ovulation, corpus luteum formation, and testosterone production

What does follicle stimulating hormone do?

development of ovarian follicles and sperm.