Human Physiology
Unit Six
Endocrine System
Glands
Exocrine glands are those that secrete their
products through ducts
Exocrine gland examples include:
~ sudoriferous glands
~ sebaceous glands
~ lacrimal glands
~ pancreas
~ salivary glands
Glands
Endocrine glands are those that are
ductless and secrete their products directly
into the bloodstream
Endocrine gland examples include:
~ pituitary gland
~ thyroid gland
~ pancreas
~ adrenal glands
Glands
Some organs have exocrine and/or
endocrine functions:
~ liver (bile, angiotensinogen,
erythropoietin, calcitriol)
~ kidneys (renin, erythropoietin)
~ skin (sweat, sebum, calcitriol)
Hormones
Hormones are biological
regulatory compounds secreted
by endocrine glands that alter the
metabolism of the body cells they
target
Hormones function to chemically
regulate body metabolism, growth
and reproduction
Lipid Based
Hormone
Action
Non-Lipid Based Hormone Action
Homeostatic
Control of
Hormone
Secretion
See handout for hormones,
their sources, target cells,
and actions
See handout for endocrine
disorders, their cause and
symptoms
Gamete Formation
Remember:
+ mitosis occurs
in all body cells
+ functions of
mitosis are
growth,
repair &
replacement
Gamete Formation
2n
2n
2n
Gamete Formation
Remember:
+ meiosis occurs
only in sex cells
of
the gonads
+ function of
meiosis is gamete
production
Gamete Formation
2n
n
n
n
n
Gamete Formation
The haploid
gametes fuse in
fertilization,
producing
a
This process
diploid
zygote
combines genes from
both parents,
producing genetic
diversity and
Gamete Formation
Spermatogenesis is
the meiotic
division that takes
place
in
the
This process, as
seminiferous
tubules
well as the
of
testes
production of
testosterone, is
Spermatogenesis
Spermatogenesis
Gamete Formation
Gamete Formation
Sperm
Spermatids
Secondary
spermatocyte
Primary
spermatocyte
Spermatogonium
Gamete Formation
The Ovarian Cycle
Remember - one of the functions of
the female reproductive system is to
provide a suitable environment for
the development of offspring
The purpose of the menstrual cycle
is to carry out this function
The Ovarian
Cycle
The Ovarian
Cycle
The Ovarian Cycle
Fertilization and Development
Fertilization and Development
Fertilization and Development
Fertilization and Development
Fertilization and
Development