Hormones Flashcards
Steroid Hormones
lipid soluble, diffuse easily through cell membranes; from cholesterol
Non-Steroid Hormones
non-lipid soluble, cannot easily diffuse through cell membranes
Endocrine Organs
- Hypothalamus
- Pituitary Gland
- Thyroid and Parathyroid glands
- Adrenal Gland
- Pancreas
- Ovaries
- Testes
Mechanisms of Hormone Transport
- membrane transport
- stimulation of DNA in the nucleus
- second messengers
Location of Pituitary Gland
base of the brain; attached to the hypothalamus
Hormones Secreted by Anterior Pituitary Gland
- adrenocorticotropic (ACTH)
- follicle stimulating hormone (FSH)
- luteinizing hormone (LH)
- thyroid stimulating hormone (TSH)
- growth hormone (GH)
- prolactin
Hormones Secreted by Posterior Lobe
- antidiuretic hormone
- oxytocin
Hormones secreted by Thyroid Gland
- triiodothyronine (T3)
- thyroxine (T4)
Hormones Secreted by Adrenal Medulla
catecholamines; epinephrine and norepinephrine
Hormones Secreted by Adrenal Cortex
steroid hormones; aldosterone, cortisol, androgens, estrogens
Hormones Secreted by Pancreas
- insulin
- glucagon
Slow Acting Hormones
- thyroxine
- cortisol
- GH
Fast Acting Hormones
- Epinephrine
- Norepinephrine
- Insulin
- Glucagon
Hormone level in plasma is dependent on…
secretion rate, metabolism rate, # transport proteins, plasma volume changes
Factors effecting blood hormones
ions, plasma substrates, neurotransmitters, other hormones
