• Second major control system of the body. Vital towards maintenance of homeostasis. • Functions in integration of body cells by working with the nervous system. • Acts more slowly than the nervous system by using chemical messengers called hormones • Hormones are secreted into the blood. They travel through the blood to reach the cells of a specific organ or organs. These cells are called the hormone's target cells.
a group of cells or an organ that produces a secretion for use in the body or surroundings
Long-distance chemical messengers that travel through either the blood or lymph
The cells within an organ that respond to a particular hormone.
What are the 2 classes of Hormones called?
Amino Acid Based & Steroid
•The major controller of endocrine glands •Coordinates the autonomic nervous system and anterior pituitary •Controls homeostatic systems (body temperature control, thirst, hunger, etc) •Involved in sleep and emotion control
Pituitary Gland (Hypophysis) is made up of two glands. What are they?
Anterior Pituitary and Posterior Pituitary
Controls the activity of many other endocrine glands Sometimes called the mater endocrine gland
Not technically an endocrine gland because it does not synthesize its own hormones Acts as a storage unit for 2 neurohormones
What are the 3 glands found in the Endocrine system?
Pineal, Thyroid, Parathyroid Gland Thymus, Adrenal Gland, Pancreas, The Gonads
•Produces melatonin Peaks at night making us drowsy Lowest at noon
•Regulates growth and development via metabolic rate
•Regulates the body's calcium levels
•Involved in the development of T lymphocytes and the immune response •Begins to atrophy at puberty & is inconspicuous by old age
•Release a hormone mix of epinephrine and norepinephrine •The hormones released act with the sympathetic nervous to produce the fight or flight response
•Functions as an endocrine gland and an exocrine gland •Produces digestive enzymes •Also produces insulin and glucagon involved in blood sugar level regulation
•The endocrine and exocrine functions of the gonads begin at the onset of puberty
Female gonads Produces the steroid hormones estrogen and progesterone These hormones promote the development of the female reproductive organs, secondary sex characteristics, and regulate the menstrual cycl
Male gonads Produce testosterone This hormone promotes the development of the male reproductive organs, secondary sex characteristics, sperm production, and sex drive