Hormones and the Endocrine System pp pt5 Flashcards
Leptin is secreted by? involved in?
Secreted by adipose tissue
Involved in feedback control of appetite
Erythropoietin is produced by? and simulates?
Produced by the kidneys
Stimulates production of red blood cells
Prostaglandins are? and not distributed in__
Local hormones
Not distributed in blood
Endocrinology is?
the study of medicine that relates to the endocrine system
An endocrinologist is?
a doctor that deals with diseases that are caused by problems with hormones (overproduction, underproduction, mutations of targets, etc).
Endocrine system consists of _______ that release _____ directly into the ________.
glands,hormones,bloodstream
The target of hormones are _____ to where the glands are located.
distant,
Cells that are affected by hormones are ________
target cells
There are 2 categories of hormones: ______ and ______
peptide and steroid
Major function of the endocrine system is _____
homeostasis
Purely endocrine organs? (5)
Pituitary gland Pineal gland Thyroid gland Parathyroid glands Adrenal: 2 glands-Cortex &Medulla
Endocrine cells in other organs? (4)
Pancreas
Thymus
Gonads
Hypothalamus
in response to changing levels of ions or nutrients in the blood
humoral
Neural
stimulation by nerves
stimulation received from other hormones
Hormonal
Examples of stimulus
You hear a loud noise
A large dog runs toward you, growling and barking
You eat a large candy bar
You have not eaten in six hours
You have strep throat
negative feedback?
when enough hormone is in the body, the body stops producing the hormone until it is needed again.
positive feedback?
stimulus causes increased release of hormone
examples of positive feedback?
The stretching of the uterus is a stimulus for the pituitary gland to release the hormone oxytocin which acts on the uterus causing contractions.,
Contractions causing more stretching of uterus, and more release of oxytocine, etc. until delivery
PITUITARY GLAND
Posterior Lobe
Antidiuretic hormone (ADH) Oxytocin
PITUITARY GLAND
Anterior Lobe
Adrenocorticotropic (ACTH) Growth hormone (GH) Thyroid-stimulating hormone (TSH) Follicle-stimulating hormone (FSH) Luteinizing hormone (LH) Prolactin (PRL)
