Endocrine System Flashcards
Target Organ
Any cell with 1 or more receptors for a particular hormone
Hormone
Regulating substance secreted by an endocrine gland
Steroid hormones are synthesized from
Cholesterol
Nervous system
Fast response
Short lived
Electrical messengers
Skeletal muscles primarily effected
Endocrine System
Slow response
Effects last longer
Chemical messengers
Affects everything via glands
Nervous system and endocrine system similarities
Both regulatory systems to keep homeostasis.
Endocrine
Ductless
Direct to blood stream
Hormones
Exocrine
Outside body
Ducts to membrane/epithelial surface
No hormonal
Mixed gland
Pancreas
Endocrine - insulin to blood stream
Exocrine - digestive enzymes
Pituitary gland aka
Hypophysis Cerebi
Anterior Pituatary
Adrenohyphosis - secretes most hormones
TSH ACTH FSH LH KSH PL GH
Posterior Pituitary
Neurohypohysis - - holding tank, secretes AD and oxytocin
Tropic Hormone
Causes another endocrine gland to secrete its hormone
Breast feeding Hormones
Prolactin - milk production
Oxytocin - milk let down
Diabetes Insipidus
Deficiency ADH
Excessive thirst and excessive urination
Parathormone Calcitonine
Antagonists that control blood calcium levels
Ca2+ increase 20% _______ is released to keep calcium from coming from bones.
Calcitonine
Acromegaly
Hyper secretion GH after growth phase
Large hands, feet, protruding jaw