Lp 64 Flashcards
Organ that produces & secretes specific product by exocytosis?
Gland
Which one has ducts endocrine or excytosis?
Endocrine: ductless
Exocytosis: have ducts
Secrete products into blood stream or lymphatic fluid?
Endocrine glands
2 categories of endocrine structures?
Glands
Glandular tissue
Glandular tissue, located w/in other organs:
Major
Minor
Hypothalamus
*Neuroendocrine gland
*neural fxns: integration of autonomic fxns
Pineal gland
*hangs from roof of 3rd ventricle
*secretes melatonin- regulates circadian rhythms
Pituitary gland
*In sella turicia (sphenoid bone)
*attaches to hypothalamus
Pituitary gland 2 types of hormones?
*tropic: activate other endocrine glands
*somatic: activate mechanisms in body cells
Hypothalamic neurons produce & secrete 2 kinds of hormones?
*somatic hormones: stored in posterior pituitary
*releasing & inhibiting hormones: excites or inhibits anterior pituitary gland
-located in anterior neck
-largest gland whose Fxn is entirely endocrine
Thyroid gland
2 types of thyroid gland cells?
-follicular cells: thyroid hormones
-parafollicular cells: calcitonin
-on posterior aspect of thyroid gland
-PTH maintains (Ca blood)
Parathyroid glands
-in thorax, deep to sternum
-critical role in maturation of T lymphocytes & cellular immunity
Thymus
-in abdomen, behind stomach
2 Fxn:
-exocrine: production & secretion of digestive enzymes
-endocrine: production & secretion of insulin & glucagon
Pancreas