The Endocrine System Flashcards
1
Q
Endocrinology
A
the study of hormones, their receptors and the intracellular signalling pathways they invoke
2
Q
Hormone
A
- chemical messenger that is released in one tissue and transported in the bloodstream to reach specific cells in other tissues.
- produced by specific cells
- Each hormone has ‘target cells’, specific cells that respond to its presence
- Hormones alter the way a cell operates by changing the: types, quantities, or activities of important enzymes and structural proteins
3
Q
Target Cells
A
possess the receptors needed to bind and ‘read’ the hormonal message
4
Q
Thyroid gland hormones
A
Thyroxine (T4)
Triodothyronine (T3)
Calcitonin (CT)
5
Q
Hypothalamus Hormones
A
Production of ADH, oxytocin, and regulatory hormones
6
Q
Pituitary Hormones
A
Anterior lob:
- ACTH, TSH, GH, PRL, FSH, LH and MSH
Posterior lobe:
- Release of oxytocin and ADH
7
Q
Parathyroid Glands Hormones
A
on posterior surface of thyroid gland
Parathyroid hormone (PTH)
8
Q
Pancreatic Islets
A
Insulin
Glucagon
9
Q
A
