Endocrine System Flashcards
0
Q
Exocrine glands…
A
- They have ducts
* They deliver their products directly to a specific site
1
Q
Endocrine glands are..
A
Ductless
Use the blood stream
Secrete hormones
2
Q
Important functions of hormones are….
A
- Regulate metabolic processes
- Help transport substances through membranes
- Help regulate water balance, electrolyte balance, and blood pressure
- Plays a role in reproduction, development and growth
3
Q
Steroid hormones…
A
- Sex hormones
* Adrenal cortex hormones
4
Q
• Non-steroid hormones
A
- Amines – formed from tyrosine amino acid
- Proteins – long chains of amino acids folded
- Peptides – short chains of amino acids
- Glycoproteins – proteins joined with carbohydrates
5
Q
Pituitary gland..
A
- Lies at the base of the brain in the sella turcica
- Consists of two distinct portions:
- Anterior pituitary (adenohypophysis)
- Posterior pituitary (neurohypophysis)
6
Q
Thyroid gland…
A
- It produces three hormones:
- T3 (thyroxine)
- T4 (triiodothyronine)
- Calcitonin
7
Q
Parathyroid gland…
A
Secretes PTH which • Regulates calcium and phosphate ion concentrations in the blood
• Promotes calcium absorption in intestines through metabolism of vitamin D
• Elevated blood calcium ion concentration, parathyroid secretion is inhibited – low blood calcium ion level, parathyroid hormone is secreted
8
Q
Adrenal glands…
A
Adrenal cortex and adrenal medulla and is closely related to the kidneys
9
Q
Pancreas secretes what hormones?
A
- Alpha cells secrete glucagon
- Beta cells insulin
- Delta cells secrete somatostatin
