Hormonal Communication Flashcards Preview

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Flashcards in Hormonal Communication Deck (12):
1

Endocrine Glands

Secrete Hormones into the blood
Examples are adrenal, thyroid, thymus, pineal, pituitary, pancreas, testes, ovary

2

What are the two types of hormone?

Steroid - made of cholesterol and are water soluble so pass through membrane. Form hormone/receptor complex which inhibit/induce gene transcription

Non-steroid - made of protein
Bind to receptor on membrane
Trigger cascade reaction (secondary messenger)

3

How does a steroid hormone work?

Hormone pass through membrane
bind to receptor and form hormone/receptor complex
Complex attach to DNA which synthesise polypeptide
Polypeptide produce change

4

What are the two parts of Adrenal Gland called?

Medulla and cortex

5

Which hormone does medulla produce?

Adrenaline and noradrenaline

6

What hormones are produced by cortex?

Vital Hormone
Gylcocorticoids - regulate metabolism and blood pressure
Mineralcorticoids - aldosterone which control blood pressure by amount water and salt
Androgen - release male sex hormone

7

What does thymosin do?

Maturation of white blood cell

8

What hormone is released when blood glucose level is high?

Insulin

9

What hormones do the ovaries produce?

Oestrogen and Progesterone

10

What is the exocrine tissue called in pancreas?

Pancreatic Acini

11

What does the pancreatic acini do?

Produce enzyme and pancreatic fluid which is released into the duodenum

12

What is the endocrine gland in pancreas?

Islets of langerhan