A&P 3

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Hormones

Chemical Messengers
What are the 3 types of hormones?
- Amines
- Peptides/proteins
- Steroids
The amine hormones are derived from what amino acid?

tyrosine
Where are the amines released from?
- Thyroid
- Adrenal gland
- Hypothalamus
GPCR

G-protein coupled receptors
what type of receptors are the amines?

cell surface receptors such as GPCR and nuclear for TH
What is the largest class of hormones?

Peptides & Proteins
how are peptides and proteins usually produced?

as preprohormones
What are steroid hormones derived from?

Cholesterol
Where are steroid hormones typically released from?

the adrenal glands and gonads
Steroid hormones act at nuclear receptors to do what?

Alter gene activity
What does the adrenal cortex secrete?
- Cortisol
- Androgens
- Aldosterone
What does the Adrenal Medulla Secrete?
- Epinephrine
- Norepinephrine
What does the Hypothalamus secrete?
- CRH
- TRH
- GHRH
- SS
CRH

Corticotropin-releasing hormone
TRH

Thyrotropin-releasing hormone
GHRH

Growth hormone releasing hormone
SS

Somatostatin
What do the kidneys secrete?

1,25-dihydroxyvitamin D
What does the pancreas secrete?

Insulin
What do the parathyroids secrete?

PTH
PTH

Parathyroid hormone
What does the anterior pituitary gland secrete?
- GH
- TSH
- ACTH
GH

Growth hormone
TSH

Thyroid stimulating hormone
ACTH

Adrenocorticotropic hormone
What does the posterior pituitary secrete?
- Oxytocin
- ADH
ADH

Antidiuretic hormone

(Vasopressin)
What does the Thyroid secrete?
- T₄
- T₃
- Calcitonin
T₄

Thyroxine
T₃

triiodothyronine
What factors regulate hormones?

Circulating hormones, whether bound or unbound.

Not all pathways apply to all hormones
What makes up a hormone-protein complex?

Free Hormone + Binding Protien
What is a common binding protein for hormones and drugs?

Albumin
Tropic hormone

a hormone that stimulates secretion of another

Author

Anonymous

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Card Set

A&P 3

Description

A&P exam 3

Updated

2010-09-29T22:49:11Z

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