endocrine system SQ's Flashcards
(37 cards)
Nervous impulses (AP’s) can cause
endocrine secretion
What would bind to receptors on cell membrane but NOT to receptors in the cytoplasm or nucleus of cell?
- Peptide Hormones
2. Lipid insoluble hormones
The releasing and inhibiting hormones, which control secretion of the _________ pituitary, come from the __________.
Anterior, Hypothalamus
What hormones are secreted from the anterior pituitary?
- thyroid stimulating hormone
- follicle-stimulating hormone
- growth hormone
- Prolactin
What pituitary is glandular tissue?
Anterior
What pituitary is nervous tissue?
Posterior
Growth hormone causes an increase in
- Blood glucose
2. protein synthesis
Thyroid hormones:
- increased basal metabolic rate
- increase responsiveness to epinephrine and norepinephrine
- are stored as part of the thryroglobulin molecule in the colloid of the thyroid gland or follicles
- contain iodine
- t3 has more activity or is more potent than T4
- are NOT tropic hormones
- increase oxygen consumption and heat production
- iodine is necessary in the diet for hormones to be synthesized
- t4 can be converted to T3 in the tissues
- thyroglobulin contains thyroid hormones
Complete removal of the parathyroid glands but no one other glands will cause…
Spontaneous depolarizations
Activation of vitamin D in the kidney is stimulated by
Parathyroid gland
What effect does parathyroid hormone have on calcium reabsorption and phosphate ion excretion in the kidney?
INCREASES both
The adrenal cortex secretes
Sex hormones
What is true about cortisol?
- is a glucocoticoid
- has anti-insulin effects (ex. blood glucose)
- used at high concentrations (pharmacological level) has an anti-inflammatory effect
- important in adaption to stress
- increases blood glucose, fatty acids, & amino acids
Hypophysiotropic hormones (or releasing & inhibiting hormones)
- are secreted by the hypothalamus
2. Control secretion of the anterior pituitary
What is secreted from the posterior pituitary (neurohypopysis)?
- Ocytocin
2. ADH
Concerning Thyroid hormones:
- increase oxygen consumption and heat production
- iodine is necessary in the diet for hormones to be synthesized
- t4 can be converted to T3 in the tissues
- thyroglobulin contains thyroid hormones
Hormones can cause
- decreased synthesis of a protein
- a change in the activity of proteins already present in the cell
- increased synthesis of proteins
Increase cortisol decreases
- CRH secretion
2. ACTH secretion
The target cells of tropic hormones are?
Endocrine gland cells
What are the effects of a parathyroid hormone?
- increase calcium reabsorption in the kidney
- increases phosphate ion excretion
- stimulates activation of vitamin D in the kidneys
- increases blood calcium levels
If the cell does not have a receptor for hormone…
it CANNOT not respond to the hormone
What hormones bind to receptors inside the cell in the cytoplasm or nucleus and cause protein synthesis?
Lipid soluble hormones
The posterior pituitary secretes…
ADH
What develops as a downward growth of the hypothalamus?
The posterior pituitary