Endocrine system

Which of these communication types occurs utilising extracellular fluid

Which of these are features of endocrine glands

Secrete hormones onto target organs

Ductless

Secrete hormones into synapses

Have ducts

What type of hormones are catecholamines

AA derivatives

Peptide

Lipid derivatives

Thyroid hormones are amino acid derivatives that are

Lipid soluble

Water soluble

Eicosanoids are water soluble

AA derivatives

Peptide hormones

Lipid derivatives

Free hormones are functional in the bloodstream for less than

1 minute

10 minutes

1 hour

10 hours

Which of these are examples of hormones that would bind to transport proteins (which makes them active for longer)

Steroids

Norepinephrine

Adrenaline

Thyroid hormones

G protein activation (by water soluble hormones) may cause the conversion of ATP to cAMP by activating

Hormone-receptor complexes

DNA

Adenylate cyclase

Receptors

Which of these are functions of the hypothalamus

Sympathetic output to adrenal cortex

Sympathetic output to adrenal medulla

Nervous stimulation of posterior pituitary gland

Production of regulatory hormones to control anterior pituitary

What separates the bodies of the anterior and posterior pituitary gland

Pars distalis

Pars intermedia

Pars tuberalis

Falx cerebri

In the hypophyseal portal system, what produces regulatory factors that are then carried by portal veins to the adenohypophysis

Posterior pituitary

Median eminence

Infundibulum

Isthmus

Thyroxine and triiodothyronine work to

Regulate blood volume

Increase anabolism

Increase production of sodium potassium ATPase

Increase bone reformation

Melatonin is produced by

Anterior pituitary

Hypothalamus

Posterior pituitary

Pinealocytes

Thyroid follicles contain colloid and act as a site for the addition of

Colloid and thyroxine

Iodine and thyroid hormones

Oxytocin and thyroxine

Adrenaline and noradrenaline

C cells produce calcitonin which acts to

Increase serum calcium

Decrease serum calcium

Parathyroid hormone is antagonistic to calcitonin, and is produced by

C cells

Infundibulum

Chief cells

PP cells

The adrenal medulla produces

Catecholamines

Androgens

Glucocorticoids

Mineralocorticoids

Which are larger

Peptide hormones

AA derivative hormones

Mineralocorticoids, such as aldosterone, are produced in the

Adrenal medulla

Zona reticularis

Zona fasciculata

Zona glomerulosa

Which would you expect to be produced in the zona fasciculata

Adrenaline

Steroids

Cortisol

Aldosterone

If one hormone could be described as a prerequisite for the other to act, this is

Antagonistic

Synergistic

Permissive

Integrative

Natriuretic peptides (produced by the heart) are antagonistic to

Aldosterone

Calcitonin

FSH

Oestrogen

Thymosin acts to regulate lymphocyte development, and is produced by the

Thyroid

Thymus

Ovaries

Adrenal gland

Leptin is produced by adipocytes and is an

Appetite stimulant

Appetite suppressant

The kidneys produce

EPO

Renin

Calcitrol

Calcitonin

Which of the phases of GAS are glucocorticoids most associated with

Alarm

Resistance

Exhaustion

Androgens are produced in the

Adrenal medulla

Zona reticularis

Zona fasciculata

Zona glomerulosa

The increase in hormone receptor abundance with hormone presence is known as

Up regulation

Down regulation

Renin is produced by juxtaglomerular cells and is involved in a pathway with

ADH

Angiotensins

Aldosterone

Natriuretic peptides

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